CN104285319A - 锂二次电池用负极及包含该负极的锂离子二次电池 - Google Patents
锂二次电池用负极及包含该负极的锂离子二次电池 Download PDFInfo
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- CN104285319A CN104285319A CN201480001083.4A CN201480001083A CN104285319A CN 104285319 A CN104285319 A CN 104285319A CN 201480001083 A CN201480001083 A CN 201480001083A CN 104285319 A CN104285319 A CN 104285319A
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- secondary battery
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- 229910052744 lithium Inorganic materials 0.000 title description 14
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 50
- 239000002184 metal Substances 0.000 claims abstract description 50
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 5
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 5
- 230000009257 reactivity Effects 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 17
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 14
- 239000004411 aluminium Substances 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 239000007773 negative electrode material Substances 0.000 claims description 10
- 229910052759 nickel Inorganic materials 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 9
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 8
- 239000011149 active material Substances 0.000 claims description 7
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
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- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 4
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- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 4
- VUPKGFBOKBGHFZ-UHFFFAOYSA-N dipropyl carbonate Chemical compound CCCOC(=O)OCCC VUPKGFBOKBGHFZ-UHFFFAOYSA-N 0.000 claims description 4
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 claims description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 4
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- 238000001354 calcination Methods 0.000 claims description 3
- 239000003610 charcoal Substances 0.000 claims description 3
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
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- UHOPWFKONJYLCF-UHFFFAOYSA-N 2-(2-sulfanylethyl)isoindole-1,3-dione Chemical compound C1=CC=C2C(=O)N(CCS)C(=O)C2=C1 UHOPWFKONJYLCF-UHFFFAOYSA-N 0.000 claims description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 claims description 2
