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Publication numberCN1639893 A
Publication typeApplication
Application numberCN 03804752
PCT numberPCT/US2003/004114
Publication date13 Jul 2005
Filing date11 Feb 2003
Priority date28 Feb 2002
Also published asCN100407483C, DE60316260D1, DE60316260T2, EP1481434A2, EP1481434B1, US7566350, US7744659, US7749288, US20030162099, US20070000121, US20090265920, US20090265921, WO2003075373A2, WO2003075373A3
Publication number03804752.7, CN 03804752, CN 1639893 A, CN 1639893A, CN-A-1639893, CN03804752, CN03804752.7, CN1639893 A, CN1639893A, PCT/2003/4114, PCT/US/2003/004114, PCT/US/2003/04114, PCT/US/3/004114, PCT/US/3/04114, PCT/US2003/004114, PCT/US2003/04114, PCT/US2003004114, PCT/US200304114, PCT/US3/004114, PCT/US3/04114, PCT/US3004114, PCT/US304114
InventorsWL鲍登, NN伊萨埃夫, M波津
Applicant吉莱特公司
Export CitationBiBTeX, EndNote, RefMan
External Links: SIPO, Espacenet
非水电化学电池 Non-aqueous electrochemical cell translated from Chinese
CN 1639893 A
Abstract  translated from Chinese
一种锂电化学电池,它包括:含包括碳酸亚丙酯(PC)和二甲氧基乙烷(DME)的溶剂混合物;以及盐混合物的电解质。 A lithium electrochemical cell, comprising: comprising propylene carbonate containing (PC) and dimethoxyethane (DME) solvent mixture; and an electrolyte salt mixtures. 该盐混合物包括三氟甲磺酸锂(LiTFS)和三氟甲磺酰基亚氨基锂(LiTFSI),和电池含有小于1500ppm重量的钠。 The salt mixture comprises lithium trifluoromethanesulfonate (LiTFS) and lithium trifluoromethanesulfonyl imino (LiTFSI), and a battery containing less than 1500ppm by weight of sodium. 溶剂混合物可进一步包括碳酸亚乙酯(EC)。 Solvent mixtures may further include ethylene carbonate (EC).
Claims(17)  translated from Chinese
1.一种锂电化学电池,它包括:一种电解质,所述电解质包括:一种溶剂混合物,所述溶剂混合物包括:碳酸亚丙酯和二甲氧基乙烷;和一种盐混合物,所述盐混合物包括:三氟甲磺酸锂和三氟甲磺酰基亚氨基锂,其中电池含有小于1500ppm重量的钠。 A lithium electrochemical cell comprising: an electrolyte, the electrolyte comprising: a solvent mixture, the solvent mixture comprises: propylene carbonate and dimethoxyethane; and a salt mixture, the said salt mixture comprising: lithium trifluoromethanesulfonate and lithium trifluoromethanesulfonyl imino, wherein the cell contains less than 1500ppm by weight of sodium.
2.权利要求1的电池,其中电池含有小于1200ppm重量的钠。 The battery of claim 1, wherein the battery contains sodium less than 1200ppm by weight.
3.权利要求1的电池,其中电池含有小于1000ppm重量的钠。 The battery of claim 1, wherein the battery containing less than 1000ppm by weight of sodium.
4.权利要求1的电池,其中电池含有小于800ppm重量的钠。 The battery of claim 1, wherein the cell contains less than 800ppm by weight of sodium.
5.权利要求1的电池,其中电池含有小于600ppm重量的钠。 The battery of claim 1, wherein the cell contains less than 600ppm by weight of sodium.
6.权利要求1的电池,其中溶剂混合物包括:40-80重量%的二甲氧基乙烷;和20-60重量%的碳酸亚丙酯;和盐混合物在溶剂混合物内的浓度为0.4M至1.2M。 The battery of claim 1, wherein the solvent mixture comprises: 40-80% by weight dimethoxyethane; and 20-60% by weight of propylene carbonate; and salt concentration in the solvent mixture is a mixture of 0.4M to 1.2M.
7.权利要求6的电池,其中溶剂混合物包括:50-75重量%的二甲氧基乙烷;和25-50重量%的碳酸亚丙酯。 The battery of claim 6, wherein the solvent mixture comprises: 50-75% by weight dimethoxyethane; and 25-50% by weight of propylene carbonate.
8.一种锂电化学电池,它包括:一种电解质,所述电解质包括:一种溶剂混合物,所述溶剂混合物包括:碳酸亚乙酯、碳酸亚丙酯和二甲氧基乙烷;和一种盐混合物,所述盐混合物包括:三氟甲磺酸锂和三氟甲磺酰基亚氨基锂,其中电池含有小于1500ppm重量的钠。 A lithium electrochemical cell comprising: an electrolyte, the electrolyte comprising: a solvent mixture, the solvent mixture comprises: ethylene carbonate, propylene carbonate and dimethoxyethane; and a a mixture of salts, the salt mixture comprising: lithium trifluoromethanesulfonate and lithium trifluoromethanesulfonyl imino, wherein the battery contains sodium less than 1500ppm by weight.
9.权利要求8的电池,其中电池含有小于1200ppm重量的钠。 9. The battery of claim 8, wherein the cell contains less than 1200ppm by weight of sodium.
10.权利要求8的电池,其中电池含有小于1000ppm重量的钠。 10. The battery of claim 8, wherein the cell contains less than 1000ppm by weight of sodium.
11.权利要求8的电池,其中电池含有小于800ppm重量的钠。 11. The battery of claim 8, wherein the cell contains less than 800ppm by weight of sodium.
12.权利要求8的电池,其中电池含有小于600ppm重量的钠。 12. The battery of claim 8, wherein the cell contains less than 600ppm by weight of sodium.
13.权利要求8的电池,其中溶剂混合物包括:小于30重量%的碳酸亚乙酯;40-85重量%的二甲氧基乙烷;和盐混合物在溶剂混合物内的浓度为0.4M至1.2M。 13. The battery of claim 8, wherein the solvent mixture comprises: less than 30% by weight of ethylene carbonate; 40-85% by weight dimethoxyethane; and a salt concentration in the solvent mixture is a mixture of 0.4M to 1.2 M.
14.权利要求13的电池,其中溶剂混合物包括:10-20重量%的碳酸亚乙酯;50-70重量%的二甲氧基乙烷。 14. The battery of claim 13, wherein the solvent mixture comprises: 10-20% by weight of ethylene carbonate; 50-70% by weight of dimethoxyethane.
15.权利要求14的电池,包括小于500ppm重量的钠。 14 battery, comprising less than 500ppm by weight of sodium of claim.
16.权利要求13的电池,其中溶剂混合物包括:5-15重量%的碳酸亚乙酯;70-80重量%的二甲氧基乙烷;和10-20重量%的碳酸亚丙酯。 The battery of claim 13, wherein the solvent mixture comprises: 5-15% by weight of ethylene carbonate; 70-80% by weight dimethoxyethane; and 10-20% by weight of propylene carbonate.
17.权利要求16的电池,包括小于500ppm重量的钠。 16 battery, comprising less than 500ppm by weight of sodium of claim.
Description  translated from Chinese
非水电化学电池 Non-aqueous electrochemical cell

