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论文类型：期刊论文

发表时间：2019-04-01

发表刊物：MATERIALS RESEARCH BULLETIN

收录刊物：SCIE、EI

卷号：112

页面范围：261-268

ISSN号：0025-5408

关键字：Single-walled carbon nanotubes; Zinc oxide; Ni-Zn secondary battery; Cyclic stability; Discharge capacity

摘要：The cycle life of Ni-Zn secondary batteries is largely affected by the dissolution of zinc anode active substances. ZnO/carbon nanotube composites as anode materials are synthesized by physical mixing and chemical filling methods to reduce the dissolution of active substances and improve the electrochemical performance of Ni-Zn batteries. By performing electrochemical testing to the Ni-Zn batteries with anode materials of ZnO/carbon nanotube composites prepared by the two different synthesis methods, we find that the electrochemical performance of the Ni-Zn batteries with anode materials of ZnO/carbon nanotube composites synthesized by chemical filling method is far better than that synthesized by the physical mixing method, with discharge capacity of 410 mA h/g and achievable cycle life of about 600 times. The experimental results pave the way for applications of carbon nanomaterials to the optimal design of zinc anode of Ni-Zn secondary batteries.