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公开(公告)号：US10559813B2
公开(公告)日：2020-02-11
申请号：US15565006
申请日：2016-04-05
发明人： Atsushi Saito , Tatsuya Eguchi , Manabu Miyoshi , Jun Kaneda , Tomokuni Abe , Hiroki Oshima
IPC分类号： H01M4/134 , H01M4/587 , H01M4/36 , H01M4/62 , H01M4/133 , H01M4/38 , H01M10/0525 , H01M10/052 , H01M4/02
摘要： The negative electrode includes a current collector, a negative electrode active material layer arranged on a surface of the current collector, and a protective layer arranged on a surface of the negative electrode active material layer. The negative electrode active material layer includes a first negative electrode active material having an aspect ratio defined as “a”/“b” to fall in a range of from two or more to eight or less when a length of the major axis is defined “a” and a length of the minor axis is defined “b.” The protective layer includes a ceramic powder.
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公开(公告)号：US10476073B2
公开(公告)日：2019-11-12
申请号：US15506825
申请日：2015-08-04
IPC分类号： H01M4/36 , H01M4/38 , H01M4/587 , H01M10/0525 , C01B33/021 , B01J13/04 , C01B32/05 , H01M4/02
摘要： A production process for carbon-coated silicon material includes the step of: heating CaSi2 and a halogen-containing polymer at a temperature being a carbonization temperature or more of the halogen-containing polymer in a state where the CaSi2 and the halogen-containing polymer coexist.
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公开(公告)号：US09685660B2
公开(公告)日：2017-06-20
申请号：US14777584
申请日：2014-09-10
发明人： Hiroki Oshima , Kanae Suzuki , Takeshi Maki
IPC分类号： H01M4/36 , H01M10/05 , H01M4/131 , H01M4/1391 , H01M4/66 , H01M4/04 , H01M4/505 , H01M4/525 , H01M4/62 , H01M10/0525 , H01M10/42
CPC分类号： H01M4/366 , H01M4/0404 , H01M4/0416 , H01M4/131 , H01M4/1391 , H01M4/505 , H01M4/525 , H01M4/62 , H01M4/622 , H01M4/623 , H01M4/625 , H01M4/661 , H01M10/0525 , H01M10/4235 , Y02P70/54
摘要： A positive electrode for lithium-ion secondary battery is provided, the positive electrode being able to endure high-temperature and high-voltage driving modes or operations. At least parts of the surface of positive-electrode active-material particles are covered by a polymer coating layer, and an amino group and phosphoric-acid group are included in the polymer coating layer. Since the polymer coating layer includes a phosphoric-acid-based polymer, capacity declines are inhibited at the time of cycle tests.
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4.发明申请公开(公告)号：US20150118551A1
公开(公告)日：2015-04-30
申请号：US14396835
申请日：2013-04-25
发明人： Hiroki Oshima , Takeshi Maki
IPC分类号： H01M4/62 , H01M4/139 , H01M4/04 , H01M4/13 , H01M10/0525
CPC分类号： H01M4/628 , H01M4/0404 , H01M4/13 , H01M4/131 , H01M4/139 , H01M4/1391 , H01M4/366 , H01M4/62 , H01M4/622 , H01M10/0525 , H01M10/4235 , H01M2004/028
摘要： A positive electrode active material layer comprises a coating layer for coating at least part of surfaces of positive electrode active material particles. The coating layer comprises alternate layers of a cationic material layer containing a cationic material having a positive zeta potential and an anionic material layer containing an anionic material having a negative zeta potential under neutral conditions, and a material layer having a zeta potential of opposite sign to that of the positive electrode active material particles is bonded to the surfaces of the positive electrode active material particles. The coating layer is thin and uniform, and has a high strength for bonding to the positive electrode active material particles, so the coating layer suppresses direct contact of the positive electrode active material particles and an electrolytic solution even when a nonaqueous secondary battery is used at a high voltage.
摘要翻译： 正极活性物质层包括用于涂覆正极活性物质粒子的至少一部分表面的被覆层。 涂层包含含有阳离子材料的阳离子材料层的交替层，所述阳离子材料层具有正的ζ电位，阴离子材料层含有在中性条件下具有负ζ电位的阴离子材料，并且具有ζ电位相反的材料层 正极活性物质粒子的正极活性物质粒子的表面粘合。 涂层薄且均匀，并且与正极活性物质颗粒接合的强度高，因此即使在使用非水系二次电池的情况下，涂层也能够抑制正极活性物质粒子和电解液的直接接触 高电压。
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5.发明申请公开(公告)号：US20140242458A1
公开(公告)日：2014-08-28
申请号：US14179068
申请日：2014-02-12
发明人： Tomokuni ABE , Hiroki Oshima , Yuya Sato , Kisena Yoshida , Nobuhiro Goda , Manabu Miyoshi
IPC分类号： H01M4/36 , H01M4/1391 , H01M4/04 , H01M4/60 , H01M4/48
CPC分类号： H01M4/366 , H01M4/0404 , H01M4/1391 , H01M4/48 , H01M4/602 , Y02E60/122 , Y02P70/54
摘要： Provided is a negative electrode for a nonaqueous secondary battery which achieves both suppression of reductive decomposition of an electrolyte or an electrolytic solution and suppression of an increase in resistance. Also provided are a method for producing such a negative electrode and a nonaqueous secondary battery employing such a negative electrode. A polymer coating layer is formed so as to coat at least part of surfaces of negative electrode active material particles containing silicon oxide (SiOx; 0.5≦x≦1.6). The polymer coating layer contains a cationic polymer having a positive zeta potential under neutral conditions. Since silicon oxide has a negative zeta potential, a thin uniform coating layer can be formed owing to Coulomb's force.