本发明涉及非水电化学电池。 The present invention relates to a non-aqueous electrochemical cell.

电池是常用的电能源。 Cells are commonly used electrical energy. 电池含有负电极,典型地称为阳极,和正电极,典型地称为阴极。 Battery contains a negative electrode, typically called the anode, and a positive electrode, typically called the cathode. 阳极含有可被氧化的活性材料;阴极含有或消耗可被还原的活性材料。 Anode contains an active material that can be oxidized; the cathode contains or consumes an active material that can be reduced. 阳极活性材料能还原阴极活性材料。 An anode active material capable of reducing the cathode active material.

当电池在设备内用作电能源时,使阳极与阴极电接触,从而允许电子流过该设备并允许各自的氧化与还原反应发生,以提供电能。 When the battery in the device as electrical energy, to make electrical contact with the anode and cathode, allowing electrons to flow through the device and allows the respective oxidation and reduction reactions, to provide electrical power. 与阳极和阴极接触的电解质含有经隔离件(separator)在电极之间流动的离子,以维持放电过程中整个电池内的电荷平衡。 An electrolyte in contact with the anode and the cathode containing a spacer (separator) ion flow between the electrodes to maintain charge balance throughout the battery inside discharge.

对于电池来说,希望在它们被生产和/或在它们已被长时间地储存之后,具有良好的电容。 For batteries, it is desirable that they are produced and / or after they have been stored for a long time, has a good capacitor.

本发明涉及非水电化学电池。 The present invention relates to a non-aqueous electrochemical cell.

一方面,本发明的特征在于锂电化学电池,它包括含碳酸亚丙酯和二甲氧基乙烷的溶剂混合物以及含三氟甲磺酸锂和三氟甲磺酰基亚氨基锂的盐混合物的电解质。 In one aspect, the present invention is characterized in that the lithium electrochemical cell comprising a solvent mixture containing propylene carbonate and dimethoxyethane, and a salt mixture comprising lithium trifluoromethanesulfonate and lithium trifluoromethanesulfonyl imino the an electrolyte. 该电池含有小于1500ppm重量的钠。 The battery contains less than 1500ppm by weight of sodium.

