La(OH)_(3)负载锌铝水滑石的制备及其应用在锌镍二次电池中的性能  

La(OH)_(3)Loaded Zinc Aluminum Hydrotalcite:Preparation and Performance for Zinc Nickel Secondary Battery

作　　者：吴占新 屈亚松 俞小花[1] 谢刚[1,2,3] 张文之 崔鹏媛 李永刚 WU Zhan-Xin;QU Ya-Song;YU Xiao-Hua;XIE Gang;ZHANG Wen-Zhi;CUI Peng-Yuan;LI Yong-Gang(Faculty 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 Technology Development Co.,Ltd.,Kunming 650033,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650033

出　　处：《无机化学学报》2021年第5期778-784,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.51774160);国家重点研发计划(No.2019YFC1907900);云南省万人计划(No.YNWR-QNBJ-2018-327);云南省科技人才和平台计划项目(No.2017HA012);昆明理工大学分析测试基金(No.2020M20192202092)资助。

摘　　要：采用共沉淀法将氢氧化镧(La(OH)_(3))负载在锌铝水滑石(Zn-Al LDHs)的表面,扫描电镜(SEM)、X射线衍射(XRD)表明La(OH)_(3)成功负载在锌铝水滑石表面,并且负载后的锌铝水滑石仍然为六边形片状晶体,且粒径均匀、分散性好。La(OH)_(3)质量其具有较好的可逆性、更大的正腐蚀电位及较小的电池内阻。5%La(OH)_(3)@Zn-Al LDHs在经过80次循环后,其循环保持率为94.84%。Lanthanum hydroxide(La(OH)_(3))was loaded on the surface of zinc-aluminum hydrotalcite(Zn-Al LDHs)by co-precipitation method.The X-ray diffraction(XRD)patterns and scanning electron microscopy(SEM)images reveal that theLa(OH)_(3)was successfully loaded on the surface of the Zn-AlLDHs,and the loaded Zn-Al LDHs still showed hexagonal plate-like crystals with uniform particle size and good dispersion;5%La(OH)_(3)@Zn-Al LDHs had the best electrochemical performance.Cyclic voltammetry(CV),Tafel polarization curves and electrochemical impedance spectroscope(EIS)showed that it had better reversibility,larger positive corrosion potential and lower resistance.5%La(OH)_(3)@Zn-Al LDHs showed the cycle retention of 94.84%after 80 cycles.

关 键 词：负载 Zn-Al LDHs Zn-Ni二次电池 La(OH)_(3) 

分 类 号：TM912[电气工程—电力电子与电力传动]