摘要翻译： 本发明提供一种能够抑制电解质或电解液的还原分解，抑制电阻增加的非水系二次电池用负极。 还提供了这种负极的制造方法和使用这种负极的非水二次电池。 形成聚合物涂层，以便涂覆含有氧化硅的负极活性物质颗粒的表面的至少一部分（SiOx; 0.5＆amp; NlE; x＆nlE; 1.6）。 聚合物涂层含有在中性条件下具有正ζ电位的阳离子聚合物。 由于氧化硅具有负ζ电位，所以由于库仑力可以形成薄均匀的涂层。
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公开(公告)号：US10446838B2
公开(公告)日：2019-10-15
申请号：US15115320
申请日：2014-08-27
发明人： Takeshi Kondo , Yusuke Sugiyama , Takashi Mohri , Hiroki Oshima , Tomohiro Niimi , Mutsumi Takahashi , Nobuhiro Goda , Takahiro Sugioka , Yuta Kawamoto
IPC分类号： H01M4/36 , H01M4/133 , H01M4/66 , H01M4/134 , H01M4/38 , H01M10/0525 , H01M4/587 , H01M10/052 , H01M4/02
摘要： Cycle characteristics of a nonaqueous secondary battery are to be improved.An active material including: a first active material that contains a nano silicon produced by heating a layered polysilane represented by a composition formula (SiH)n and having a structure in which multiple six-membered rings formed from silicon atoms are connected; and a second active material that contains a graphite, is used in a negative electrode. With this, expansion and contraction due to stress during charging and discharging can be mitigated, and thereby cycle characteristics improve.
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7.发明授权公开(公告)号：US10347910B2
公开(公告)日：2019-07-09
申请号：US15314369
申请日：2015-05-26
发明人： Takeshi Kondo , Yusuke Sugiyama , Nobuhiro Goda , Takashi Mohri , Hiroki Oshima , Masataka Nakanishi
IPC分类号： H01M4/38 , H01M4/48 , C01B33/08 , H01M10/052 , C01B33/021 , B82Y30/00 , B82Y40/00 , H01M4/02
摘要： A nano silicon material having reduced amounts of oxygen (O) and chlorine (Cl) contained therein is provided.The nano silicon material contains fluorine (F) and nano-sized silicon crystallites. Generation of a layer in which oxygen (O) and chlorine (Cl) are present is suppressed due to the presence of fluorine (F), so that a decrease in the moving speed of lithium ions is suppressed. In addition, due to the presence of fluorine (F), the concentrations of oxygen (O) and chlorine (Cl) are reduced, so that reaction thereof with lithium ions is suppressed.
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公开(公告)号：US10308515B2
公开(公告)日：2019-06-04
申请号：US15735281
申请日：2016-05-20
发明人： Masanori Harata , Nobuhiro Goda , Takashi Mohri , Hiroki Oshima
摘要： Provided is a method for producing a CaSi2-containing composition, the method including: a molten metal step of adding Ca and/or M (M is at least one element selected from elements of groups 3 to 9) to a CaSi2-containing composition containing crystalline silicon to prepare a molten metal containing Ca, M and Si that satisfy the following condition: when a molar ratio of Ca, M and Si is x:y:z (x+y+z=100), x, y and z satisfy 23
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公开(公告)号：US10217990B2
公开(公告)日：2019-02-26
申请号：US15314246
申请日：2015-05-26
IPC分类号： H01M4/02 , H01M10/02 , H01M4/134 , H01L29/40 , H01M4/48 , C01B33/031 , H01M4/38 , H01M4/36 , C01B33/021
摘要： A silicon material useful as a negative electrode active material is provided.The silicon material has an Si/O atom ratio within a range of greater than 1/0.5 and not greater than 1/0.1 and a band gap within a range of greater than 1.1 eV and not greater than 2.1 eV. A secondary battery in which this silicon material is used as a negative electrode active material has long life.
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公开(公告)号：US10164255B2
公开(公告)日：2018-12-25
申请号：US15314309
申请日：2015-05-26
IPC分类号： H01M4/38 , C01B33/021 , H01M10/0525 , C01B33/12 , C01B33/02 , H01M4/48 , H01M4/02
摘要： A silicon material useful as a negative electrode active material is provided.The silicon material has a band gap within a range of greater than 1.1 eV and not greater than 1.7 eV. A secondary battery in which this silicon material is used as a negative electrode active material has improved initial efficiency.
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