本发明的实施方案可包括一种或多种下述特征。 Embodiments of the invention may include one or more of the following features. 电池含有小于1200ppm,例如小于1000ppm、小于800ppm,或小于600ppm重量的钠。 The battery contains less than 1200ppm, such as less than 1000ppm, less than 800ppm, 600ppm or less than the weight of sodium. 电池包括40-80%,例如50-75重量%的二甲氧基乙烷,和20-60%,例如25-50重量%的碳酸亚丙酯的溶剂混合物,和盐混合物在溶剂混合物内的浓度为0.4M至1.2M。 Battery comprising 40-80%, e.g., 50-75% by weight of dimethoxyethane, and 20 to 60%, e.g., 25-50% by weight of a solvent mixture of propylene carbonate, and the salt mixture in a solvent mixture of concentration of 0.4M to 1.2M.

另一方面,本发明的特征在于锂电化学电池,它包括含碳酸亚乙酯、碳酸亚丙酯和二甲氧基乙烷的溶剂混合物以及含三氟甲磺酸锂和三氟甲磺酰基亚氨基锂的盐混合物的电解质。 On the other hand, the present invention is characterized in that the lithium electrochemical cell comprising ethylene carbonate, propylene carbonate and dimethoxy ethane and a solvent mixture containing lithium triflate trifluoromethanesulfonyl sulfoxide containing electrolyte lithium amide salt mixture. 该电池含有小于1500ppm,例如小于1200ppm,小于1000ppm、小于800ppm,或小于600ppm重量的钠。 The battery contains less than 1500ppm, for example less than 1200ppm, less than 1000ppm, less than 800ppm, 600ppm or less than the weight of sodium.

本发明的实施方案可包括一种或多种下述特征。 Embodiments of the invention may include one or more of the following features. 电池包括小于30%,例如10-20重量%的碳酸亚乙酯,40-85%,例如50-70重量%的二甲氧基乙烷,和盐混合物在溶剂混合物内的浓度为0.4M至1.2M。 Cell comprises less than 30%, e.g., 10-20% by weight of ethylene carbonate, 40-85%, e.g., 50-70% by weight of dimethoxyethane, and a mixture of salt concentration in the solvent mixture is 0.4M to 1.2M. 电池包括含5-15重量%的碳酸亚乙酯,70-80重量%的二甲氧基乙烷,和10-20重量%的碳酸亚丙酯的溶剂混合物。 Battery comprising ethylene carbonate containing 5-15% by weight, and 70-80% by weight of dimethoxyethane, and 10-20% by weight of a solvent mixture of propylene carbonate. 该电池含有小于500ppm重量的钠。 The battery contains less than 500ppm by weight of sodium.

另一方面,本发明的特征在于锂电化学电池用的电解质,它基本上由含碳酸亚丙酯和二甲氧基乙烷的溶剂混合物以及含三氟甲磺酸锂和三氟甲磺酰基亚氨基锂的盐混合物组成。 On the other hand, the present invention is characterized in that an electrolyte lithium electrochemical cell, which consists essentially of a solvent containing propylene carbonate and dimethoxyethane and mixtures thereof containing lithium triflate trifluoromethanesulfonyl sulfoxide and salt mixture composed of lithium amide. 该电解质可在电池,例如在含有小于1500ppm,例如小于1000ppm,或小于500ppm重量钠的电池中使用。 The electrolytic cell may, for example, containing less than 1500ppm, for example less than 1000ppm, or less than 500ppm by weight of sodium used in batteries.

电解质混合物可包括含40-80%,例如50-75重量%的二甲氧基乙烷,和20-60%,例如25-50重量%的碳酸亚丙酯的溶剂混合物,和盐混合物在溶剂混合物内的浓度为0.4M至1.2M。 The mixture containing the electrolyte may comprise 40-80%, e.g., 50-75% by weight of dimethoxyethane, and 20 to 60%, e.g., 25-50% by weight of a solvent mixture of propylene carbonate, and the salt in a solvent mixture of concentration within the mixture of 0.4M to 1.2M.

