公开(公告)号：US09312532B2

公开(公告)日：2016-04-12

申请号：US13991529

申请日：2011-12-06

申请人： Tatsuo Umeno ,  Tadanori Tsunawaki ,  Koutarou Mizuma ,  Shinya Okabe ,  Shiroh Oie

发明人： Tatsuo Umeno ,  Tadanori Tsunawaki ,  Koutarou Mizuma ,  Shinya Okabe ,  Shiroh Oie

IPC分类号： H01M4/13 ,  H01M4/04 ,  H01M4/36 ,  H01M4/587 ,  H01M4/583 ,  C04B35/52 ,  C04B35/532 ,  C04B35/628 ,  H01M4/133 ,  H01M10/0525 ,  H01M4/02

CPC分类号： H01M4/0407 ,  C04B35/522 ,  C04B35/532 ,  C04B35/62839 ,  C04B2235/425 ,  C04B2235/528 ,  C04B2235/5436 ,  H01M4/133 ,  H01M4/366 ,  H01M4/583 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/021 ,  Y02T10/7011

摘要： A negative electrode material for lithium ion secondary batteries comprises amorphous coated particles that are composed of a plurality of consolidated particles having no specific shape, said consolidated particles being obtained by consolidating a plurality of primary spheroidized graphite particles, and 0.5-20% by mass of an amorphous carbon layer that covers the surfaces of the consolidated particles and binds the consolidated particles with each other; and 0.5-20% by mass of a highly crystalline carbon layer that is formed so as to cover the outer surfaces of the amorphous coated particles and has an interplanar distance ascribed to CVD processing of 0.335 nm or more but less than 0.3369 nm. The negative electrode material for lithium ion secondary batteries is also characterized by having a porosity of 5% by volume or less, and a method for producing the negative electrode material for lithium ion secondary batteries.

摘要翻译： 锂离子二次电池用负极材料包括由多个没有特定形状的固结颗粒构成的无定形涂布颗粒，所述固化颗粒通过固化多个初级球状石墨颗粒和0.5-20质量％ 覆盖固结颗粒的表面并将固结颗粒彼此结合的无定形碳层; 和0.5-20质量％的高度结晶的碳层，其形成为覆盖非晶涂覆颗粒的外表面，并且具有归因于CVD加工的面间距离为0.335nm以上且小于0.3369nm。 锂离子二次电池用负极材料的特征还在于具有5体积％以下的孔隙率，以及锂离子二次电池用负极材料的制造方法。

公开(公告)号：US20130309578A1

公开(公告)日：2013-11-21

申请号：US13991529

申请日：2011-12-06

申请人： Tatsuo Umeno ,  Tadanori Tsunawaki ,  Koutarou Mizuma ,  Shinya Okabe ,  Shiroh Oie

发明人： Tatsuo Umeno ,  Tadanori Tsunawaki ,  Koutarou Mizuma ,  Shinya Okabe ,  Shiroh Oie

IPC分类号： H01M4/04 ,  H01M4/583

CPC分类号： H01M4/0407 ,  C04B35/522 ,  C04B35/532 ,  C04B35/62839 ,  C04B2235/425 ,  C04B2235/528 ,  C04B2235/5436 ,  H01M4/133 ,  H01M4/366 ,  H01M4/583 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/021 ,  Y02T10/7011

摘要： A negative electrode material for lithium ion secondary batteries comprises amorphous coated particles that are composed of a plurality of consolidated particles having no specific shape, said consolidated particles being obtained by consolidating a plurality of primary spheroidized graphite particles, and 0.5-20% by mass of an amorphous carbon layer that covers the surfaces of the consolidated particles and binds the consolidated particles with each other; and 0.5-20% by mass of a highly crystalline carbon layer that is formed so as to cover the outer surfaces of the amorphous coated particles and has an interplanar distance ascribed to CVD processing of 0.335 nm or more but less than 0.3369 nm. The negative electrode material for lithium ion secondary batteries is also characterized by having a porosity of 5% by volume or less, and a method for producing the negative electrode material for lithium ion secondary batteries.

摘要翻译： 锂离子二次电池用负极材料包括由多个没有特定形状的固结颗粒构成的无定形涂布颗粒，所述固化颗粒通过固化多个初级球状石墨颗粒和0.5-20质量％ 覆盖固结颗粒的表面并将固结颗粒彼此结合的无定形碳层; 和0.5-20质量％的高度结晶的碳层，其形成为覆盖非晶涂覆颗粒的外表面，并且具有归因于CVD加工的面间距离为0.335nm以上且小于0.3369nm。 锂离子二次电池用负极材料的特征还在于具有5体积％以下的孔隙率，以及锂离子二次电池用负极材料的制造方法。