发明公开
- 专利标题： CARBONACEOUS MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY NEGATIVE ELECTRODE, NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NON-AQUEOUS ELECTRODE SECONDARY BATTERY, AND VEHICLE
- 专利标题（中）： 含碳材料与水游离电解液，负极与水无电解质和二次电池免费水电解质及车辆二次电池二次电池的负极
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申请号： EP15774007.7申请日： 2015-03-27
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公开(公告)号： EP3136482A1公开(公告)日： 2017-03-01
- 发明人: IMAJI, Makoto , OKADA, Kayoko , TADA, Yasuhiro , SONOBE, Naohiro , KOMATSU, Mayu
- 申请人： Kureha Corporation
- 申请人地址： 3-3-2, Nihonbashi-Hamacho Chuo-ku Tokyo 103-8552 JP
- 专利权人： Kureha Corporation
- 当前专利权人： Kureha Corporation
- 当前专利权人地址： 3-3-2, Nihonbashi-Hamacho Chuo-ku Tokyo 103-8552 JP
- 代理机构： Zimmermann & Partner Patentanwälte mbB
- 优先权： JP2014074972 20140331
- 国际公布： WO2015152088 20151008
- 主分类号： H01M4/587
- IPC分类号： H01M4/587
摘要：
Provided is a carbonaceous material for a non-aqueous electrolyte secondary battery anode having high discharge capacity per unit volume and excellent storage characteristics.
The carbonaceous material for a non-aqueous electrolyte secondary battery anode of the present invention has a true density (ρ Bt ) determined by a pycnometer method using butanol of not less than 1.55 g/cm 3 and less than 1.75 g/cm 3 and a discharge capacity of an anode at 0.05 V to 1.5 V in terms of a lithium reference electrode standard of not less than 180 mAh/g. Furthermore, the slope 0.9/X (Vg/Ah) of a discharge curve calculated from a discharge capacity X (Ah/g) and a potential difference of 0.9 (V) corresponding to 0.2 V to 1.1 V in terms of a lithium reference electrode standard is not greater than 0.75 (Vg/Ah), and an absorbed moisture quantity after storage for 100 hours in a 25°C 50% RH air atmosphere is not greater than 1.5 wt%.
The carbonaceous material for a non-aqueous electrolyte secondary battery anode of the present invention has a true density (ρ Bt ) determined by a pycnometer method using butanol of not less than 1.55 g/cm 3 and less than 1.75 g/cm 3 and a discharge capacity of an anode at 0.05 V to 1.5 V in terms of a lithium reference electrode standard of not less than 180 mAh/g. Furthermore, the slope 0.9/X (Vg/Ah) of a discharge curve calculated from a discharge capacity X (Ah/g) and a potential difference of 0.9 (V) corresponding to 0.2 V to 1.1 V in terms of a lithium reference electrode standard is not greater than 0.75 (Vg/Ah), and an absorbed moisture quantity after storage for 100 hours in a 25°C 50% RH air atmosphere is not greater than 1.5 wt%.
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