JP5289274B2 - リチウム2次電池 - Google Patents
リチウム2次電池 Download PDFInfo
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- JP5289274B2 JP5289274B2 JP2009247747A JP2009247747A JP5289274B2 JP 5289274 B2 JP5289274 B2 JP 5289274B2 JP 2009247747 A JP2009247747 A JP 2009247747A JP 2009247747 A JP2009247747 A JP 2009247747A JP 5289274 B2 JP5289274 B2 JP 5289274B2
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- H—ELECTRICITY
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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/134—Electrodes based on metals, Si or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
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- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
LiaA1−bXbD2(0.90≦a≦1.8、0≦b<0.5)
[化学式2]
LiaE1−bXbO2−cDc(0.90≦a≦1.8、0≦b<0.5、0≦c≦0.05)
[化学式3]
LiE2−bXbO4−cDc(0≦b<0.5、0≦c≦0.05)
[化学式4]
LiaCoGbO2(0.90≦a≦1.8、0.001≦b≦0.1)
[化学式5]
LiaMnGbO2(0.90≦a≦1.8、0.001≦b≦0.1)
[化学式6]
LiaMn2GbO4(0.90≦a≦1.8、0.001≦b≦0.1)
[化学式7]
Li(3−f)J2(PO4)3(0≦f≦2)
[化学式8]
Li(3−f)Fe2(PO4)3(0≦f≦2)
[化学式9]
LiFePO4
(前記化学式において、AはCo、Mn、及びこれらの組合せからなる群より選択され;XはAl、Ni、Co、Mn、Cr、Fe、Mg、Sr、V、希土類元素、及びこれらの組合せからなる群より選択され;DはO、F、S、P、及びこれらの組合せからなる群より選択され;EはCo、Mn、及びこれらの組合せからなる群より選択され;GはAl、Cr、Mn、Fe、Mg、La、Ce、Sr、V、及びこれらの組合せからなる群より選択され;QはTi、Mo、Mn、及びこれらの組合せからなる群より選択され;JはV、Cr、Mn、Co、Ni、Cu、及びこれらの組合せからなる群より選択される。)
LigNihL1−jOe
(前記化学式で、0.8≦g≦2、0≦h≦1であり、eは1乃至2であり、0≦j≦1であり、LはAl、Mn、Mg、Zr、La、及びこれらの組合せからなる群より選択される。)
[化学式11]
LixNiyCozL´1−y−zOq
(前記化学式で、0.65≦x≦1、0≦y≦1、0≦z≦1、0≦y+z≦1であり、qは1.8乃至2であり、L´はAl、Mn、Mg、Zr、La、及びこれらの組合せからなる群より選択される。)
前記負極は、バインダーを含み、選択的に導電剤をさらに含むことができる。また、前記正極は、バインダー及び導電剤を含む。
1.正極の製造
LiCoO297質量%及びLi x Ni y Co z Al 1−y−z O q (x=2、y=1、z=0、q=2、つまりLi 2 NiO 2 )3質量%を混合した混合正極活物質、ポリフッ化ビニリデンバインダー、及びカーボンブラック導電剤をN−メチルピロリドン溶媒中で混合して、正極活物質スラリーを製造した。この時、前記正極活物質、バインダー、及び導電剤の混合比率は、94:3:3質量%とした。前記正極活物質スラリーをAl箔電流集電体に塗布する通常の電極製造工程で、正極を製造した。
平均粒径3μmの鱗片状人造黒鉛微細粒子をロータリーミル(rotary mill)でミリングして、平均粒径20μmの人造黒鉛コアを製造した。前記ミリング工程で前記微細粒子が互いに凝集して、製造された人造黒鉛コアの内部に閉気孔及び開気孔形態の気孔が形成された。
正極活物質としてLiCoO297質量%及びLi2NiO23質量%を混合した混合正極活物質を使用したことを除いては、前記実施例1と同一に実施した。
正極活物質としてLiCoO2だけを使用したことを除いては、前記実施例1と同一に実施した。
正極活物質としてLiCoO299質量%及びLi2NiO21質量%を混合した正極活物質を使用したことを除いては、前記実施例1と同一に実施した。
正極活物質としてLiCoO295質量%及びLi2NiO25質量%を混合した正極活物質を使用したことを除いては、前記実施例1と同一に実施した。
正極活物質としてLiCoO290質量%及びLi2NiO210質量%を混合した正極活物質を使用したことを除いては、前記実施例1と同一に実施した。
112 負極
113 セパレータ
114 正極
120 電池容器
140 封入部材
Claims (5)
- SiまたはSn、及び炭素系物質の複合体負極活物質を含む負極;
LiCoO 2 からなる第1正極活物質90乃至99質量%及びLi 2 NiO 2 からなる第2正極活物質1乃至10質量%を含む混合正極活物質を含む正極;及び
非水系電解質;を含む、リチウム2次電池。 - 前記混合正極活物質は、前記第2正極活物質を3乃至5質量%及び前記第1正極活物質を97乃至95質量%で含む、請求項1に記載のリチウム2次電池。
- 前記リチウム2次電池は、正極容量に対する負極容量の比であるN/P比率が1.03乃至1.12である、請求項1に記載のリチウム2次電池。
- 前記正極、前記負極、及び前記正極及び前記負極の間に位置するセパレータを含む電極群にセパレータで囲まれたリチウム金属を対極として密着させ、前記正極、前記負極、及びリチウム金属対極にタップを付着させた後、これらを電池ケースで囲み、電解液を注液して形成された3電極系電極電位測定装置を使用して、測定した前記負極の電位が0.9V以下である、請求項1に記載のリチウム2次電池。
- 前記複合体負極活物質は、気孔が形成された結晶質炭素コア;前記結晶質炭素コアの表面に形成された非晶質炭素セル;前記気孔の内部に分散されているSiまたはSnのナノ粒子;及び前記気孔の内部に存在する非晶質炭素;を含む、請求項1に記載のリチウム2次電池。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090037725A KR101093705B1 (ko) | 2009-04-29 | 2009-04-29 | 리튬 이차 전지 |
KR10-2009-0037725 | 2009-04-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010262914A JP2010262914A (ja) | 2010-11-18 |
JP5289274B2 true JP5289274B2 (ja) | 2013-09-11 |
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Application Number | Title | Priority Date | Filing Date |
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JP2009247747A Active JP5289274B2 (ja) | 2009-04-29 | 2009-10-28 | リチウム2次電池 |
Country Status (5)
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---|---|
US (1) | US8597833B2 (ja) |
EP (1) | EP2246922B1 (ja) |
JP (1) | JP5289274B2 (ja) |
KR (1) | KR101093705B1 (ja) |
CN (1) | CN101877417B (ja) |
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