JP2016027568A - ケーブル型二次電池 - Google Patents
ケーブル型二次電池 Download PDFInfo
- Publication number
- JP2016027568A JP2016027568A JP2015158568A JP2015158568A JP2016027568A JP 2016027568 A JP2016027568 A JP 2016027568A JP 2015158568 A JP2015158568 A JP 2015158568A JP 2015158568 A JP2015158568 A JP 2015158568A JP 2016027568 A JP2016027568 A JP 2016027568A
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- Prior art keywords
- electrolyte
- active material
- secondary battery
- current collector
- external
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000003792 electrolyte Substances 0.000 claims abstract description 142
- 239000007772 electrode material Substances 0.000 claims abstract description 106
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 46
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000000926 separation method Methods 0.000 claims abstract description 39
- 238000010521 absorption reaction Methods 0.000 claims description 82
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 44
- -1 aluminum-cadmium Chemical compound 0.000 claims description 38
- 229910052751 metal Inorganic materials 0.000 claims description 31
- 239000002184 metal Substances 0.000 claims description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 29
- 229910052759 nickel Inorganic materials 0.000 claims description 29
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 24
- 239000011149 active material Substances 0.000 claims description 22
- 229910052719 titanium Inorganic materials 0.000 claims description 22
- 239000010936 titanium Substances 0.000 claims description 22
- 229910052799 carbon Inorganic materials 0.000 claims description 21
- 229910052744 lithium Inorganic materials 0.000 claims description 21
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 20
- 229910052782 aluminium Inorganic materials 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 20
- 150000002739 metals Chemical class 0.000 claims description 19
- 229920000642 polymer Polymers 0.000 claims description 19
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 18
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 18
- 229910003002 lithium salt Inorganic materials 0.000 claims description 18
- 159000000002 lithium salts Chemical class 0.000 claims description 18
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 17
- 229920001940 conductive polymer Polymers 0.000 claims description 17
- 229920001451 polypropylene glycol Polymers 0.000 claims description 14
