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%。
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%.
作者
屈亚松
俞小花
谢刚
史春阳
杨亚刚
李永刚
QU Yasong;YU Xiaohua;XIE Gang;SHI Chunyang;YANG Yagang;LI Yonggang(Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China;Kunming Metallurgical Research Institute Co.,Ltd.,Kunming 650503,Yunnan,China;State Key laboratory of Common Associated Non-ferrous Metal Resources Pressure Hydrometallurgy Technology,Kunming 650503,Yunnan,China)
出处
《化工进展》
EI
CAS
CSCD
北大核心
2021年第3期1558-1564,共7页
Chemical Industry and Engineering Progress
基金
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)。
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
Zn-Al-Ce-layered double hydroxides(LDHs)
znic-niccolum secondary battery
electrochemistry performance
cycle stability
