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US 8,940,196 B2Granted
Silicon based shape memory alloy negative active material, negative active material composition including same, rechargeable lithium battery including same, and method of preparing same
AssigneeSamsung SDI Co., Ltd.
InventorsByung-Joo Chung, Chun-Gyoo Lee
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Abstract
A silicon-based shape memory alloy negative active material includes a silicon-based material precipitated on a Ni2Mn1-XZX shape memory alloy basic material. In the silicon-based shape memory alloy negative active material, X satisfies the relationship 0≦X≦1 and Z is one of Al, Ga, In, Sn, or Sb.
Claims16
A silicon-based shape memory alloy negative active material, comprising:
- a silicon-based material precipitated on a Ni2Mn1-XZX shape memory alloy basic material, wherein:
- 0≦x≦1, and
- Z is one of Al, Ga, In, Sn, or Sb;
- wherein the silicon-based material:
- has a particle diameter of about 10 nm to about 200 nm;
- and
- is included in an amount of about 60 wt % to about 100 wt %, based on an amount of the memory alloy basic material.
4 more elements
A method for preparing a silicon-based shape memory alloy negative active material where a silicon-based material is precipitated on a shape memory alloy basic material, the method comprising:
- mixing and melting a Ni2Mn1-XZX shape memory alloy basic material and a silicon-based material so as to produce a mixture, wherein 0≦x≦1, and Z is Al, Ga, In, Sn, or Sb;
- and
- quenching the mixture;
- wherein the silicon-based material:
- has a particle diameter of about 10 nm to about 200 nm;
- and
- is included in an amount of about 60 wt % to about 100 wt %, based on an amount of the Ni2Mn1-XZX shape memory alloy basic material.
4 more elements
Dependencies are inferred from the claim text.