- 229910052709 silver Inorganic materials 0.000 claims description 13
- 239000004020 conductor Substances 0.000 claims description 12
- 239000005518 polymer electrolyte Substances 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 12
- 239000010935 stainless steel Substances 0.000 claims description 12
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 11
- 239000007784 solid electrolyte Substances 0.000 claims description 11
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 claims description 10
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 10
- 229920005569 poly(vinylidene fluoride-co-hexafluoropropylene) Polymers 0.000 claims description 10
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 10
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 10
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 10
- 229910015015 LiAsF 6 Inorganic materials 0.000 claims description 9
- 229910013684 LiClO 4 Inorganic materials 0.000 claims description 9
- 229910013870 LiPF 6 Inorganic materials 0.000 claims description 9
- 229910012513 LiSbF 6 Inorganic materials 0.000 claims description 9
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 9
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 9
- 229920001577 copolymer Polymers 0.000 claims description 9
- PWRLWCQANJNXOR-UHFFFAOYSA-N dilithium chloro(dioxido)borane Chemical compound [Li+].[Li+].[O-]B([O-])Cl PWRLWCQANJNXOR-UHFFFAOYSA-N 0.000 claims description 9
- HSZCZNFXUDYRKD-UHFFFAOYSA-M lithium iodide Inorganic materials [Li+].[I-] HSZCZNFXUDYRKD-UHFFFAOYSA-M 0.000 claims description 9
- 239000004332 silver Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910015044 LiB Inorganic materials 0.000 claims description 8
- 229910013063 LiBF 4 Inorganic materials 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 7
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- ZZXUZKXVROWEIF-UHFFFAOYSA-N 1,2-butylene carbonate Chemical compound CCC1COC(=O)O1 ZZXUZKXVROWEIF-UHFFFAOYSA-N 0.000 claims description 6
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 claims description 6
- 229910000925 Cd alloy Inorganic materials 0.000 claims description 6
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims description 6
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical group O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims description 6
- RJUFJBKOKNCXHH-UHFFFAOYSA-N Methyl propionate Chemical compound CCC(=O)OC RJUFJBKOKNCXHH-UHFFFAOYSA-N 0.000 claims description 6