- RJUFJBKOKNCXHH-UHFFFAOYSA-N Methyl propionate Chemical compound CCC(=O)OC RJUFJBKOKNCXHH-UHFFFAOYSA-N 0.000 claims description 2
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- 150000005676 cyclic carbonates Chemical class 0.000 claims description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 2
- 229940017219 methyl propionate Drugs 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 1
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- 210000001787 dendrite Anatomy 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
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- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 229910007969 Li-Co-Ni Inorganic materials 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910013716 LiNi Inorganic materials 0.000 description 1
- 229910013872 LiPF Inorganic materials 0.000 description 1
- 101150058243 Lipf gene Proteins 0.000 description 1
- 229910006555 Li—Co—Ni Inorganic materials 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical class [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
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- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical class [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
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- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910002102 lithium manganese oxide Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- VROAXDSNYPAOBJ-UHFFFAOYSA-N lithium;oxido(oxo)nickel Chemical compound [Li+].[O-][Ni]=O VROAXDSNYPAOBJ-UHFFFAOYSA-N 0.000 description 1
- VLXXBCXTUVRROQ-UHFFFAOYSA-N lithium;oxido-oxo-(oxomanganiooxy)manganese Chemical compound [Li+].[O-][Mn](=O)O[Mn]=O VLXXBCXTUVRROQ-UHFFFAOYSA-N 0.000 description 1
- URIIGZKXFBNRAU-UHFFFAOYSA-N lithium;oxonickel Chemical compound [Li].[Ni]=O URIIGZKXFBNRAU-UHFFFAOYSA-N 0.000 description 1
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- 229910052723 transition metal Inorganic materials 0.000 description 1
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Classifications
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- H01M4/00—Electrodes
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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
