发明授权
- 专利标题： Carbonaceous material for negative electrodes of lithium ion capacitors and method for producing same
- 专利标题（中）： 锂离子电容器用负极碳质材料及其制造方法
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申请号： US14424676申请日： 2013-08-30
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公开(公告)号： US09508494B2公开(公告)日： 2016-11-29
- 发明人: Naohiro Sonobe , Yasuhiro Tada , Jiro Masuko , Hajime Komatsu , Junichi Arima , Akimi Ogawa , Kenichi Koyakumaru , Kiyoto Otsuka , Hideharu Iwasaki , Junsang Cho
- 申请人： KUREHA CORPORATION , KURARAY CO., LTD. , KURARAY CHEMICAL CO., LTD.
- 申请人地址： JP Tokyo JP Kurashiki-Shi, Okayama JP Bizen-Shi, Okayama
- 专利权人： KUREHA CORPORATION,KURARAY CO., LTD.,KURARAY CHEMICAL CO., LTD.
- 当前专利权人： KUREHA CORPORATION,KURARAY CO., LTD.,KURARAY CHEMICAL CO., LTD.
- 当前专利权人地址： JP Tokyo JP Kurashiki-Shi, Okayama JP Bizen-Shi, Okayama
- 代理机构： Birch, Stewart, Kolasch & Birch, LLP
- 优先权： JP2012-190708 20120830
- 国际申请： PCT/JP2013/073350 WO 20130830
- 国际公布： WO2014/034859 WO 20140306
- 主分类号： C01B31/00
- IPC分类号： C01B31/00 ; H01G11/50 ; H01G11/34 ; H01M4/587 ; C01B31/02 ; H01G11/42 ; H01G11/66 ; H01M10/0525 ; H01G11/24 ; H01G11/44
摘要：
The object of the present invention is to provide a manufacturing method of carbonaceous material for a negative electrode of lithium ion capacitors, wherein the carbonaceous material is obtained from plant-derived char as a source, potassium and iron are sufficiently removed, and an average particle diameter thereof is small; and a carbonaceous material for a negative electrode of lithium ion capacitors.The object can be solved by a method for manufacturing a carbonaceous material having an average diameter of 3 to 30 μm, for a negative electrode of lithium ion capacitors comprising the steps of: (1) heating plant-derived char having an average particle diameter of 100 to 10000 μm at 500° C. to 1250° C. under an inert gas atmosphere containing a halogen compound to demineralize in a gas-phase, (2) pulverizing a carbon precursor obtained by the demineralization in a gas-phase, (3) calcining the pulverized carbon precursor at less than 1100° C. under a non-oxidizing gas atmosphere.