Ce(OH)_(3)包覆Zn-Al-LDHs在Zn-Ni二次电池中的电化学性能  

Electrochemical Properties of Ce(OH)_(3) Coating Zn-Al-LDHs in Zn-Ni Secondary Battery

作　　者：屈亚松 俞小花[1] 谢刚[1,2,3] 吴占新 史春阳 杨亚刚 李永刚 QU Yasong;YU Xiaohua;XIE Gang;WU Zhanxin;SHI Chunyang;YANG Yagang;LI Yonggang(School of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;Kunming Metallurgical Research Institute Co.,Ltd.,Kunming 650503,China;State Key Laboratory of Common Associated Non-ferrous Metal Resources Pressure Hydrometallurgy Technology,Kunming 650503,China;Yunnan Copper Science&Technology Development Co.,Ltd.,Kunming 650101,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093 [2]昆明冶金研究院有限公司,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,昆明650503 [4]云南铜业科技发展股份有限公司,昆明650101

出　　处：《材料导报》2021年第18期18007-18011,共5页Materials Reports

基　　金：国家重点研发计划(2019YFC1907900);国家自然科学基金(51774160);云南省万人计划(YNWR⁃QNBJ⁃2018⁃327);云南省科技人才和平台计划项目(2017HA012)。

摘　　要：采用共沉淀法制备Ce(OH)_(3)包覆Zn-Al-LDHs,并且将其作为锌镍二次电池的新型负极材料。利用X射线衍射仪(XRD)和扫描电镜(SEM)对Ce(OH)_(3)包覆Zn-Al-LDHs进行形貌和微观结构的表征,结果表明,Ce(OH)_(3)成功包覆在Zn-Al-LDHs表面。通过循环伏安曲线(CV)、Tafel极化曲线、交流阻抗曲线(EIS)和恒电流充电放电测试研究了其作为锌镍电池负极材料的电化学性能,结果表明,Ce(OH)_(3)包覆Zn-Al-LDHs表现出很好的循环可逆性能和抗腐蚀性能,Ce(OH)_(3)包覆Zn-Al-LDHs电极在Zn-Ni二次电池中的循环稳定性和充放电特性得到了明显提高,经过80次循环后,其循环保持率可以达到94.5%。Ce(OH)_(3)coating Zn-Al-LDHs were prepared by coprecipitation method and used as a new negative material for Zn-Ni secondary battery.The morphology and microstructure of Ce(OH)_(3)coating Zn-Al-LDHs were represented by XRD and SEM.The results showed that Ce(OH)_(3)was successfully coating on the surface of Zn-Al-LDHs.The electrochemical properties were studied by cyclic voltammetry(CV),Tafel polarization curve,electrochemical impedance spectroscope(EIS)and galvanostatic charge-discharge measurements as negative electrode materials for Zn-Ni battery.The results showed that Ce(OH)_(3)coating Zn-Al-LDHs exhibits good cyclic reversibility and corrosion resistance,and the cyclic stability and charge-discharge characteristics of Ce(OH)_(3)coating Zn-Al-LDHs are significantly improved in Zn-Ni secondary battery.After 80 cycles,the cycle retention rate can reach 94.5%.

关 键 词：Ce(OH)_(3) 包覆 Zn-Al-LDHs 锌镍二次电池 

分 类 号：TM919.2[电气工程—电力电子与电力传动]