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 6
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 claims description 6
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 6
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 claims description 6
- 229940017219 methyl propionate Drugs 0.000 claims description 6
- 150000004767 nitrides Chemical class 0.000 claims description 6
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- 229910052684 Cerium Inorganic materials 0.000 claims description 5
- 229910012851 LiCoO 2 Inorganic materials 0.000 claims description 5
- 229910011281 LiCoPO 4 Inorganic materials 0.000 claims description 5
- 229910010707 LiFePO 4 Inorganic materials 0.000 claims description 5
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 claims description 5
- 229910013716 LiNi Inorganic materials 0.000 claims description 5
- 229910013210 LiNiMnCoO Inorganic materials 0.000 claims description 5
- 229910013290 LiNiO 2 Inorganic materials 0.000 claims description 5
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 3
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- 239000006229 carbon black Substances 0.000 claims description 3
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 3
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- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims 1
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- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
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- RIUWBIIVUYSTCN-UHFFFAOYSA-N trilithium borate Chemical compound [Li+].[Li+].[Li+].[O-]B([O-])[O-] RIUWBIIVUYSTCN-UHFFFAOYSA-N 0.000 description 1
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- H01M10/0431—Cells with wound or folded electrodes
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- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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Abstract
【解決手段】電解質を含むリチウムイオン供給コア部110;リチウムイオン供給コア部110の外面を囲んで形成された開放構造の内部集電体120、内部集電体120の表面に形成された内部電極活物質層、及び前記内部電極活物質層の外面に形成された第1電解質吸収層を備える内部電極120;内部電極120の外面を囲んで形成され、電極の短絡を防止する分離層130;分離層130の表面に形成された第2電解質吸収層140;並びに第2電解質吸収層140の外面を囲んで形成され、外部電極活物質層150及び外部集電体160を備える外部電極;を含み、所定形状の水平断面を有して長さ方向に延びたケーブル型二次電池100。
【選択図】図1
Description
次電池としては、鉛蓄電池、ニッケル‐カドミウム電池(NiCd)、ニッケル水素蓄電池(NiMH)、リチウムイオン電池(Li‐ion)、リチウムイオンポリマー電池(Li‐ion polymer)がある。二次電池は使い捨ての一次電池に比べて経済的
な利点と環境的な利点を共に提供する。
定性と優れた性能を維持でき、電解質が電極の活物質に流入し易い新規な線型構造の二次電池を提供することを目的とする。