另一方面,本发明的特征在于锂电化学电池用的电解质,它基本上由含碳酸亚乙酯、碳酸亚丙酯和二甲氧基乙烷的溶剂混合物以及含三氟甲磺酸锂和三氟甲磺酰基亚氨基锂的盐混合物组成。 On the other hand, the present invention is characterized in that an electrolyte lithium electrochemical cell, which consists essentially containing ethylene carbonate, propylene carbonate, and a solvent mixture of dimethoxyethane and lithium triflate and tri-containing trifluoromethanesulfonyl imino lithium salt mixture composition. 该电解质可在电池,例如在含有小于1500ppm,例如小于1000ppm,或小于500ppm重量钠的电池中使用。 The electrolytic cell may, for example, containing less than 1500ppm, for example less than 1000ppm, or less than 500ppm by weight of sodium used in batteries.

电解质可包括含小于30%,例如10-20重量%的碳酸亚乙酯,和40-85%,例如50-70重量%的二甲氧基乙烷的溶剂混合物,和盐混合物在溶剂混合物内的浓度为0.4M至1.2M。 The electrolyte may include containing less than 30%, for example 10-20% by weight of ethylene carbonate, and 40-85%, e.g., 50-70% by weight of a solvent mixture of dimethoxyethane, and the salt mixture in a solvent mixture a concentration of 0.4M to 1.2M.

电解质可包括含5-15重量%的碳酸亚乙酯,70-80重量%的二甲氧基乙烷和10-20重量%的碳酸亚丙酯的溶剂混合物。 The electrolyte can include ethylene carbonate containing 5-15% by weight, 70-80% by weight of a solvent mixture of dimethoxyethane and 10-20% by weight of propylene carbonate.

实施方案可具有一种或多种下述优点。 Embodiment may have one or more of the following advantages. 电池在生产和/或在长时间的储存之后,具有良好的电容。 Battery in the production and / or after prolonged storage, a good capacitor.

根据本发明的优选实施方案的说明以及根据权利要求,本发明的其它特征和优点将变得显而易见。 According to description of the preferred embodiment of the present invention and from the claims Other features and advantages of the invention will become apparent.

附图的说明图1是非水电化学电池的截面视图。 1 of the accompanying drawings illustrating a non-aqueous electrochemical cell cross-sectional view.

参考图1,电化学电池10包括与负集电器(current collector)14电连接的阳极12、与正集电器18电连接的阴极16、隔离件20和电解质。 Referring to Figure 1, the electrochemical cell 10 includes a negative current collector (current collector) 12 electrically connected to the anode 14, the positive collector 18 electrically connected to the electrical cathode 16, separator 20 and an electrolyte. 阳极12、阴极16、隔离件20和电解质容纳在壳体22内。 Anode 12, cathode 16, separator 20 and an electrolyte 22 accommodated in the housing. 电解质溶液包括溶剂混合物和至少一种部分溶于该溶剂混合物内的盐。 An electrolyte solution comprising a salt of the solvent mixture within the at least one part of a solvent mixture and dissolved.

电解质可以是液体、固体或凝胶(聚合物)形式。 The electrolyte may be liquid, solid or gel (polymer) form. 电解质可含有有机溶剂如碳酸亚丙酯(PC)、碳酸亚乙酯(EC)、二甲氧基乙烷(DME)、二噁烷(DO)、四氢呋喃(THF)、乙腈(CH3CN)、γ-丁内酯、碳酸二乙酯(DEC)、碳酸二甲酯(DMC)、碳酸甲乙酯(EMC)、二甲亚砜(DMSO)、乙酸甲酯(MA)、甲酸甲酯(MF)、环丁砜或其组合。 The electrolyte can contain an organic solvent such as propylene carbonate (PC), ethylene carbonate (EC), dimethoxyethane (DME), dioxane (DO), tetrahydrofuran (THF), acetonitrile (CH3CN), γ - butyrolactone, diethyl carbonate (DEC), dimethyl carbonate (DMC), ethyl methyl carbonate (EMC), dimethyl sulfoxide (DMSO), methyl acetate (MA), methyl formate (MF) sulfolane, or combinations thereof. 电解质可或者含有无机溶剂如SO2或SOCl2。 Or electrolyte may contain an inorganic solvent such as SO2 or SOCl2. 可选择溶剂以提供具有物理和化学性能组合的混合物。 Alternatively the solvent to provide a mixture having a combination of physical and chemical properties. 例如,电解质可包括第一溶剂,如PC或EC(它为极性、反应性不活泼和/或高沸点的溶剂);和第二溶剂,如DME、THF或DMC(它为极性相对低、挥发、相对不粘稠和/或不反应的溶剂)。 For example, the electrolyte may comprise a first solvent, such as PC or EC (which is a polar, non-reactive inert and / or high boiling solvent); and a second solvent, such as DME, THF, or DMC (which is relatively low polarity , volatile, relatively non-sticky and / or non-reactive solvent).

