Influence of the preparation conditions on the morphology and electrochemical performance of nano-sized Cu–Sn alloy anodes
Influence of the preparation conditions on the morphology and electrochemical performance of nano-sized Cu–Sn alloy anodes
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DOI：
10.1016/j.jallcom.2006.08.074
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发表时间：
2007-07
影响因子：
6.2
通讯作者：
Fei Wang;Mingshu Zhao;Xiaoping Song
中科院分区：
文献类型：
--
作者：
Fei Wang;Mingshu Zhao;Xiaoping Song
采用还原沉淀法结合80℃恒温水浴时效处理制备纳米Cu-Sn合金粉末。通过X射线衍射（XRD）、场发射扫描电子显微镜（FE-SEM）和恒电流循环测试评估了合成的Cu-Sn合金粉末的微观结构、形貌和电化学性能。结果表明，老化后的样品相成分均匀，颗粒完整，网状结构疏松，电化学性能优良。当用作锂离子电池负极时，老化的 Cu6Sn4 和 Cu6Sn5 样品在 20 次循环后分别具有约 340 和 370mAhg−1 的可逆容量。
Nano-sized Cu–Sn alloy powders were prepared by reductive precipitation method combining with the aging treatment in constant temperature water bath at 80°C. The microstructure, morphology and electrochemical property of synthesized Cu–Sn alloy powders were evaluated by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) and galvanostatical cycling tests. The results indicated that the aged sample had uniform phase components, integrated particles, loose network-like structures and excellent electrochemical performance. When used as negative electrodes for lithium-ion batteries, the aged Cu6Sn4and Cu6Sn5samples delivered reversible capacities of about 340 and 370mAhg−1up to 20 cycles, respectively.