Si-based-alloy anode material
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United States of America Patent
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Nov 29, 2016
Grant Date -
Dec 18, 2014
app pub date -
Jan 30, 2013
filing date -
Feb 1, 2012
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Abstract
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.
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