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- H—ELECTRICITY
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- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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Abstract
本发明涉及二次电池用负极和包含该负极的二次电池,上述负极包括:负极集电体;负极活性物质,涂敷于上述负极集电体上;以及未涂敷部(负极极耳),以上述负极集电体的一部分向一侧突出的状态未涂敷负极活性物质,上述二次电池用负极包括金属部件,该金属部件与上述未涂敷部相接合,并且,与上述负极集电体相比,对金属氧化物的反应性或还原性高。
Description
技术领域
本发明涉及能够防止在电池内形成枝晶的锂二次电池用负极和包含该负极的锂离子二次电池。
背景技术
最近,随着对数码相机、手机、笔记本电脑之类的便携式电子设备或对高功率的混合动力汽车等高科技领域的研发,代替作为它们的电源的无法进行充电的一次电池,对能够进行充电及放电的二次电池的研究正在活跃进行。
二次电池可以举出镍-镉电池、镍-金属氢化物电池、镍-氢电池及锂二次电池等,其中,由于锂二次电池与镍-镉电池或镍-金属氢化物电池相比,工作电压高三倍(3.6V)以上,且每单位重量的能量密度特性优良,因此,正处于适用领域急剧扩大的趋势。
为了长期稳定地使用这种锂二次电池,有必要抑制以针状形态形成于负极表面上的枝晶(dendrite)的形成。上述枝晶为制备电池时从电极形成的金属异物(Fe、Cu、Ni、Co、Mn、Zn、Sn、Zr等)被氧化并析出于负极表面而形成的物质。上述枝晶不仅会使电池的循环性能降低,使电池不良率增加,而且还因外部压力或振动而穿透隔膜,使得正极/负极相连接,从而引起电极的内部短路,降低电池的安全性。
因此,为了制备安全性及稳定性得到改善的锂二次电池,需要研发能够抑制形成连接正极和负极的枝晶的二次电池。
发明内容
发明要解决的问题
本发明提供能够抑制在表面上形成枝晶的二次电池用负极。
并且,本发明提供包含上述负极的二次电池。
用于解决问题的方法
在本发明中,提供二次电池用负极,该负极包括:负极集电体;负极活性物质,涂敷于上述负极集电体上;以及未涂敷部(负极极耳),以上述负极集电体的一部分向一侧突出的状态未涂敷负极活性物质,其中,上述二次电池用负极包括金属部件,该金属部件与上述未涂敷部相接合,并且,与上述负极集电体相比,对金属氧化物的反应性或还原性高。
并且,在本发明中,提供包含上述负极的二次电池。
具体地,本发明提供二次电池,该二次电池包括:电极组件,通过卷绕在金属集电体的至少一面涂敷各个活性物质而成的正极、负极和隔膜而成;以及外置材料,用于收纳上述电极组件及非水类电解液,上述二次电池包括:多个正极未涂敷部及负极未涂敷部(正极极耳及负极极耳),上述金属集电体中的一部分以突出的状态未涂敷活性物质;金属部件,以与上述负极未涂敷部相接合的方式位于外置材料的内部;以及正极引线及负极引线,与上述正极未涂敷部及负极未涂敷部分别电连接,并向外置材料的外部突出。
发明效果
在本发明中,制备二次电池时,抑制在负极未涂敷部上形成枝晶,并形成用于降低内部短路发生率的金属部件,由此能够带来电池安全性的提高。
附图说明
图1为本发明一实施例的锂二次电池的俯视图。
[附图标记的说明]
11:电池外壳
13:电极组件
15:绝缘膜
17:正极引线
19:负极引线
23:金属部件
25:负极集电体和金属部件的接合部分
具体实施方式
以下,对本发明进行详细说明。
具体地,在本发明中,提供二次电池用负极,该负极包括:负极集电体;负极活性物质,涂敷于上述负极集电体上;以及未涂敷部(负极极耳),以上述负极集电体的一部分向一侧突出的状态未涂敷负极活性物质,其中,上述二次电池用负极包括金属部件,该金属部件与上述未涂敷部相接合,并且,与上述负极集电体相比,对金属氧化物的反应性或还原性高。
在本发明的负极中,上述负极集电体,只要是在充放电时不会引发化学变化,且具有导电性,则不受特殊限制,例如,可使用不锈钢、铝、铜、镍、钛、锻烧炭或由碳、镍、钛或银等进行表面处理的铝或不锈钢。
并且,与负极集电体相比,上述金属部件,只要是对Fe、Cu、Ni、Co、Mn、Zn、Sn及Zr等金属氧化物的氧化反应性或还原性高,且具有不会在电池内引起副反应的特性的物质,则不受特殊限制,具体地,可以举出选自由铝、金、银、铂及它们的合金组成的组中的单一物质或两种以上的混合物。更具体地,上述金属部件优选为铝或它的合金。
并且,上述金属部件能够以点接触于上述未涂敷部一侧或覆盖未涂敷部的整个表面的方式形成。
上述金属部件可借助常规的焊接方法来接合,例如,可利用激光、超声波或电阻焊接方法进行接合。
进而,上述金属部件优选实质上以无高度差的方式接合。即,为了制备圆筒形电池而卷绕电极和隔膜的情况下,由于集电体的活性物质涂敷部位和未涂敷部之间尤其受到比其他部位多的压力,因而发生电断线的可能性高。因此,在负极活性物质涂敷部位和金属部件粘结的未涂敷部之间形成高度差的情况下,当负极集电体受到压力时,可在集电体的整个表面带来损伤。因此,优选地,将金属部件以实质上与负极集电体及负极集电体的未涂敷部无高度差的方式形成,从而使负极集电体的整个表面均匀地受到压力。此时,“实质上无高度差”是指如上所述为了使集电体的压力均匀而高度差充分小。
