JP2010287557A - リチウム二次電池用負極活物質及びそれを用いた車載用リチウム二次電池 - Google Patents
リチウム二次電池用負極活物質及びそれを用いた車載用リチウム二次電池 Download PDFInfo
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
【解決手段】石炭系及び又は石油系(以下、石炭系等という)生コークス及び前記石炭系等か焼コークスが、重量比で90:10〜10:90に配合されたコークス材料を、焼成してなることを特徴とするリチウム二次電池負極活物質。
【選択図】なし
Description
すなわち、この様な出力特性、放電容量、初期効率、容量維持率等の特性をバランス良く高めることが要求される。
石炭系重質油よりキノリン不溶分を除去した精製ピッチを用い、ディレードコーキング法によって500℃の温度で24時間熱処理して製造した塊状コークス(生コークス)を得、ジェットミルにて微粉砕及び整粒し、平均粒径が9.9μmの生コークス片(微粉砕生コークス)を得た。
実施例1において、生コークス粉及びか焼コークス粉の配合比を重量で70:30からそれぞれ50:50(実施例2)、及び30:70(実施例3)に変更した以外は、実施例1と同様の操作を行い、リチウム二次電池を得た。また、実施例1と同様にして放電特性を調べた。結果を表1に示す。
生コークス粉100重量部(か焼コークス粉を配合しない)のコークス材料を使用し、実施例1と同様の操作を行い、リチウム二次電池を得た。また、実施例1と同様にして放電特性を調べた。結果を表1に示す。
か焼コークス粉100重量部(生コークス粉を配合しない)のコークス材料を使用し、実施例1と同様の操作を行い、リチウム二次電池を得た。また、実施例1と同様にして放電特性を調べた。結果を表1に示す。
実施例1〜3において、コークス材料の焼成温度(最高到達温度)を900℃から1000℃に変更した以外は、それぞれ実施例1〜3と同様の操作を行い、リチウム二次電池を得た。また、実施例1と同様にして放電特性を調べた。結果を表1に示す。
生コークス粉100重量部(か焼コークス粉を配合しない)のコークス材料を使用し、実施例4と同様の操作を行い、リチウム二次電池を得た。また、実施例1と同様にして放電特性を調べた。結果を表1に示す。
か焼コークス粉100重量部(生コークス粉を配合しない)のコークス材料を使用し、実施例4と同様の操作を行い、リチウム二次電池を得た。また、実施例1と同様にして放電特性を調べた。結果を表1に示す。
実施例1〜3において、コークス材料の焼成温度(最高到達温度)を900℃から1100℃に変更した以外は、それぞれ実施例1〜3と同様の操作を行い、リチウム二次電池を得た。また、実施例1と同様にして放電特性を調べた。結果を表1に示す。
生コークス粉100重量部(か焼コークス粉を配合しない)のコークス材料を使用し、実施例7と同様の操作を行い、リチウム二次電池を得た。また、実施例1と同様にして放電特性を調べた。結果を表1に示す。
か焼コークス粉100重量部(生コークス粉を配合しない)のコークス材料を使用し、実施例7と同様の操作を行い、リチウム二次電池を得た。また、実施例1と同様にして放電特性を調べた。結果を表1に示す。
負極電極箔を作製する際に用いるバインダーをポリフッ化ビニリデンからポリイミド樹脂(宇部興産社製)に代えた以外は、実施例2と同様にしてリチウム二次電池を作製した。また、実施例1と同様にして放電特性を調べた。結果を表2に示す。なお、比較のため、実施例2に関する結果も併せて表2に示す。
負極電極箔を作製する際に用いるバインダーをポリフッ化ビニリデンからポリイミド樹脂(宇部興産社製)に代えた以外は、実施例5と同様にしてリチウム二次電池を作製した。また、実施例1と同様にして放電特性を調べた。結果を表2に示す。なお、比較のため、実施例5に関する結果も併せて表2に示す。
負極電極箔を作製する際に用いるバインダーをポリフッ化ビニリデンからポリイミド樹脂(宇部興産社製)に代えた以外は、実施例8と同様にしてリチウム二次電池を作製した。また、実施例1と同様にして放電特性を調べた。結果を表2に示す。なお、比較のため、実施例8に関する結果も併せて表2に示す。
Claims (6)
- 石炭系及び又は石油系(以下、石炭系等という)生コークス及び前記石炭系等か焼コークスが、重量比で90:10〜10:90に配合されたコークス材料を、焼成してなることを特徴とするリチウム二次電池負極活物質。
- 前記生コークス及びか焼コークスが粉砕された粉末状であることを特徴とする請求項1記載のリチウム二次電池負極活物質。
- 前記石炭系等生コークスと前記石炭系等か焼コークスとの配合比が、重量比で70:30〜30:70であることを特徴とする、請求項1又は2に記載のリチウム二次電池負極活物質。
- 前記焼成は、800℃〜1400℃の温度で実施することを特徴とする、請求項1〜3のいずれか一に記載のリチウム二次電池負極活物質。
- 請求項1〜4のいずれか一に記載のリチウム二次電池負極活物質を用いた車載用二次電池。
- ハイブリッド自動車、電気自動車用途であることを特徴とする請求項5記載の車載用二次電池。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009266764A JP5603589B2 (ja) | 2009-05-15 | 2009-11-24 | リチウム二次電池用負極活物質及びそれを用いた車載用リチウム二次電池 |
CN201080022273.6A CN102428595B (zh) | 2009-05-15 | 2010-05-13 | 锂二次电池用负极活性物质、锂二次电池用负极电极、使用它们的车载用锂二次电池、以及锂二次电池用负极活性物质的制造方法 |
KR1020117029921A KR101840054B1 (ko) | 2009-05-15 | 2010-05-13 | 리튬 이차전지용 음극 활물질, 리튬 이차전지용 음극 전극, 그들을 이용한 차량 탑재용 리튬 이차전지, 및 리튬 이차전지용 음극 활물질의 제조방법 |
US13/319,402 US9806342B2 (en) | 2009-05-15 | 2010-05-13 | Negative electrode active material of lithium secondary battery, negative electrode of lithium secondary battery, lithium secondary battery for vehicle installation using the negative electrode active material and negative electrode, and method for manufacturing the negative electrode active material |
PCT/JP2010/003249 WO2010131473A1 (ja) | 2009-05-15 | 2010-05-13 | リチウム二次電池用負極活物質、リチウム二次電池用負極電極、それらを用いた車載用リチウム二次電池、及びリチウム二次電池用負極活物質の製造方法 |
