化工进展 ›› 2021, Vol. 40 ›› Issue (3): 1558-1564.DOI: 10.16085/j.issn.1000-6613.2020-0925

• 材料科学与技术 • 上一篇    下一篇

Zn-Al-Ce水滑石在Zn-Ni二次电池中的电化学性能

屈亚松1(), 俞小花1(), 谢刚1,2,3, 史春阳1, 杨亚刚1, 李永刚2,3   

  1. 1.昆明理工大学冶金与能源工程学院,云南 昆明 650093
    2.昆明冶金研究院有限公司,云南 昆明 650503
    3.共伴生有色金属资源加压湿法冶金技术国家重点实验室,云南 昆明 650503
  • 收稿日期:2020-05-26 出版日期:2021-03-05 发布日期:2021-03-17
  • 通讯作者: 俞小花
  • 作者简介:屈亚松(1992—),男,硕士研究生,研究方向为电池材料。E-mail:qys864656425@qq.com
  • 基金资助:
    国家自然科学基金面上项目(51774160);云南省万人计划(YNWR-QNBJ-2018-327);昆明理工大学分析测试基金(2018M20172102014)

Electrochemical properties of Zn-Al-Ce-LDHs in Zn-Ni secondary batteries

QU Yasong1(), YU Xiaohua1(), XIE Gang1,2,3, SHI Chunyang1, YANG Yagang1, LI Yonggang2,3   

  1. 1.Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
    2.Kunming Metallurgical Research Institute Co. , Ltd. , Kunming 650503, Yunnan, China
    3.State Key laboratory of Common Associated Non-ferrous Metal Resources Pressure Hydrometallurgy Technology, Kunming 650503, Yunnan, China
  • Received:2020-05-26 Online:2021-03-05 Published:2021-03-17
  • Contact: YU Xiaohua

摘要:

采用水热法制备锌铝铈水滑石(Zn-Al-Ce-LDHs),并且将其作为锌镍二次电池的新型负极材料。利用红外光谱(FTIR)、X射线衍射仪(XRD)和扫描电镜(SEM)对制备的Zn-Al-Ce-LDHs进行了形貌和微观结构的分析。通过循环伏安曲线(CV)、Tafel极化曲线和恒电流充电放电测试研究了Zn-Al-Ce-LDHs作为锌镍电池负极材料的电化学性能。XRD和SEM分析发现,制备的Zn-Al-Ce-LDHs结晶度完好、分散均匀并且呈现出了规则六边形片状结构。电化学性能研究结果表明,Zn-Al-Ce-LDHs应用到Zn-Ni二次电池中表现出了很好的循环可逆性能和抗腐蚀性能;恒电流充电放电测试结果分析可知,Zn-Al-Ce-LDHs电极表现出了较为优异的循环稳定性以及充放电特性,经过80次循环后,循环保持率可以达到95.1%。

关键词: Zn-Al-Ce-水滑石, 锌镍二次电池, 电化学性能, 循环稳定性

Abstract:

Zn-Al-Ce-LDHs was prepared by hydrothermal method and then used as a new negative material for Zn-Ni secondary battery. The morphology and microstructure of Zn-Al-Ce-LDHs were analyzed by FTIR, XRD and SEM. The electrochemical properties of Zn-Al-Ce-LDHs as the negative electrode materials for Zn-Ni secondary battery were studied by cyclic voltammetry (CV), Tafel polarization curve and constant current charge discharge test. XRD and SEM analysis showed the prepared Zn-Al-Ce-LDHs had nice crystallinity, uniform dispersion and a regular hexagonal sheet structure. The electrochemical tests showed that the Zn-Al-Ce-LDHs had good cycle reversibility and corrosion resistance when it was applied in Zn-Ni secondary battery. The galvanostatic charge and discharge tests also indicated that Zn-Al-Ce-LDHs electrode had excellent cycle stability and charge-discharge characteristics. After 80cycles, the cycle retention rate was 95.1%.

Key words: Zn-Al-Ce-layered double hydroxides (LDHs), znic-niccolum secondary battery, electrochemistry performance, cycle stability

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