Cobalt sulfide thin films for electrocatalytic oxygen evolution reaction and supercapacitor applications

被引：68
|
作者：
Kale, Shital B. [1 ]
Lokhande, Abhishek C. [2 ]
Pujari, Rahul B. [1 ]
Lokhande, Chandrakant D. [1 ]
机构：
[1] DY Patil Univ, Ctr Interdisciplinary Res, Kolhapur 416006, Maharashtra, India
[2] Chonnam Natl Univ, Dept Mat Sci & Engn, Gwangju 500757, South Korea
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2018年 / 532卷
关键词：
Chemical bath deposition; Cobalt sulfide; Oxygen evolution reaction; Supercapacitor; Thin film; MORPHOLOGY-CONTROLLED SYNTHESIS; HIGH-PERFORMANCE; BIFUNCTIONAL ELECTROCATALYST; HYDROTHERMAL SYNTHESIS; EFFICIENT ELECTROCATALYST; CONTROLLABLE SYNTHESIS; WATER OXIDATION; NANOSHEETS; REDUCTION; ELECTRODE;
D O I：
10.1016/j.jcis.2018.08.012
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Nanocrystalline cobalt sulfide thin film electrodes have been deposited on stainless steel substrate using binder-free chemical bath deposition (CBD) method and electrochemical study is performed in 1 M KOH electrolyte. Linear sweep voltammetry (LSV) curve shows that cobalt sulfide thin film electrode requires 300 mV overpotential (eta) to reach the current density of 10 mA cm(-2). Also, it exhibits Tafel slope of 57 my decade(-1) with stable catalytic activity over 14 h. Along with good electrocatalytic oxygen evolution performance, in supercapacitive study it shows specific capacitance of 252.39 F g(-1) at a scan rate of 5 mV s(-1). The stability test indicates that cobalt sulfide electrode is stable for 1000 cyclic voltammetry (CV) cycles. (C) 2018 Elsevier Inc. All rights reserved.
引用
收藏
页码：491 / 499
页数：9
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