Nickel-polyaniline composite electrodes for hydrogen evolution reaction in alkaline media

被引：29
|
作者：
Torres, Camila [1 ]
Moreno, Berta [2 ]
Chinarro, Eva [2 ]
Malfatti, Celia de Fraga [3 ]
机构：
[1] Fed Univ South & Southeast Para, Unifesspa, BR-68505080 Maraba, PA, Brazil
[2] CSIC, Inst Ceram & Vidrio, Campus Cantoblanco UAM,C Kelsen 5, Madrid 28049, Spain
[3] Univ Fed Rio Grande do Sul, DEMET PPGEM, BR-91501970 Porto Alegre, RS, Brazil
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2017年 / 42卷 / 32期
关键词：
Hydrogen-evolution reaction (HER); Nickel-polyaniline; Composite electrode; Electrochemical impedance; Catalytic activity; ELECTROCHEMICAL IMPEDANCE; ELECTROLYTIC HYDROGEN; OXIDATION; ELECTROCATALYST; PLATINUM; CATHODE; ACID;
D O I：
10.1016/j.ijhydene.2017.06.213
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：
In this work, nickel-based electrodes were prepared using a composite electrodeposition technique in a nickel bath containing suspended polyaniline (PAni) particles. The electrodes were characterized by Raman spectroscopy and scanning electron microscopy. The catalytic activity of the composite electrodes for the hydrogen evolution reaction (HER) was measured by cathodic polarization and electrochemical impedance spectroscopy in KOH and KOH with 1 M sucrose at room temperature. The Ni-PAni electrodes showed a high active surface area that contributed to the increase in the current density of HER and to the decrease in overpotential value as compared to Ni electrodes. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：20410 / 20419
页数：10
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