Enhanced Electrochemical Oxidation of BH4- on Pt Electrode in Alkaline Electrolyte with the Addition of Thiourea

被引：1
|
作者：
Yu, Danmei [1 ,2 ]
Chen, Changguo [1 ]
Lei, Shu [1 ]
Zhou, Xiaoyuan [2 ]
Cao, Guozhong [2 ]
机构：
[1] Chongqing Univ, Coll Chem & Chem Engn, Chongqing 400044, Peoples R China
[2] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA
来源：
ADVANCES IN NEW CATALYTIC MATERIALS | 2010年 / 132卷
关键词：
Borohydride; Direct oxidation; Hydrolysis; Thiourea; PLATINUM-ELECTRODES; FUEL-CELL; BOROHYDRIDE;
D O I：
10.4028/www.scientific.net/AMR.132.271
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：
The electrochemical oxidation of sodium borohydride (NaBH4) on Pt electrode in alkaline electrolyte with the addition of thiourea has been studied by means of cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and chronopotentiometry (CP). NaBH4 is readily to react with hydroxyl groups to release hydrogen through either direct oxidation or catalytic hydrolysis. The experimental results demonstrated that the addition of an appropriate amount of thiourea to the alkaline electrolyte resulted in the suppression of catalytic hydrolysis and diffusion of borohydride ions through the separation membrane.
引用
收藏
页码：271 / +
页数：3
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