具体地,上述金属部件优选为厚度为约0.001mm至约5mm、长度为约0.1mm至约10mm范围的四角形或椭圆形的薄片形部件或板形部件,除此之外,可呈条形或管形等。如果上述金属部件的厚度为0.001mm以下,则实质上难以进行接合,因此存在生产率降低的担忧,如果金属部件的厚度大于5mm,则存在不必要地增加电池的厚度,且形成严重的高度差的问题。
像这样,本发明通过在制备负极时,在负极集电体的一部分,例如,在未涂敷部的一面还接合反应性高于负极集电体的金属部件,从而使充放电时被氧化的金属异物在负极表面析出之前与上述金属部件发生反应,并首先在金属部件的表面析出,由此能够抑制在负极表面上形成枝晶。
例如,在利用铜的负极集电体的一部分接合利用铝的金属部件,或者接合利用金之类的还原性高的金属的金属部件的情况下,由于铝或上述还原性高的金属的反应性高于铜,因此,金属杂质在与负极表面发生反应之前,首先与作为金属部件的铝或还原性高的金属发生反应。其结果,在金属杂质被氧化的状态下,附着于负极表面之前,首先在金属部件的表面还原,并形成枝晶,因此,可以抑制在负极的表面上形成枝晶。
并且,本发明提供包含上述负极的二次电池。
具体地,本发明提供二次电池,该二次电池包括:电极组件,通过卷绕在金属集电体的至少一面涂敷各个活性物质而成的正极、负极和隔膜而成;以及外置材料,用于收纳上述电极组件及非水类电解液,上述二次电池包括:多个正极未涂敷部及负极未涂敷部(正极极耳及负极极耳),上述金属集电体中的一部分以突出的状态未涂敷活性物质;金属部件,以与上述负极未涂敷部相接合的方式位于外置材料的内部;以及正极引线及负极引线,与上述正极未涂敷部及负极未涂敷部分别电连接,并向外置材料的外部突出。
此时,在本发明的二次电池中,上述正极集电体,只要是既不会在该电池中引起化学变化,又具有高的导电性,则不受特殊限制,例如,可使用不锈钢、铝、铜、镍、钛、锻烧炭或由碳、镍、钛或银等进行表面处理的铝或不锈钢。集电体能够通过在其表面形成细小的凹凸的方式提高正极活性物质的粘结力,并能呈膜、薄片、箔、网、多孔质体、发泡体及无纺布等多种形态。
并且,上述正极活性物质,例如,可以举出由锂钴氧化物(LiCoO2)、锂镍氧化物(LiNiO2)等的层状化合物或由一种或一种以上的过渡金属取代的化合物;化学式Li1+xMn2-xO4(其中,x为0~0.33)、LiMnO3、LiMn2O3、LiMnO2等锂锰氧化物;锂铜氧化物(Li2CuO2);LiV3O8、V2O5、Cu2V2O7等钒氧化物;由化学式LiNi1-xMxO2(其中,M=Co、Mn、Al、Cu、Fe、Mg、B或Ga,x=0.01至0.3)表示的Ni位型锂镍氧化物;由化学式LiMn2-xMxO2(其中,M=Co、Ni、Fe、Cr、Zn或Ta,x=0.01至0.1)或Li2Mn3MO8(M=Fe、Co、Ni、Cu或Zn)表示的锂锰复合氧化物;化学式的Li的一部分由碱土金属离子取代的LiMn2O4二硫化物化合物;以及Fe2(MoO4)3等,但并不局限于此。
上述负极活性物质,可使用例如难石墨化碳、石墨类碳等碳;LixFe2O3(0≤x≤1)、LixWO2(0≤x≤1)、SnxMe1-xMe'yOz(Me:Mn、Fe、Pb、Ge,Me':Al、B、P、Si,周期表的一族、二族、三族元素、卤素;0<x≤1,1≤y≤3,1≤z≤8)等金属复合氧化物;锂金属;锂合金;硅类合金;锡类合金;SnO、SnO2、PbO、PbO2、Pb2O3、Pb3O4、Sb2O3、Sb2O4、Sb2O5、GeO、GeO2、Bi2O3、Bi2O4及Bi2O5等氧化物;聚乙炔等导电性聚合物;以及Li-Co-Ni类材料。
上述正极及负极活性物质还可以包含制备二次电池时通常使用的粘结剂、填充剂及导电材料等。
并且,在本发明的二次电池中,上述隔膜通常可以由多孔性的聚乙烯(PE)、聚丙烯(PP)等热塑性树脂形成。
并且,优选地,上述电解液为含锂盐的非水类电解液,上述非水类电解液包含碳酸酯类化合物,用于防止上述金属部件的腐蚀。
具体地,上述碳酸酯化合物,可以举出选自由包含碳酸乙烯酯(EC)、碳酸丙烯酯(PC)的环状碳酸酯、包含碳酸二乙酯(DEC)、碳酸二甲酯(DMC)、碳酸甲乙酯(EMC)及碳酸二丙酯(DPC)的线性碳酸酯、二甲基亚砜、乙腈、二甲氧基乙烷、二乙氧基乙烷、四氢呋喃、N-甲基-2-吡咯烷酮(NMP)、丙酸甲酯、丙酸乙酯、丙酸丙酯及γ-丁内酯(GBL)组成的组中的单一物质或两种以上的混合物。
这种结构的本发明的二次电池可发挥高能量密度、高功率特性、得到提高的安全性及稳定性。
以下,记载本发明的实施例及比较例。但是,以下实施例仅为记载本发明的优选一实施例,本发明不会因以下实施例而受到限制。
实施例
(实施例)
在制备通常的正极混合物浆料之后,在长长的薄片形铝箔上进行涂敷、干燥及压接,由此制备正极薄片。将通常的负极活性物质涂敷、干燥及压接于铜箔上而制备负极薄片。上述负极薄片的未涂敷部激光焊接铝金属部件。然后,在依次层叠负极、隔膜、正极、隔膜及负极之后,进行卷绕,并内置于圆筒形电池外壳。向电池外壳的内部注入1M的LiPF6的碳酸酯类电解液,由此制备了圆筒形电池。
(比较例)
除了不实施在上述负极薄片的未涂敷部接合铝金属部件的工序之外,以与实施例相同的方法制备了圆筒形电池。
(实验例)低电压不良率及内部微短路实验