电解质也可含有锂盐如三氟甲磺酸锂(LiTFS)或三氟甲磺酰基亚氨基锂(LiTFSI)或其组合。 An electrolyte containing a lithium salt may e.g. lithium trifluoromethanesulfonate (LiTFS) or lithium trifluoromethanesulfonyl imino (LiTFSI), or combinations thereof. 可包括的其余锂盐例举于美国专利No.5595841中,在此通过参考将其全文引入。 Remaining lithium salt may include exemplified in U.S. Patent No.5595841, which is hereby incorporated by reference in its entirety.

在一些实施方案中,电池10包括由具有DME和PC的溶剂混合物,以及LiTFS与LiTFSI的盐混合物形成的电解质。 In some embodiments, cell 10 includes an electrolyte having a solvent mixture of PC and DME, and a mixture of LiTFS and LiTFSI salts formed. 电池10可进一步具有低的钠浓度。 Battery 10 may further have a low sodium concentration. DME在溶剂混合物内的浓度范围可以是约30%-约85%。 You can DME concentration range in a solvent mixture is about 30% - about 85%. DME在溶剂混合物内的浓度可以等于或大于30%、35%、40%、45%、50%、55%、60%、65%、70%、75%或80%;和/或等于或小于85%、80%、75%、70%、65%、60%、55%、50%、45%、40%或35%。 DME concentration in the solvent mixture may be equal to or greater than 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75% or 80%; and / or equal to or less than the 85%, 80%, 75%, 70%, 65%, 60%, 55%, 50%, 45%, 40% or 35%. PC在溶剂混合物内的浓度可以等于100%减去DME的浓度。 PC concentration in the solvent mixture may be equal to 100 percent minus the concentration of DME. 例如,若DME在溶剂混合物内的浓度为75%,则PC在溶剂混合物内的浓度为25%。 For example, if the DME concentration in the solvent mixture is 75%, then the concentration of PC in the solvent mixture is 25%. 若DME在溶剂混合物内的浓度为50-75%,则PC在溶剂混合物内的浓度为25%-50%。 If the DME in the solvent mixture at a concentration of 50-75%, the PC in the solvent mixture at a concentration of 25% -50%.

对于LiTFS和LiTFSI的盐混合物来说,在溶剂混合物内盐的总浓度范围可以是约0.4M到约1.2M。 For LiTFS and salt mixture of LiTFSI, in the total concentration range of the solvent mixture of salts may be about 0.4M to about 1.2M. 在溶剂混合物内LiTFS和LiTFSI的总浓度可以等于或大于0.40M、0.45M、0.50M、0.55M、0.60M、0.65M、0.70M、0.75M、0.80M、0.85M、0.90M、0.95M、1.00M、1.05M、1.10M或1.15M;和/或等于或小于1.2M、1.15M、1.10M、1.05M、1.00M、0.95M、0.90M、0.85M、0.80M、0.75M、0.70M、0.65M、0.60M、0.55M、0.50M或0.45M。 The total concentration of the mixture in a solvent and LiTFSI LiTFS may be equal to or greater than 0.40M, 0.45M, 0.50M, 0.55M, 0.60M, 0.65M, 0.70M, 0.75M, 0.80M, 0.85M, 0.90M, 0.95M, 1.00M, 1.05M, 1.10M, or 1.15M; and / or equal to or less than 1.2M, 1.15M, 1.10M, 1.05M, 1.00M, 0.95M, 0.90M, 0.85M, 0.80M, 0.75M, 0.70M , 0.65M, 0.60M, 0.55M, 0.50M, or 0.45M. 在盐的总浓度中,LiTFS在溶剂混合物内的浓度可以等于或大于5%、10%、15%、20%、25%、30%、35%、40%、45%、50%、55%、60%、65%、70%、75%、80%、85%、90%或95%;和/或等于或小于95%、90%、85%、80%、75%、70%、65%、60%、55%、50%、45%、40%、35%、30%、25%、20%、15%、10%或5%。 The total concentration of salt, LiTFS concentration in the solvent mixture may be equal to or greater than 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55% , 60%, 65%, 70%, 75%, 80%, 85%, 90% or 95%; and / or equal to or less than 95%, 90%, 85%, 80%, 75%, 70%, 65 %, 60%, 55%, 50%, 45%, 40%, 35%, 30%, 25%, 20%, 15%, 10% or 5%. LiTFSI在溶剂混合物内的浓度可以等于100%减去LiTFS在溶剂混合物内的浓度。 LiTFSI concentration in the solvent mixture may be equal to 100 percent minus the concentration of LiTFS in the solvent mixture. 例如,若在溶剂混合物内盐的总浓度为0.5M,和LiTFS在溶剂混合物内的浓度为90%(即0.45M),则LiTFSI在溶剂混合物内的浓度为10%(即0.05M)。 For example, if the total concentration of salt within the solvent mixture is 0.5M, and the LiTFS concentration in the solvent mixture is 90% (i.e. 0.45M), then the LiTFSI concentration in the solvent mixture is 10% (i.e. 0.05M). 在实施方案中,也可将其它类型的盐加入到电解质中。 In embodiments, it may also be other types of salt is added to the electrolyte.

