发明名称 |
Si-based-alloy anode material |
摘要 |
Disclosed is a Si-based alloy anode material for lithium ion secondary batteries, including an alloy phase with a Si principal phase including Si and a compound phase including two or more elements, which includes a first additional element A selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Nb and Mg and a low-melting second additional element B selected from S, Se, Te, Sn, In, Ga, Pb, Bi, Zn, Al. This compound phase includes (i) a first compound phase including Si and the first additional element A; a second compound phase including the first additional element A and the second additional element B; and one or both of a third compound phase including two or more of the second additional elements B and a single phase of the second additional element B. |
申请公布号 |
US9508990(B2) |
申请公布日期 |
2016.11.29 |
申请号 |
US201314346112 |
申请日期 |
2013.01.30 |
申请人 |
Sanyo Special Steel Co., Ltd. |
发明人 |
Hirono Tomoki;Kariya Tetsuro;Sawada Toshiyuki |
分类号 |
H01M4/88;H01M4/38;H01M10/0525;C22C9/00;C22C9/02;C22C9/04;C22C28/00;H01M4/134 |
主分类号 |
H01M4/88 |
代理机构 |
The Webb Law Firm |
代理人 |
The Webb Law Firm |
主权项 |
1. A Si-based alloy anode material for lithium ion secondary batteries, comprising an alloy phase composed of a Si principal phase comprising Si and a compound phase consisting of two or more elements,
wherein the two or more elements comprise a first additional element A being at least one selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Nb and Mg and a low-melting second additional element B being at least one selected from the group consisting of S, Se, Te, Sn, In, Ga, Pb, Bi, Zn, and Al, wherein the compound phase consists of: a first compound phase comprising Si and the first additional element A; a second compound phase comprising the first additional element A and the second additional element B; and one or both of a third compound phase comprising two or more of the second additional elements B and a single phase of the second additional element B, or, alternatively, consists of: a compound phase comprising Si and the first additional element A; and a compound phase comprising two or more of the second additional elements B and optionally a single phase of the second additional element B, and wherein the Si principal phase has an average minor axis width of 4 μm or less. |
地址 |
Himeji-shi JP |