PC)、ブチレンカーボネート(BC)、ビニレンカーボネート(VC)、ジエチルカーボネート(DEC)、ジメチルカーボネート(DMC)、エチルメチルカーボネート(EMC)、メチルホルメート(MF)、γ‐ブチロラクトン、スルホラン、メチルアセテート(MA)またはメチルプロピオネート(MP)を使用した非水電解液;PEO、PVdF、PVdF‐HFP、PMMA、PANまたはPVACを使用したゲル型高分子電解質;若しくは、PEO、PPO(polypropylene oxide)、PEI(p
olyethylene imine)、PES(polyethylene sulphide)またはPVAc(polyvinyl acetate)を使用した固体電解質
などを使用することができる。また、このような電解質は、リチウム塩をさらに含むことができ、このようなリチウム塩としては、LiCl、LiBr、LiI、LiClO4、
LiBF4、LiB10Cl10、LiPF6、LiCF3SO3、LiCF3CO2、LiAsF6、LiSbF6、LiAlCl4、CH3SO3Li、CF3SO3Li、(CF3SO2)2NLi、クロロほう酸リチウム、低級脂肪族カルボン酸リチウム、及びテトラフェニルホウ酸リチウムなどを使用することが望ましい。
層であり得るが、これらに限定されることはない。
ほう酸リチウム、低級脂肪族カルボン酸リチウム、及びテトラフェニルホウ酸リチウムなどが挙げられる。
び請求範囲に使われた用語や単語は通常的や辞書的な意味に限定して解釈されてはならず、発明者自らは発明を最善の方法で説明するために用語の概念を適切に定義できるという原則に則して本発明の技術的な思想に応ずる意味及び概念で解釈されねばならない。
ムイオン供給コア部110の電解質は内部電極120の内部集電体を通過して内部電極活物質層及び外部電極活物質層150に到達することができる。したがって、電解質層の厚さを無理に増加させる必要がなく、さらに電解質層を必須構成要素としないため、選択的にセパレータのみを使用することもできる。すなわち、本発明のケーブル型二次電池は、電解質を含むリチウムイオン供給コア部110を備えることで、電極活物質に浸透し易く、電極におけるリチウムイオンの供給及び交換を容易に行うことができるため、電池の容量特性及びサイクル特性に優れる。
iBF4、LiB10Cl10、LiPF6、LiCF3SO3、LiCF3CO2、LiAsF6
、LiSbF6、LiAlCl4、CH3SO3Li、CF3SO3Li、(CF3SO2)2N
Li、クロロほう酸リチウム、低級脂肪族カルボン酸リチウム、及びテトラフェニルホウ酸リチウムなどを使用することが望ましい。また、このようなリチウムイオン供給コア部110は、電解質のみで構成でき、液体電解質の場合には多孔質の担体を使用して構成することもできる。
、ポリ窒化硫黄、ITO、銀、パラジウム、及びニッケルなどが使用でき、伝導性高分子としては、ポリアセチレン、ポリアニリン、ポリピロール、ポリチオフェン、及びポリ窒化硫黄などが使用できる。ただし、集電体に使用される非伝導性高分子は特に種類を限定しない。
級脂肪族カルボン酸リチウム、及びテトラフェニルホウ酸リチウムなどを使用することが望ましい。
でき、電池特性の向上に寄与する。
LiCF3SO3、LiCF3CO2、LiAsF6、LiSbF6、LiAlCl4、CH3S
O3Li、CF3SO3Li、(CF3SO2)2NLi、クロロほう酸リチウム、低級脂肪族カルボン酸リチウム、及びテトラフェニルホウ酸リチウムなどを使用することが望ましい。
LiCF3CO2、LiAsF6、LiSbF6、LiAlCl4、CH3SO3Li、CF3SO3Li、(CF3SO2)2NLi、クロロほう酸リチウム、低級脂肪族カルボン酸リチウム、及びテトラフェニルホウ酸リチウムが挙げられる。
電極活物質層150、及び前記外部電極活物質層の外面を囲んで形成された外部集電体160を備える外部電極;を含む。
で製造することもできる。
部集電体を備える構造の外に、前記第2電解質吸収層の外面を囲んで形成された外部集電体、及び前記外部集電体の外面を囲んで形成された外部電極活物質層を備える構造;前記第2電解質吸収層の外面を囲んで形成された外部集電体、及び前記外部集電体の外面を囲み、前記第2電解質吸収層と接するように形成された外部電極活物質層を備える構造;または、前記第2電解質吸収層の外面を囲んで形成された外部電極活物質層、及び前記外部電極活物質層内に被覆され、前記第2電解質吸収層の外面を離隔した状態で囲んで形成された外部集電体を備える構造であり得る。
110、210、310:リチウムイオン供給コア部
120、220、320:内部電極
130、230、330:分離層
140、240、340:第2電解質吸収層
150、250、350:外部電極活物質層
160、260、360:外部集電体
170、270、370:保護被覆
Claims (23)
- 所定形状の水平断面を有して長さ方向に延びたケーブル型二次電池であって、
電解質を含むリチウムイオン供給コア部;
前記リチウムイオン供給コア部の外面を囲んで形成された開放構造の内部集電体、前記内部集電体の表面に形成された内部電極活物質層、及び前記内部電極活物質層の外面に形成された第1電解質吸収層を備える内部電極;
前記内部電極の外面を囲んで形成され、電極の短絡を防止する分離層;
前記分離層の表面に形成された第2電解質吸収層;並びに
前記第2電解質吸収層の外面を囲んで形成され、外部電極活物質層及び外部集電体を備える外部電極;を含むケーブル型二次電池。 - 前記開放構造の内部集電体が、巻き取られたワイヤ型集電体またはメッシュ型集電体であることを特徴とする請求項1に記載のケーブル型二次電池。
- 前記外部電極において、前記外部電極活物質層が、前記第2電解質吸収層の外面を囲んで形成され、かつ前記外部集電体が、前記外部電極活物質層の外面を囲んで形成されるか;