此处所述的钠浓度是指在电池10内的含量减去在壳体20和/或盖帽24内部的任何钠。 Sodium concentration herein refers to any sodium content in the battery 10 minus 20 and / or the interior of the housing cap 24. 例如,钠含量可以指电池10内的电解质和“胶卷(jelly roll)”。 For example, electrolytes and sodium content can refer to a "film (jelly roll)" battery 10 inside. 胶卷由阳极12、阴极16、集电器14和18、隔离件20和在电池10内使用的任何保护胶带形成。 Film from the anode 12, cathode 16, collector 14 and 18, the spacer 20 and any protective tape 10 is formed within the battery.

电池10内的钠浓度可以是约100ppm-1500ppm重量。 Sodium concentration within the cell 10 may be about 100ppm-1500ppm by weight. 钠的浓度可以等于或大于100、200、300、400、500、600、700、800、900、1000、1100、1200、1300或1400ppm重量;和/或等于或小于1500、1400、1300、1200、1100、1000、900、800、700、600、500、400、300、200或100ppm重量。 Sodium concentration can be equal to or greater than 1400ppm 100,200,300,400,500,600,700,800,900,1000,1100,1200,1300 or weight; and / or equal to or less than 1500,1400,1300,1200, 1100,1000,900,800,700,600,500,400,300,200 or 100ppm by weight. 一般地,可通过控制电池的制造来控制,例如最小化或减少电池10内的钠浓度。 Generally, the battery can be controlled by controlling the manufacturing, e.g., to minimize or reduce the sodium concentration within the cell 10. 例如,在其中于阴极16内使用电解二氧化锰(EMD)的实施方案中,可在用不含钠或具有降低的钠含量的试剂,如LiOH电沉积之后,洗涤和/或中和EMD。 For example, where the use of electrolytic manganese dioxide in the cathode 16 (EMD) embodiment, no sodium may be followed by a reduced sodium content or with a reagent such as LiOH electrodeposition, washing and / or neutralization EMD. 可用不含钠或仔细洗涤过的溶液清洗壳体20。 Available free of sodium or carefully washed solution to clean the casing 20. 一般地,可简单地规定电池10的其它组件,如阳极12和隔离件20,不含钠或含有降低的钠含量。 In general, other components may simply be a predetermined battery 10, such as anode 12 and separator 20, does not contain sodium or reduced sodium content.

可将其它材料加入到电解质混合物中。 Other materials may be added to the electrolyte mixture. 例如,在一些实施方案中,电池10包括由含EC、DME和PC的溶剂混合物,以及LiTFS和LiTFSI的盐混合物形成的电解质。 For example, in some embodiments, the battery 10 comprises a containing EC, DME and a solvent mixture of PC, and a salt mixture of LiTFS and LiTFSI electrolyte formed. EC在溶剂混合物内的浓度可以是约5%至30%。 EC concentration in the solvent mixture can be about 5-30%. EC在溶剂混合物内的浓度可以等于或大于5%、10%、15%、20%或25%;和/或等于或小于30%、25%、20%、15%或10%。 EC concentration in the solvent mixture may be equal to or greater than 5%, 10%, 15%, 20% or 25%; and / or equal to or less than 30%, 25%, 20%, 15% or 10%. DME在溶剂混合物内的浓度范围可以是约30%-约85%。 You can DME concentration range in a solvent mixture is about 30% - about 85%. DME在溶剂混合物内的浓度可以等于或大于30%、35%、40%、45%、50%、55%、60%、65%、70%、75%或80%;和/或等于或小于85%、80%、75%、70%、65%、60%、55%、50%、45%、40%或35%。 DME concentration in the solvent mixture may be equal to or greater than 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75% or 80%; and / or equal to or less than the 85%, 80%, 75%, 70%, 65%, 60%, 55%, 50%, 45%, 40% or 35%. PC在溶剂混合物内的浓度可以等于100%减去EC和DME的浓度。 PC concentration in the solvent mixture can be equal to 100% minus the concentration of EC and DME. 例如,若EC在溶剂混合物内的浓度为15%,和DME在溶剂混合物内的浓度为60%,则PC在溶剂混合物内的浓度为25%。 For example, if the EC concentration in the solvent mixture is 15%, and the concentration of DME in the solvent mixture is 60%, then the concentration of PC in the solvent mixture is 25%. EC∶DME∶PC溶剂混合物的实例是14∶62∶24和10∶75∶15重量的溶剂混合物。 Examples EC:DME:PC solvent mixture is a solvent mixture of 14:62:24 and 10:75:15 weight.

