Hexagonal NiO nanosheets on Ni-foam as an electrocatalyst for high-performance water splitting application

被引：11

作者：

Mishra, Rajneesh Kumar ^{[1
]}

Kumar, Vipin ^{[1
]}

Choi, Gyu Jin ^{[1
]}

Ryu, Jeong Won ^{[1
]}

Mane, Sagar M. ^{[2
]}

Shin, Jae Cheol ^{[2
]}

Gwag, Jin Seog ^{[1
]}

机构：

[1] Yeungnam Univ, Dept Phys, Gyongsan 38541, Gyeongbuk, South Korea

[2] Dongguk Univ Seoul, Div Elect & Elect Engn, Seoul 04620, South Korea

来源：

MATERIALS LETTERS | 2022年 / 324卷

关键词：

Hexagonal NiO nanosheets; Hydrogen evolution reaction; Stability; Water splitting; Oxygen evolution reaction; NICKEL-OXIDE;

D O I：

10.1016/j.matlet.2022.132740

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study illustrates the catalytic hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) activities of the hexagonal NiO nanosheets on Ni-foam. The NiO electrocatalyst demonstrates the low over-potentials of 83 mV/380 mV and low Tafel slopes of 209 mV dec-(1)/299 mV dec(-1) during HER/OER, respectively. It also reveals excellent stability, showing a slight change in overpotentials of 116 mV and 430 mV during HER/OER after 2000 CV cycles. Electrochemical impedance spectroscopy spectra show the series resistance of 0.83 omega/1.04 omega and charge-transfer resistance of 1.63 omega/4.70 omega during HER/OER after 2000 CV cycles.

引用

页数：5

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