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公开(公告)号：EP2695857A4
公开(公告)日：2014-09-17
申请号：EP12768047
申请日：2012-04-03
IPC分类号： C01B31/04 , H01M4/133 , H01M4/1393 , H01M4/36 , H01M4/587 , H01M4/62 , H01M4/66 , H01M10/052
CPC分类号： H01M4/587 , C01B32/20 , C01P2006/10 , C01P2006/11 , C01P2006/19 , H01M4/133 , H01M4/366 , H01M10/052
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2.发明公开NEGATIVE ELECTRODE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF 有权负极材料用于生产与水电解质及处理FREE ACC
公开(公告)号：EP2518800A4
公开(公告)日：2014-07-30
申请号：EP10839573
申请日：2010-12-24
发明人： NEGI NORIYUKI , NAGATA TATSUO , SAGUCHI AKIHIKO
CPC分类号： H01M4/38 , B22F2998/00 , C22C1/0483 , C22C1/10 , C22C13/00 , H01M4/134 , H01M4/364 , H01M4/387 , H01M10/052 , B22F9/04
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3.发明公开ANODE MATERIAL OF NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PRODUCING SAME 审中-公开ANODENMATERIALFÜREINESEKUNDÄRBATTERIEMITNICHTWÄSSRIGEMELEKTROLYT UND VERFAHREN ZU SEINER HERSTELLUNG
公开(公告)号：EP2562853A4
公开(公告)日：2013-12-18
申请号：EP11772124
申请日：2011-04-25
发明人： NEGI NORIYUKI , NAGATA TATSUO , YAMAMOTO SUKEYOSHI
IPC分类号： H01M4/38 , C22C1/00 , C22C13/00 , H01M4/134 , H01M4/1395 , H01M4/36 , H01M4/62 , H01M10/0525
CPC分类号： H01M4/364 , C22C1/00 , C22C13/00 , H01M4/134 , H01M4/1395 , H01M4/38 , H01M4/387 , H01M4/622 , H01M4/625 , H01M10/0525 , Y02E60/122 , Y02P70/54
摘要： A negative electrode material according to the present invention which is provided as an inexpensive negative electrode material for a nonaqueous electrolyte secondary battery and which suppresses the amount of expensive Co which is used contains three types of powder materials in the form of alloy material A, alloy material B, and a conductive material. Alloy material A comprises an alloy having a CoSn 2 structure containing Co, Sn, and Fe and having an Sn content of at least 70.1 mass% and less than 82.0 mass%. Alloy material B comprises Co 3 Sn 2 and has a lower discharge capacity than alloy material A, and the proportion R B of the mass of alloy material B based on the total mass of alloy material A and alloy material B is greater than 5.9% and less than 27.1 %. The content of the conductive material is at least 7 mass% and at most 20 mass% based on the total mass of alloy material A, alloy material B, and the conductive material. The exotherm starting temperature determined by differential scanning calorimetry for this negative electrode material is less than 375.4° C.
摘要翻译： 作为廉价的非水电解质二次电池用负极材料而提供的本发明的负极材料，通过抑制所使用的昂贵的Co的量，含有三种合金材料A，合金 材料B和导电材料。 合金材料A包含具有包含Co，Sn和Fe的CoSn 2结构并且具有至少70.1质量％且小于82.0质量％的Sn含量的合金。 合金材料B包含Co 3 Sn 2并具有比合金材料A更低的放电容量，并且合金材料B的质量基于合金材料A和合金材料B的总质量的比例RB大于5.9％且小于 比27.1％。 基于合金材料A，合金材料B和导电材料的总质量，导电材料的含量为至少7质量％并且至多20质量％。 通过差示扫描量热法测定的该负极材料的放热开始温度低于375.4℃
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公开(公告)号：EP2554515A4
公开(公告)日：2016-01-20
申请号：EP11765477
申请日：2011-03-28
发明人： YAMAMOTO HIROSHI , NAGATA TATSUO , NISHIHARA KATSUHIRO , NEGI NORIYUKI , YAUCHI AKIHIRO , FUJIWARA TOORU
CPC分类号： H01M4/133 , C01B32/20 , C01P2006/10 , C01P2006/11 , C01P2006/19 , H01M4/0402 , H01M4/1393 , H01M4/587
摘要： Modified natural graphite particles intended for forming a negative electrode material for a nonaqueous electrolyte secondary battery are characterized by having a circularity of at least 0.93 and at most 1.0 and a surface roughness of at most 1.5% with respect to the length of the particles. These modified natural graphite particles are obtained by a manufacturing method including a step of applying an impact force to natural graphite particles for pulverization and spheroidization to obtain intermediate particles having a circularity of at least 0.93 and at most 1.0, and a step of carrying out surface smoothing of the resulting intermediate particles by mechanical grinding treatment to obtain the modified natural graphite particles.
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