前記外部集電体が、前記第2電解質吸収層の外面を囲んで形成され、かつ前記外部電極活物質層が、前記外部集電体の外面を囲んで形成されるか;
前記外部集電体が、前記第2電解質吸収層の外面を囲んで形成され、かつ前記外部電極活物質層が、前記外部集電体の外面を囲み、前記第2電解質吸収層と接するように形成されるか;または、
前記外部電極活物質層が、前記第2電解質吸収層の外面を囲んで形成され、かつ前記外部集電体が、前記外部電極活物質層内に被覆され、前記第2電解質吸収層の外面を離隔した状態で囲んで形成されることを特徴とする請求項1に記載のケーブル型二次電池。 - 前記外部集電体が、パイプ型集電体、巻き取られたワイヤ型集電体、巻き取られたシート型集電体、またはメッシュ型集電体であることを特徴とする請求項1に記載のケーブル型二次電池。
- 前記内部集電体が、ステンレススチール、アルミニウム、ニッケル、チタン、焼成炭素、もしくは銅;カーボン、ニッケル、チタンもしくは銀で表面処理されたステンレススチール;アルミニウム‐カドミウム合金;導電材で表面処理された非伝導性高分子;または、伝導性高分子から製造されたことを特徴とする請求項1に記載のケーブル型二次電池。
- 前記導電材が、ポリアセチレン、ポリアニリン、ポリピロール、ポリチオフェン、ポリ窒化硫黄、酸化インジウムスズ(ITO)、銀、パラジウム、及びニッケルのうち選択された1種または2種以上の混合物であることを特徴とする請求項5に記載のケーブル型二次電池。
- 前記伝導性高分子が、ポリアセチレン、ポリアニリン、ポリピロール、ポリチオフェン、及びポリ窒化硫黄のうち選択された1種または2種以上の混合物であることを特徴とする請求項5に記載のケーブル型二次電池。
- 前記外部集電体が、ステンレススチール、アルミニウム、ニッケル、チタン、焼成炭素、もしくは銅;カーボン、ニッケル、チタンもしくは銀で表面処理されたステンレススチール;アルミニウム‐カドミウム合金;導電材で表面処理された非伝導性高分子;伝導性高分子;Ni、Al、Au、Ag、Al、Pd/Ag、Cr、Ta、Cu、BaもしくはITOの金属粉末を含む金属ペースト;または、黒鉛、カーボンブラックもしくは炭素ナ
ノチューブの炭素粉末を含む炭素ペーストから製造されたことを特徴とする請求項1に記載のケーブル型二次電池。 - 前記電解質が、エチレンカーボネート(EC)、プロピレンカーボネート(PC)、ブチレンカーボネート(BC)、ビニレンカーボネート(VC)、ジエチルカーボネート(DEC)、ジメチルカーボネート(DMC)、エチルメチルカーボネート(EMC)、メチルホルメート(MF)、γ‐ブチロラクトン(γ‐BL)、スルホラン、メチルアセテート(MA)またはメチルプロピオネート(MP)を使用した非水電解液;PEO、PVdF、PVdF‐HFP、PMMA、PANまたはPVACを使用したゲル型高分子電解質;および、PEO、ポリプロピレンオキシド(PPO)、ポリエーテルイミン(PEI)、ポリエチレンスルフィド(PES)またはポリビニルアセテート(PVAc)を使用した固体電解質;から選択された電解質を含むことを特徴とする請求項1に記載のケーブル型二次電池。
- 前記電解質が、リチウム塩をさらに含むことを特徴とする請求項1に記載のケーブル型二次電池。
- 前記リチウム塩が、LiCl、LiBr、LiI、LiClO4、LiBF4、LiB10Cl10、LiPF6、LiCF3SO3、LiCF3CO2、LiAsF6、LiSbF6、L
iAlCl4、CH3SO3Li、CF3SO3Li、(CF3SO2)2NLi、クロロほう酸リチウム、低級脂肪族カルボン酸リチウム、及びテトラフェニルホウ酸リチウムから選択された1種または2種以上であることを特徴とする請求項10に記載のケーブル型二次電池。 - 前記内部電極が負極であり、前記外部電極が正極であるか、または前記内部電極が正極であり、前記外部電極が負極であることを特徴とする請求項1に記載のケーブル型二次電池。
- 前記内部電極が負極であり、前記外部電極が正極である場合、前記内部電極活物質層は、天然黒鉛、人造黒鉛、もしくは炭素質材料;リチウム含有チタン複合酸化物(LTO)、Si、Sn、Li、Zn、Mg、Cd、Ce、NiもしくはFeを含む金属類(Me);前記金属類の合金類;前記金属類の酸化物(MeOx);及び前記金属類と炭素との複合体からなる群から選択されたいずれか1つの活物質またはこれらのうち2種以上の混合物を含み、
前記外部電極活物質層は、LiCoO2、LiNiO2、LiMn2O4、LiCoPO4
、LiFePO4、LiNiMnCoO2、及びLiNi1-x-y-zCoxM1yM2zO2(M
1及びM2は互いに独立してAl、Ni、Co、Fe、Mn、V、Cr、Ti、W、Ta、Mg及びMoからなる群より選択され、x、y及びzは互いに独立した酸化物組成元素の原子分率であって、0≦x<0.5、0≦y<0.5、0≦z<0.5、x+y+z≦1である)からなる群より選択されたいずれか1つの活物質またはこれらのうち2種以上の混合物を含むことを特徴とする請求項1に記載のケーブル型二次電池。 - 前記第1電解質吸収層及び前記第2電解質吸収層は、互いに独立して、PEO、PVdF、PVdF‐HFP、PMMA、PANまたはPVACを使用したゲル型高分子電解質;および、PEO、ポリプロピレンオキシド(PPO)、ポリエーテルイミン(PEI)、ポリエチレンスルフィド(PES)またはポリビニルアセテート(PVAc)を使用した固体電解質;から選択された高分子を含むことを特徴とする請求項1に記載のケーブル型二次電池。
- 前記第1電解質吸収層及び第2電解質吸収層は、互いに独立して、リチウム塩をさらに