EP10774732.1A EP2432052B1 (en) | 2009-05-15 | 2010-05-13 | Anode active material for lithium secondary batteries, anode electrode for lithium secondary batteries, in-vehicle lithium secondary battery using said anode active material and anode electrode, and method for manufacturing an anode active material for lithium secondary batteries |
TW099115300A TWI520419B (zh) | 2009-05-15 | 2010-05-13 | A negative electrode active material for a lithium battery, a negative electrode electrode for a lithium secondary battery, a lithium battery for a vehicle for use, and a method for producing a negative electrode active material for a lithium battery |
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JP2009118854 | 2009-05-15 | ||
JP2009118854 | 2009-05-15 | ||
JP2009266764A JP5603589B2 (ja) | 2009-05-15 | 2009-11-24 | リチウム二次電池用負極活物質及びそれを用いた車載用リチウム二次電池 |
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JP2010287557A true JP2010287557A (ja) | 2010-12-24 |
JP5603589B2 JP5603589B2 (ja) | 2014-10-08 |
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JP2009266764A Active JP5603589B2 (ja) | 2009-05-15 | 2009-11-24 | リチウム二次電池用負極活物質及びそれを用いた車載用リチウム二次電池 |
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US (1) | US9806342B2 (ja) |
EP (1) | EP2432052B1 (ja) |
JP (1) | JP5603589B2 (ja) |
KR (1) | KR101840054B1 (ja) |
CN (1) | CN102428595B (ja) |
TW (1) | TWI520419B (ja) |
WO (1) | WO2010131473A1 (ja) |
Cited By (1)
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WO2011068097A1 (ja) * | 2009-12-02 | 2011-06-09 | 新日鐵化学株式会社 | 二次電池用負極及びこれを用いた二次電池 |
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CN109314242B (zh) * | 2016-06-15 | 2022-02-11 | 罗伯特·博世有限公司 | 负极组合物、制备负极的方法及锂离子电池 |
CN110718690B (zh) * | 2018-07-12 | 2022-07-12 | 宝武碳业科技股份有限公司 | 一种基于针状焦生焦和煅后焦的电池负极材料的制备方法 |
KR102141060B1 (ko) * | 2018-09-28 | 2020-08-04 | 주식회사 포스코 | 리튬 이차전지용 음극 활물질의 전구체, 이의 제조방법 |
KR20220057715A (ko) * | 2020-10-30 | 2022-05-09 | 주식회사 엘지에너지솔루션 | 리튬 이차전지용 음극 활물질, 음극 및 리튬 이차전지 |
US20240110104A1 (en) * | 2021-01-26 | 2024-04-04 | Arq Ip Limited | Improved binder pitch for use in carbon composite materials |
TWI816598B (zh) * | 2022-11-03 | 2023-09-21 | 台灣中油股份有限公司 | 負極碳材的製法及其鋰離子二次電池 |
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- 2010-05-13 KR KR1020117029921A patent/KR101840054B1/ko active IP Right Grant
- 2010-05-13 EP EP10774732.1A patent/EP2432052B1/en not_active Not-in-force
- 2010-05-13 WO PCT/JP2010/003249 patent/WO2010131473A1/ja active Application Filing
- 2010-05-13 US US13/319,402 patent/US9806342B2/en active Active
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Also Published As
Publication number | Publication date |
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JP5603589B2 (ja) | 2014-10-08 |
CN102428595A (zh) | 2012-04-25 |
EP2432052A1 (en) | 2012-03-21 |
EP2432052B1 (en) | 2018-06-27 |
US20120112126A1 (en) | 2012-05-10 |
CN102428595B (zh) | 2016-01-27 |
KR101840054B1 (ko) | 2018-03-19 |
WO2010131473A1 (ja) | 2010-11-18 |
TWI520419B (zh) | 2016-02-01 |
US9806342B2 (en) | 2017-10-31 |
EP2432052A4 (en) | 2014-01-22 |
KR20120028920A (ko) | 2012-03-23 |
TW201108495A (en) | 2011-03-01 |
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