JP6688206B2 - 電極合剤層 - Google Patents
電極合剤層 Download PDFInfo
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- JP6688206B2 JP6688206B2 JP2016227010A JP2016227010A JP6688206B2 JP 6688206 B2 JP6688206 B2 JP 6688206B2 JP 2016227010 A JP2016227010 A JP 2016227010A JP 2016227010 A JP2016227010 A JP 2016227010A JP 6688206 B2 JP6688206 B2 JP 6688206B2
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- mixture layer
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- carbon nanotube
- carbon nanotubes
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- 239000000203 mixture Substances 0.000 title claims description 69
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 89
- 239000002041 carbon nanotube Substances 0.000 claims description 89
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 89
- 239000000835 fiber Substances 0.000 claims description 38
- 239000011149 active material Substances 0.000 claims description 31
- 239000007774 positive electrode material Substances 0.000 claims description 15
- 239000004020 conductor Substances 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 11
- 238000001000 micrograph Methods 0.000 claims description 4
- 239000007773 negative electrode material Substances 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 claims description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 17
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- 239000002033 PVDF binder Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 2
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- 229910004493 Li(Ni1/3Co1/3Mn1/3)O2 Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011255 nonaqueous electrolyte Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000000967 suction filtration Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000002482 conductive additive Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- YFVGRULMIQXYNE-UHFFFAOYSA-M lithium;dodecyl sulfate Chemical compound [Li+].CCCCCCCCCCCCOS([O-])(=O)=O YFVGRULMIQXYNE-UHFFFAOYSA-M 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 229910021392 nanocarbon Inorganic materials 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
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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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/158—Carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/158—Carbon nanotubes
- C01B32/16—Preparation
-
- 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
-
- 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
- H01M4/04—Processes of manufacture in general
-
- 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
-
- 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
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/76—Containers for holding the active material, e.g. tubes, capsules
-
- 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
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8875—Methods for shaping the electrode into free-standing bodies, like sheets, films or grids, e.g. moulding, hot-pressing, casting without support, extrusion without support
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/20—Nanotubes characterized by their properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/20—Nanotubes characterized by their properties
- C01B2202/32—Specific surface area
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/20—Nanotubes characterized by their properties
- C01B2202/34—Length
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/20—Nanotubes characterized by their properties
- C01B2202/36—Diameter
-
- 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
-
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Description
本実施例では、まず、水150mlに、直径0.8〜1.5nm、長さ150μmのカーボンナノチューブ(株式会社名城ナノカーボン製、商品名:EC−15)を0.7mg/ml、正極活物質としてのLi(Ni1/3Co1/3Mn1/3)O2を7.1mg/ml、分散剤としてのドデシル硫酸リチウムを20mg/mlの割合で投入し、超音波ホモジナイザーを用い50Wの出力で60分間処理することにより、1次分散液を調製した。前記1次分散液において、カーボンナノチューブと正極活物質との質量比は9:91である。
本実施例では、特開2016−031922号公報段落0053記載の製造方法に従って製造した直径10〜50nm、長さ100〜500μmのカーボンナノチューブを用いた以外は、実施例1と全く同一にして、正極活物質と、該正極活物質の表面に密着している前記カーボンナノチューブからなる導電体とからなる二次電池用正極側電極合剤層を得た。本実施例の電極合剤層表面の走査型電子顕微鏡写真を図2に示す。
本実施例では、直径8nm、長さ200〜300μmのカーボンナノチューブ(JEIO Co.,Ltd.製、商品名:JENO TUBE8)を用いた以外は、実施例1と全く同一にして、正極活物質と、該正極活物質の表面に密着している前記カーボンナノチューブからなる導電体とからなる二次電池用正極側電極合剤層を得た。本実施例の電極合剤層表面の走査型電子顕微鏡写真を図3に示す。
