Nanosized SnSb alloy pinning on hard non-graphitic carbon spherules as anode materials for a Li ion battery
Nanosized SnSb alloy pinning on hard non-graphitic carbon spherules as anode materials for a Li ion battery
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DOI：
10.1021/cm010195p
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发表时间：
2002-01-01
影响因子：
8.6
通讯作者：
Huang, XJ
中科院分区：
文献类型：
--
作者：
Li, H;Wang, Q;Huang, XJ
在乙二醇溶液中低温共沉淀法将纳米SnSb合金颗粒固定在微米级硬碳球表面。由于合金粒度小、分散性好、合金颗粒在碳表面的钉住性好，加之合金和碳都具有储锂活性，所制备的复合材料作为锂离子电池负极材料的电化学性能比单独使用合金和碳要好得多。这种特殊的结构有效地阻碍了纳米级合金颗粒的聚集，这是纳米级合金基锂离子电池负极材料应用的主要困难。
Nanosized SnSb alloy particles were pinned on the surface of micrometer-sized hard carbon spherules by a coprecipitation method in glycol solution at low temperature. Thanks to the small alloy particle size, good dispersion, and tight pinning of the alloy particles on the surface of carbon, in addition to the fact that both the alloy and the carbon are active for Li storage, the composite materials as prepared show much improved electrochemical performances as anode materials for lithium ion batteries compared with alloy and carbon alone. Such a special structure effectively hinders the aggregation of nanosized alloy particles, which are the main difficulties in the application of nanoscale alloy-based anode materials for Li ion batteries.