泡沫镍表面原位生长纳米花锌钴氢氧化物电极材料及电化学性能研究

doi:10.11962/1006-4990.2020-0336

摘要/Abstract

摘要：

层状双金属氢氧化物（LDH）由于其丰富的活性位点和双金属的协同效应等优点已得到广泛关注。然而,制备具有高倍率性能、低电阻的新颖LDH电极材料仍是一个挑战。通过共沉淀法,在泡沫镍（NF）集流体上原位生长三维纳米花层状锌钴氢氧化物（ZnCo LDHs）电极材料。ZnCo LDHs@NF有较大的可及表面积以及较低的固有电阻（0.56 Ω）。同时该电极材料有较高的比容量（1 A/g的电流密度下为1 583 F/g）,并且在20 A/g的电流密度下仍能保持81%的比容量（1 280 F/g）。这些优异的电化学性能表明制备的ZnCo LDHs@NF电极材料在储能设备中具有较大的应用前景。

关键词: 层状双金属氢氧化物, 层状锌钴氢氧化物, 超级电容器, 电化学性能

Abstract:

Layered double hydroxide（LDH） has widely attracted attention due to its rich active sites and the synergistic ef-fects of bimetallic.However,the preparation of novel LDH electrode materials with high rate performance and low resistance is still a challenge.Three-dimensional nano-flowered zinc-cobalt layered hydroxides（ZnCo LDHs） electrode material grown in situ on nickel foam（NF） current collectors were prepared by co-precipitation method.ZnCo LDHs@NF had large accessible surface area and extremely low inherent resistance（0.56 Ω）.At the same time,the electrode material had high specific capa-city（1 583 F/g at current density of 1 A/g） and could still maintain specific capacity of 81%（1 280 F/g） at current density of 20 A/g.These excellent electrochemical properties indicate that the prepared ZnCo LDHs@NF electrode material has great application prospects in energy storage devices.

Key words: layered double hydroxide, layered zinc-cobalt hydroxide, supercapacitor, electrochemical property

中图分类号:

TQ132.41

张豪,王立艳,李英奇,肖姗姗,毕菲,赵丽. 泡沫镍表面原位生长纳米花锌钴氢氧化物电极材料及电化学性能研究[J]. 无机盐工业, 2021, 53(5): 61-65.

Zhang Hao,Wang Liyan,Li Yingqi,Xiao Shanshan,Bi Fei,Zhao Li. Nano-flowered ZnCo LDHs electrode material grown in situ on nickel foam and its electrochemical properties[J]. Inorganic Chemicals Industry, 2021, 53(5): 61-65.

图/表 6

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