含むことを特徴とする請求項1に記載のケーブル型二次電池。 - 前記リチウム塩が、LiCl、LiBr、LiI、LiClO4、LiBF4、LiB10Cl10、LiPF6、LiCF3SO3、LiCF3CO2、LiAsF6、LiSbF6、L
iAlCl4、CH3SO3Li、CF3SO3Li、(CF3SO2)2NLi、クロロほう酸リチウム、低級脂肪族カルボン酸リチウム、及びテトラフェニルホウ酸リチウムから選択された1種または2種以上を含むことを特徴とする請求項15に記載のケーブル型二次電池。 - 前記内部電極が正極であり、前記外部電極が負極である場合、前記内部電極活物質層は、LiCoO2、LiNiO2、LiMn2O4、LiCoPO4、LiFePO4、LiNiMnCoO2、及びLiNi1-x-y-zCoxM1yM2zO2(M1及びM2は互いに独立してAl、Ni、Co、Fe、Mn、V、Cr、Ti、W、Ta、Mg及びMoからなる群より選択され、x、y及びzは互いに独立した酸化物組成元素の原子分率であって、0≦x<0.5、0≦y<0.5、0≦z<0.5、x+y+z≦1である)からなる群より選択されたいずれか1つの活物質またはこれらのうち2種以上の混合物を含み、
前記外部電極活物質層は、天然黒鉛、人造黒鉛、もしくは炭素質材料;リチウム含有チタン複合酸化物(LTO)、Si、Sn、Li、Zn、Mg、Cd、Ce、NiもしくはFeを含む金属類(Me);前記金属類の合金類;前記金属類の酸化物(MeOx);及び前記金属類と炭素との複合体からなる群から選択されたいずれか1つの活物質またはこれらのうち2種以上の混合物を含むことを特徴とする請求項1に記載のケーブル型二次電池。 - 前記分離層が、電解質層またはセパレータであることを特徴とする請求項1に記載のケーブル型二次電池。
- 前記電解質層が、PEO、PVdF、PVdF‐HFP、PMMA、PANまたはPVACを使用したゲル型高分子電解質;および、PEO、ポリプロピレンオキシド(PPO)、ポリエーテルイミン(PEI)、ポリエチレンスルフィド(PES)またはポリビニルアセテート(PVAc)を使用した固体電解質;から選択された電解質を含むことを特徴とする請求項18に記載のケーブル型二次電池。
- 前記電解質層が、リチウム塩をさらに含むことを特徴とする請求項19に記載のケーブル型二次電池。
- 前記リチウム塩が、LiCl、LiBr、LiI、LiClO4、LiBF4、LiB10Cl10、LiPF6、LiCF3SO3、LiCF3CO2、LiAsF6、LiSbF6、L
iAlCl4、CH3SO3Li、CF3SO3Li、(CF3SO2)2NLi、クロロほう酸リチウム、低級脂肪族カルボン酸リチウム、及びテトラフェニルホウ酸リチウムから選択された1種または2種以上であることを特徴とする請求項20に記載のケーブル型二次電池。 - 前記セパレータが、エチレン単独重合体、プロピレン単独重合体、エチレン‐ブテン共重合体、エチレン‐ヘキセン共重合体及びエチレン‐メタクリレート共重合体からなる群より選択されたポリオレフィン系高分子から製造された多孔性基材;ポリエステル、ポリアセタール、ポリアミド、ポリカーボネート、ポリイミド、ポリエーテルエーテルケトン、ポリエーテルスルホン、ポリフェニレンオキサイド、ポリフェニレンスルファイド及びポリエチレンナフタレンからなる群から選択された高分子から製造された多孔性基材;または、無機物粒子とバインダー高分子との混合物から形成された多孔性基材であることを特徴とする請求項18に記載のケーブル型二次電池。
- 所定形状の水平断面を有して長さ方向に延びたケーブル型二次電池であって、
電解質を含む2以上のリチウムイオン供給コア部;
前記リチウムイオン供給コア部の外面を囲んで形成された開放構造の内部集電体、前記内部集電体の表面に形成された内部電極活物質層、及び前記内部電極活物質層の外面に形成された第1電解質吸収層をそれぞれ備える互いに平行に配置された2以上の内部電極;
前記内部電極の外面を囲んで形成され、電極の短絡を防止する分離層;
前記分離層の表面に形成された第2電解質吸収層;並びに
前記第2電解質吸収層の外面を囲んで形成され、外部電極活物質層及び外部集電体を備える外部電極;を含むケーブル型二次電池。
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CN103891026B (zh) | 2016-06-29 |
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US20150244018A1 (en) | 2015-08-27 |
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US9755266B2 (en) | 2017-09-05 |
JP6247668B2 (ja) | 2017-12-13 |
EP2768060A1 (en) | 2014-08-20 |
JP5810224B2 (ja) | 2015-11-11 |
KR20130040159A (ko) | 2013-04-23 |
EP2768060A4 (en) | 2015-05-06 |
CN103891026A (zh) | 2014-06-25 |
US9306236B2 (en) | 2016-04-05 |
EP2768060B1 (en) | 2016-05-18 |
US20140212720A1 (en) | 2014-07-31 |
KR101506690B1 (ko) | 2015-03-27 |
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