在上述实施例及比较例中制备的二次电池的正极中添加1%的Cu氧化物之后,测定了各个电池的低电压不良率及内部的微短路的发生等。为了提高实验的可靠性,上述实验例及比较例的电池分别制备了10个。将结果示于表1中。
表1
区别 | 低电压不良率(样品数:10个) | 内部发生微短路 |
实施例 | 0% | 0% |
比较例 | 40% | 40% |
如表1所示,在本发明的实施例的具有接合有金属部件的未涂敷部的二次电池的情况下,可以确认与比较例的二次电池相比,低电压不良率及内部短路的发生频率显著减少。
Claims (11)
1.一种二次电池用负极,包括:负极活性物质,涂敷于所述负极集电体上;以及未涂敷部(负极极耳),所述负极集电体的一部分向一侧突出的状态未涂敷负极活性物质,所述二次电池用负极的特征在于,包括金属部件,该金属部件与所述未涂敷部相接合,并且,与所述负极集电体相比,对金属氧化物的反应性或还原性高。
2.根据权利要求1所述的二次电池用负极,其特征在于,所述负极集电体包含不锈钢、铝、铜、镍、钛、锻烧炭或由碳、镍、钛或银进行表面处理的铝或不锈钢。
3.根据权利要求1所述的二次电池用负极,其特征在于,所述金属部件为包含选自由铝、金、银、铂及它们的合金组成的组中的单一物质或两种以上的混合物。
4.根据权利要求1所述的二次电池用负极,其特征在于,所述金属部件以一部分点接触于所述未涂敷部一侧或覆盖未涂敷部的整个表面的方式形成。
5.根据权利要求1或4所述的二次电池用负极,其特征在于,所述金属部件利用激光、超声波或电阻焊接方法进行接合而形成。
6.根据权利要求1所述的二次电池用负极,其特征在于,所述金属部件与所述负极集电体以无高度差的方式接合而形成。
7.根据权利要求1所述的二次电池用负极,其特征在于,所述金属部件为四角形或椭圆形的薄片形部件或板形部件。
8.根据权利要求7所述的二次电池用负极,其特征在于,所述金属部件的厚度为0.001mm至5mm,长度为0.1mm至10mm。
9.一种二次电池,其特征在于,包括权利要求1所述的二次电池用负极。
10.根据权利要求9所述的二次电池,括:电极组件,通过卷绕以在金属集电体的至少一面涂敷各个活性物质的方式形成的正极、负极和隔膜而成;以及外置材料,用于收纳所述电极组件及非水类电解液,所述二次电池的特征在于,包括:
多个正极未涂敷部及负极未涂敷部(正极极耳及负极极耳),所述金属集电体中的一部分以突出的状态未涂敷活性物质;
金属部件,以与所述负极未涂敷部接合的方式位于外置材料的内部;以及
正极引线及负极引线,与所述正极未涂敷部及负极未涂敷部分别电连接,并向外置材料的外部突出。
11.根据权利要求10所述的二次电池,其特征在于,所述非水类电解液为选自由包含碳酸乙烯酯(EC)、碳酸丙烯酯(PC)的环状碳酸酯、碳酸二乙酯(DEC)、碳酸二甲酯(DMC)、碳酸甲乙酯(EMC)、碳酸二丙酯(DPC)、二甲基亚砜、乙腈、二甲氧基乙烷、二乙氧基乙烷、四氢呋喃、N-甲基-2-吡咯烷酮(NMP)、丙酸甲酯、丙酸乙酯、丙酸丙酯及γ-丁内酯(GBL)组成的组中的单一物质或两种以上的混合物。
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- 2014-04-30 EP EP14784181.1A patent/EP2838141B1/en active Active
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US4622277A (en) * | 1985-09-30 | 1986-11-11 | Duracell Inc. | Electrochemical cells |
CN1783568A (zh) * | 2004-11-29 | 2006-06-07 | 三星Sdi株式会社 | 锂充电电池 |
JP2007095656A (ja) * | 2005-08-30 | 2007-04-12 | Sanyo Electric Co Ltd | 非水系二次電池 |
CN101299456A (zh) * | 2007-05-03 | 2008-11-05 | 三星Sdi株式会社 | 电极组件和具有该电极组件的二次电池 |
JP2009123374A (ja) * | 2007-11-12 | 2009-06-04 | Fdk Corp | 非水電解質蓄電デバイス |
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US20140356674A1 (en) | 2014-12-04 |
JP2015519710A (ja) | 2015-07-09 |
KR20140131699A (ko) | 2014-11-14 |
EP2838141A4 (en) | 2015-06-17 |
EP2838141A1 (en) | 2015-02-18 |
CN104285319B (zh) | 2017-10-27 |
US10050250B2 (en) | 2018-08-14 |
KR101595613B1 (ko) | 2016-02-18 |
WO2014182001A1 (ko) | 2014-11-13 |
EP2838141B1 (en) | 2017-04-26 |
JP5937273B2 (ja) | 2016-06-22 |
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