本実施例では、特開2016−132594号公報段落0032、0033記載の製造方法に従って製造した直径9nm、長さ750μmのカーボンナノチューブを用いた以外は、実施例1と全く同一にして、正極活物質と、該正極活物質の表面に密着している前記カーボンナノチューブからなる導電体及び3次元カーボンナノチューブ線維束骨格とからなる二次電池用正極側電極合剤層を得た。本実施例の電極合剤層表面の走査型電子顕微鏡写真を図4に示す。
本実施例では、直径9.5nm、長さ1.5μmのカーボンナノチューブ(Nanocyl SA製、商品名:NC7000)を用いた以外は、実施例1と全く同一にして、正極活物質と、該正極活物質の表面に密着している前記カーボンナノチューブからなる導電体とからなる二次電池用正極側電極合剤層を得た。本実施例の電極合剤層表面の走査型電子顕微鏡写真を図5に示す。
本比較例では、正極活物質としてのLi(Ni1/3Co1/3Mn1/3)O2と、導電助剤としてのカーボンブラックと、結着剤としてのポリフッ化ビニリデン樹脂(PVDF)とを、91:4.5:4.5の質量比で溶媒のN−メチル−2−ピロリドン(NMP)に分散させて、正極側電極合剤層用スラリーを調製した。前記正極側電極合剤層用スラリーを東洋アルミニウム株式会社製集電体に塗布し、乾燥させて正極側電極を作成した。
Claims (2)
- 活物質と、該活物質の表面に密着しているカーボンナノチューブ及び3次元カーボンナノチューブ線維束骨格からなる導電体とを有する電極合剤層であって、
前記カーボンナノチューブは0.8nm〜2.2μmの範囲の直径を備え、前記3次元カーボンナノチューブ線維束骨格は0.77〜2.2μmの範囲の直径を備えており、
該電極合剤層表面の走査型電子顕微鏡像中に縦横それぞれに0.3μm間隔で測定線を設け、該活物質の表面に密着して該測定線を横切る該カーボンナノチューブ又は3次元カーボンナノチューブ線維束骨格の総本数を計測し、該カーボンナノチューブ又は3次元カーボンナノチューブ線維束骨格の総本数を該活物質表面の該測定線の長さの合計で除した値として定義される、該活物質の表面に密着している該カーボンナノチューブ又は3次元カーボンナノチューブ線維束骨格の本数密度が4本/μm以上であることを特徴とする電極合剤層。 - 正極活物質を含む正極側電極合剤層と集電体とを備える正極と、
負極活物質を含む負極側電極合剤層と集電体とを備える負極と、
該正極と該負極とに挟持される電解質とを備える電池において、
該正極側電極合剤層と該負極側電極合剤層との少なくとも一方は、請求項1記載の電極合剤層であることを特徴とする電池。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2016227010A JP6688206B2 (ja) | 2016-11-22 | 2016-11-22 | 電極合剤層 |
US15/730,912 US10586989B2 (en) | 2016-11-22 | 2017-10-12 | Electrode mixture layer |
CN201711055062.2A CN108091823B (zh) | 2016-11-22 | 2017-11-01 | 电极合剂层和电池 |
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JP2016227010A JP6688206B2 (ja) | 2016-11-22 | 2016-11-22 | 電極合剤層 |
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JP2018085204A JP2018085204A (ja) | 2018-05-31 |
JP6688206B2 true JP6688206B2 (ja) | 2020-04-28 |
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JP2016227010A Expired - Fee Related JP6688206B2 (ja) | 2016-11-22 | 2016-11-22 | 電極合剤層 |
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US (1) | US10586989B2 (ja) |
JP (1) | JP6688206B2 (ja) |
CN (1) | CN108091823B (ja) |
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KR102259219B1 (ko) | 2018-07-03 | 2021-05-31 | 삼성에스디아이 주식회사 | 리튬 이차 전지 |
KR102259218B1 (ko) | 2018-07-03 | 2021-05-31 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 전극, 및 이를 포함하는 리튬 이차 전지 |
KR102323950B1 (ko) | 2018-12-12 | 2021-11-08 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 전극 및 이를 포함하는 리튬 이차 전지 |
KR102425515B1 (ko) | 2019-05-03 | 2022-07-25 | 삼성에스디아이 주식회사 | 리튬 이차 전지 |
KR102487628B1 (ko) | 2019-05-03 | 2023-01-12 | 삼성에스디아이 주식회사 | 리튬 이차 전지 |
KR102492832B1 (ko) * | 2019-05-03 | 2023-01-26 | 삼성에스디아이 주식회사 | 리튬 이차 전지 |
KR102492831B1 (ko) | 2019-05-03 | 2023-01-26 | 삼성에스디아이 주식회사 | 리튬 이차 전지 |
KR102425513B1 (ko) | 2019-05-03 | 2022-07-25 | 삼성에스디아이 주식회사 | 리튬 이차 전지 |
KR102425514B1 (ko) | 2019-05-03 | 2022-07-25 | 삼성에스디아이 주식회사 | 리튬 이차 전지 |
WO2021106592A1 (ja) * | 2019-11-29 | 2021-06-03 | 三洋電機株式会社 | 非水電解質二次電池用電極板及び非水電解質二次電池 |
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JP5885984B2 (ja) * | 2011-09-30 | 2016-03-16 | 三菱マテリアル株式会社 | 電極形成材と該電極形成材を用いた電極の製造方法 |
JP5573980B2 (ja) * | 2012-01-24 | 2014-08-20 | ダイキン工業株式会社 | 結着剤、正極合剤及び負極合剤 |
IN2015DN00746A (ja) * | 2012-08-02 | 2015-07-10 | Toyota Motor Co Ltd | |
WO2014033810A1 (ja) * | 2012-08-27 | 2014-03-06 | 株式会社名城ナノカーボン | カーボンナノチューブ分散液及び当該分散液の製造方法 |
DE102013213273A1 (de) * | 2013-02-22 | 2014-08-28 | Bayer Materialscience Aktiengesellschaft | Kohlenstoffnanoröhren-haltige Dispersion und ihre Verwendung in der Herstellung von Elektroden |
JP2014220328A (ja) * | 2013-05-07 | 2014-11-20 | 住友電気工業株式会社 | 蓄電デバイス用電極、蓄電デバイスおよび蓄電デバイス用電極の製造方法 |
WO2015092957A1 (ja) * | 2013-12-16 | 2015-06-25 | 株式会社アルバック | リチウム硫黄二次電池用の正極及びその形成方法 |
CN104810524B (zh) * | 2014-01-23 | 2018-04-03 | 清华大学 | 锂离子电池 |
WO2016003532A1 (en) * | 2014-06-30 | 2016-01-07 | University Of Southern California | Free-standing active material/carbon nanomaterial network |
JP2016031922A (ja) | 2014-07-30 | 2016-03-07 | 本田技研工業株式会社 | 電池用電極兼集電体およびそれを備えた電池 |
CN204118182U (zh) * | 2014-09-05 | 2015-01-21 | 南京中储新能源有限公司 | 一种碳硫复合正极和二次铝电池 |
CN104934610B (zh) * | 2015-05-06 | 2017-11-10 | 南昌航空大学 | 一种锂离子电池用自支撑柔性复合电极材料制备方法 |
CN105529445A (zh) * | 2015-12-25 | 2016-04-27 | 苏州格瑞动力电源科技有限公司 | 一种锂离子电池的负极 |
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