锌基复合电极原位水热合成和电化学性能研究

无机盐工业 ›› 2019, Vol. 51 ›› Issue (6): 21-24.

锌基复合电极原位水热合成和电化学性能研究

赵宇,张硕嘉,徐冰(),于越,孙小卉

大连交通大学辽宁省新能源电池重点实验室,辽宁大连 116028

收稿日期:2019-01-20 出版日期:2019-06-10 发布日期:2020-05-12
作者简介:赵宇（1974— ）,男,博士研究生,主要研究方向为基于超级电容器的电极材料的制备与应用,已发表文章5篇;E-mail：9339511@qq.com。
基金资助:
辽宁省自然科学基金项目(201602137)

Fabrication and electrochemical properties of Zn-based electrode materials

Zhao Yu,Zhang Shuojia,Xu Bing(),Yu Yue,Sun Xiaohui

Liaoning Provincial Key Laboratory of New Energy Battery,Dalian Jiaotong University,Dalian 116028,China

Received:2019-01-20 Published:2019-06-10 Online:2020-05-12

摘要/Abstract

摘要：

以硝酸锌、硝酸铝为前体,尿素为沉淀剂,采用水热法在泡沫镍表面原位生长锌基有序微纳米片状电极材料。采用X射线衍射、扫描电子显微镜、透射电子显微镜等手段对合成产物的结构和形貌进行了表征。研究结果表明,产物为少量铝掺杂的Zn_4-_xAl_x（OH）₆CO₃·H₂O层状双金属氢氧化物,形貌为正六边形片状结构,直径为1~2 μm,厚度为80~200 nm。以合成的锌基复合电极为工作电极,采用三电极体系进行电化学性能测试,结果显示电极呈现典型的赝电容性质,电流密度为5 A/g条件下电极质量比电容仍高达1 022.3 F/g。

关键词: 层状双金属氢氧化物, 水热法, 超级电容器

Abstract:

A zinc-based ordered micro-nano-plate electrode material was prepared in situ on the surface of foamed Ni by hy-drothermal method with Zn nitrate and Al nitrate as precursors and urea as precipitant.The structure and morphology of the product were studied and characterized by X-ray diffraction,scanning electron microscopy and transmission electron micro-scopy.The results showed that the product presented layered double hydroxides structure with a small amount of Al doping.The Zn_4-_xAl_x（OH）₆CO₃·H₂O appeared a regular hexagonal structure with a diameter of 1~2 μm and a thickness of 80~200 nm.The electrochemical test of the three-electrode system showed that the electrode presented typical pseudo capacitance proper-ties.The specific capacitance of in-situ ordered growth of Zn_4-_xAl_x（OH）₆CO₃·H₂O electrode was still as high as 1 022.3 F/gwhen the current density was 5 A/g.

Key words: layered double hydroxides, hydrothermal method, supercapacitor

中图分类号:

TQ138.13

赵宇,张硕嘉,徐冰,于越,孙小卉. 锌基复合电极原位水热合成和电化学性能研究[J]. 无机盐工业, 2019, 51(6): 21-24.

Zhao Yu,Zhang Shuojia,Xu Bing,Yu Yue,Sun Xiaohui. Fabrication and electrochemical properties of Zn-based electrode materials[J]. Inorganic Chemicals Industry, 2019, 51(6): 21-24.

图/表 7

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锌基复合电极原位水热合成和电化学性能研究

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