在电解质内LiTFS和LiTFSI的浓度,例如0.4-1.2M通常可类似于此处所述的那些。 LiTFS in the electrolyte concentration and LiTFSI, such 0.4-1.2M generally similar to those described herein. 在实施方案中,可将其它类型的盐加入到电解质中。 In embodiments, other types of salts may be added to the electrolyte.

在电池10内的钠浓度,例如100-1500ppm重量通常可类似于此处所述的那些。 Sodium concentration in cell 10, e.g. 100-1500ppm weight generally similar to those described herein. 在不希望受到理论束缚的情况下,认为当EC浓度增加时,钠的浓度可增加,且基本上没有负面影响电池10。 Without wishing to be bound by theory, that the EC when the concentration increases, the concentration of sodium may increase, and virtually no negative impact on the battery 10. 因此,在实施方案中,在具有EC的电池10内,钠的浓度可以是约100ppm-3000ppm重量。 Accordingly, in the embodiment, in the battery having the EC 10, the concentration of sodium may be about 100ppm-3000ppm by weight. 钠的浓度可以等于或大于100、200、300、400、500、600、700、800、900、1000、1100、1200、1300、1400、1600、1800、1900、2100、2300、2500、2700或2900ppm重量;和/或等于或小于2900、2700、2500、2300、2100、1900、1800、1600、1500、1400、1300、1200、1100、1000、900、800、700、600、500、400、300、200或100ppm重量。 Sodium concentration can be equal to or greater than 100,200,300,400,500,600,700,800,900,1000,1100,1200,1300,1400,1600,1800,1900,2100,2300,2500,2700 or 2900ppm weight; and / or equal to or less than 2900,2700,2500,2300,2100,1900,1800,1600,1500,1400,1300,1200,1100,1000,900,800,700,600,500,400,300, 200 or 100ppm by weight.

阴极16可包括活性阴极材料,该材料通常涂布在阴极集电器上。 Cathode 16 may include an active cathode material, the cathode current collector material is usually applied. 集电器通常是钛、不锈钢、镍、铝或铝合金,例如铝箔。 Current collector is generally titanium, stainless steel, nickel, aluminum or an aluminum alloy, such as aluminum foil. 活性材料可以是例如金属氧化物、卤化物或硫属元素化物;或者,活性材料可以是硫、有机硫聚合物。 Active material may be, for example metal oxides, chalcogenides or halides thereof; Alternatively, the active material can be sulfur, organic sulfur polymer. 具体实例包括MnO2、V2O3、CoF3、MoS2、FeS2、SOCl2、MoO3、S、(C6HsN)n、(S3N2)n,其中n至少为2。 Specific examples include MnO2, V2O3, CoF3, MoS2, FeS2, SOCl2, MoO3, S, (C6HsN) n, (S3N2) n, where n is at least 2. 活性材料也可以是单氟化碳。 The active material may be a single carbon fluoride. 实例是具有通式CFx的化合物,其中x为0.5-1.0。 Examples of a compound having the general formula CFx, wherein x is 0.5-1.0. 活性材料可以与导电材料如碳和粘合剂如聚四氟乙烯(PTFE)混合。 The active material may be mixed with a conductive material such as carbon and a binder such as polytetrafluoroethylene (PTFE). 阴极的实例是包括涂有MnO2的铝箔的阴极。 Examples of the cathode comprising an aluminum foil coated with MnO2 cathode. 可根据美国专利No.4279972中所述制备阴极。 The cathode can be prepared in accordance with U.S. Patent No.4279972.

阳极12可由通常为碱金属,例如Li、K,或碱土金属,例如Ca、Mg形式的活性阳极材料组成。 Anode 12 may be typically an alkali metal such as Li, K, or an alkaline earth metal such as Ca, Mg in the form of active anode material. 阳极也可由碱金属和碱土金属的合金或者碱金属和Al的合金组成。 Alloy anode may also be alkali and alkaline earth metals or alkali metal and Al alloy. 可使用带有或不带基材的阳极。 Anode may be used with or without a substrate. 阳极也可由活性阳极材料和粘合剂组成。 Anode may also be active anode material and a binder. 在此情况下,活性阳极材料可包括碳、石墨、炔属中间相碳、焦炭、金属氧化物和/或锂氧化的金属氧化物。 In this case, the active anode material may include carbon, graphite, an acetylenic mesophase carbon, coke, metal oxides and / or metal oxide lithium oxide. 粘合剂可以是例如PTFE。 The adhesive may be, for example PTFE. 可混合活性阳极材料与粘合剂,形成可应用到阳极12的基材上的糊料。 Active anode material can be mixed with a binder to form a paste can be applied to the anode 12 on the substrate.

