A three-dimensional tin-coated nanoporous copper for lithium-ion battery anodes
A three-dimensional tin-coated nanoporous copper for lithium-ion battery anodes
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DOI：
10.1016/j.jpowsour.2010.12.021
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发表时间：
2011-08
期刊：
影响因子：
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通讯作者：
Shichao Zhang;Yalan Xing;T. Jiang;Z. Du;Feng Li;Lei He;Wenbo Liu
中科院分区：
文献类型：
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作者：
Shichao Zhang;Yalan Xing;T. Jiang;Z. Du;Feng Li;Lei He;Wenbo Liu
纳米多孔铜(NPC)作为一种新型的脱合金法制备的多孔金属，被引入锂离子电池中，既是集电体，又是活性物质的衬底。纳米多孔铜具有由大通道(数百纳米)和通道壁上的小孔(几十纳米)组成的三维结构。采用化学镀的方法在NPC和铜箔上沉积了一层薄薄的锡层，制备了正极。通过比较两种电极的电化学性能，发现纳米结构电极比平面电极具有更大的面积容量和更好的库仑效率。
Nanoporous copper (NPC), as a new kind of porous metal prepared by dealloying, is introduced into the lithium-ion battery as both the current collector and substrate of active material. The nanoporous copper has three-dimensional structure composed of large channels (hundreds of nanometers) and small pores (tens of nanometers) on the channel walls. Anodes were prepared by electroless depositing of a thin layer of tin on NPC and copper foil. By comparing the electrochemical performance of both electrodes, the nanostructured electrode exhibits much higher areal capacity and better Coulombic efficiency than planar electrode.