Zn-Al-Ce水滑石在Zn-Ni二次电池中的电化学性能

doi:10.16085/j.issn.1000-6613.2020-0925

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

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.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.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/Abstract

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

中图分类号:

TM919.2

屈亚松, 俞小花, 谢刚, 史春阳, 杨亚刚, 李永刚. Zn-Al-Ce水滑石在Zn-Ni二次电池中的电化学性能[J]. 化工进展, 2021, 40(3): 1558-1564.

QU Yasong, YU Xiaohua, XIE Gang, SHI Chunyang, YANG Yagang, LI Yonggang. Electrochemical properties of Zn-Al-Ce-LDHs in Zn-Ni secondary batteries[J]. Chemical Industry and Engineering Progress, 2021, 40(3): 1558-1564.

图/表 8

图1 Zn-Al-LDHs和不同铝铈比的Zn-Al-Ce-LDHs FTIR图

图2 Zn-Al-LDHs和不同铝铈比的Zn-Al-Ce-LDHs的XRD图

图3 Zn-Al-LDHs及Zn-Al-Ce-LDHs的SEM图

图4 Zn-Al-LDHs和不同铝铈比的Zn-Al-Ce-LDHs电极的循环伏安曲线

图5 Zn-Al-LDHs及不同铝铈比的Zn-Al-Ce-LDHs的Tafel极化曲线

表1 Zn-Al-LDHs及不同铝铈比的Zn-Al-Ce-LDHs Tafel极化曲线数据

样品	E_corr/V	j_corr/mA·cm^-2
Zn/Al=3	-1.423	4.89×10^-2
Al/Ce=5	-1.404	3.88×10^-2
Al/Ce=10	-1.400	3.79×10^-2
Al/Ce=20	-1.372	2.11×10^-2

图6 锌电极的充放电循环测试图

图7 锌电极第45次充放电特性曲线

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Zn-Al-Ce水滑石在Zn-Ni二次电池中的电化学性能

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

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