在一些实施方案中,在锂阳极内的钠含量小于约500ppm重量,例如小于400ppm,小于300ppm,小于200或小于100ppm。 In some embodiments, the sodium content in a lithium anode is less than about 500ppm by weight, such as less than 400ppm, less than 300ppm, less than 200 or less than 100ppm. 可仔细控制阳极加工(例如锂挤出)、电池加工、电池老化、电池预放电、电池储存和/或电池放电来控制钠含量。 Anode can be carefully controlled processing (for example, lithium extrusion), cell processing, battery aging, pre-discharge battery, battery storage and / or battery discharge to control the sodium content.

隔离件20可由在非水电化学电池中使用的任何标准隔离件材料形成。 Any standard spacer spacer material 20 may be used in a non-aqueous electrochemical cell is formed. 例如,可由聚丙烯(例如非织造聚丙烯或微孔聚丙烯)、聚乙烯、聚丙烯和聚乙烯的层材,和/或聚砜形成隔离件20。 For example, polypropylene may be formed (e.g., nonwoven polypropylene or microporous polypropylene), polyethylene sheet layer, polypropylene and polyethylene, and / or the spacer member 20 is formed of polysulfone.

为了组装电池,可将隔离件20切割成多片小的尺寸作为阳极12和阴极16,并如图1所示,放置于其间。 To assemble the cell, separator 20 can be cut into multiple small pieces of size as anode 12 and cathode 16, and shown in Figure 1, disposed therebetween. 然后将阳极12、阴极16和隔离件20置于壳体22内,其中壳体可由金属如镍、镀镍钢、不锈钢或铝,或塑料如聚氯乙稀、聚丙烯、聚砜、ABS或聚酰胺制造。 Then the anode 12, cathode 16 and separator 20 disposed within the housing 22, wherein the housing may be a metal such as nickel, nickel plated steel, stainless steel or aluminum, or plastics such as polyvinyl chloride, polypropylene, polysulfone, ABS or manufacture of polyamide. 然后用电解质溶液填充壳体22并密封。 Then the housing 22 is filled with an electrolyte solution and sealed. 壳体22的一端用盖帽24和可提供气密和流体密封的环状绝缘垫圈26密闭。 One end of the housing 22 with the cap 24 and can provide an airtight and fluid-tight sealed annular insulating gasket 26. 正集电器18(它可由铝制造)将阴极16连接到盖帽24上。 Positive current collector 18 (which may be made of aluminum) would cathode 16 is connected to the cap 24. 盖帽24也可由铝制造。 Cap 24 may also be made of aluminum. 安全阀28置于盖帽24的内侧,并构造为当压力超过某一预定值时降低电池10内的压力。 Valve 28 placed on the inside of the cap 24, and is configured to reduce the pressure inside when the battery 10 when the pressure exceeds a predetermined value. 组装电池的其余方法公开于美国专利Nos.4279972、4401735和4526846中。 The remaining battery assembly is disclosed in U.S. Patent Nos.4279972,4401735 and 4,526,846 in.

也可使用电池10的其它结构,其中包括例如硬币电池结构。 Other configurations may also be used battery 10, including, for example coin cell structure. 电池可具有不同的电压,例如1.5V、3.0V或4.0V。 Batteries may have different voltages, such as 1.5V, 3.0V or 4.0V.

其它实施方案在权利要求以内。 Other embodiments within the claims.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
CN101379653B11 Dec 200631 Aug 2011第一工业制药株式会社Lithium secondary battery using ionic liquid
CN101461088B30 May 200721 Dec 2011三洋电机株式会社高电压充电型非水电解质二次电池
US802178730 May 200720 Sep 2011Sanyo Electric Co., Ltd.High-voltage charge type nonaqueous electrolyte secondary cell
Classifications
International ClassificationH01M6/16, H01M10/36, H01M10/052, H01M10/0569, H01M10/0568
Cooperative ClassificationH01M10/0569, H01M6/164, H01M6/166, H01M10/052, H01M2300/0037, H01M10/0568, Y10T29/49108
European ClassificationH01M10/0569, H01M10/052, H01M10/0568, H01M6/16E3, H01M6/16E1
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