发明名称 |
Porous anode active material, method of preparing the same, and anode and lithium battery employing the same |
摘要 |
Provided are a porous anode active material, a method of preparing the same, and an anode and a lithium battery employing the same. The porous anode active material includes fine particles of metallic substance capable of forming a lithium alloy; a crystalline carboneous substance; and a porous carboneous material coating and attaching to the fine particles of metallic substance and the crystalline carboneous substance, the porous anode active material having pores exhibiting a bimodal size distribution with two pore diameter peaks as measured by a Barrett-Joyner-Halenda (BJH) pore size distribution from a nitrogen adsorption. The porous anode active material has the pores having a bimodal size distribution, and thus may efficiently remove a stress occurring due to a difference of expansion between a carboneous material and a metallic active material during charging and discharging. Further, the anode electrode and the lithium battery comprising the anode active material have excellent charge/discharge characteristics.
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申请公布号 |
US8562869(B2) |
申请公布日期 |
2013.10.22 |
申请号 |
US201113243039 |
申请日期 |
2011.09.23 |
申请人 |
MAH SANG-KOOK;KIM HAN-SU;IM DONG-MIN;SAMSUNG SDI CO., LTD. |
发明人 |
MAH SANG-KOOK;KIM HAN-SU;IM DONG-MIN |
分类号 |
H01B1/06;B28B1/00;C01B31/00;H01B1/24;H01M4/13 |
主分类号 |
H01B1/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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