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1.发明申请公开(公告)号：US20170373307A1
公开(公告)日：2017-12-28
申请号：US15623399
申请日：2017-06-15
Inventor： DAISUKE KATOU , KENICHI HOTEHAMA , JUNKO MATSUSHITA
Abstract: A negative electrode material for a non-aqueous electrolyte secondary battery includes a plurality of composite particles. Each of the plurality of composite particles includes an inorganic particle, one or more covering layers, each of which is in contact with a surface of the inorganic particle, and a carbonaceous material layer that covers the inorganic particle and has voids. The carbonaceous material layer includes a first region having a porosity of 4.3% or more and 10.0% or less, the first region being a region extending from the surface of the inorganic particle to the surface of an imaginary sphere that is centered at the center of the inorganic particle and has a radius of 3r, where r is a radius of the inorganic particle. Each of the voids is separated by one of the one or more covering layers from the surface of the inorganic particle.
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2.发明申请公开(公告)号：US20170373308A1
公开(公告)日：2017-12-28
申请号：US15623415
申请日：2017-06-15
Inventor： DAISUKE KATOU , KENICHI HOTEHAMA
CPC classification number: H01M4/366 , H01M4/0471 , H01M4/133 , H01M4/134 , H01M4/1393 , H01M4/1395 , H01M4/386 , H01M4/583 , H01M4/587 , H01M4/625 , H01M10/052 , H01M2004/021 , H01M2004/027 , H01M2220/30
Abstract: A negative electrode material for a non-aqueous electrolyte secondary battery includes a plurality of composite particles. Each of the plurality of composite particles includes an inorganic particle and a carbonaceous material layer that covers the inorganic particle. The carbonaceous material layer includes a first region having a porosity of 4.7% or more and 34.8% or less, the first region being a region extending from the surface of the inorganic particle to the surface of an imaginary sphere that is centered at the center of the inorganic particle and has a radius of 3r, where r is a radius of the inorganic particle.
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