Kinetics of the chemical dissolution of vanadium pentoxide in acidic bromide solutions

被引：41

作者：

Skyllas-Kazacos, M ^{[1
]}

Limantari, Y ^{[1
]}

机构：

[1] Univ New S Wales, Sch Chem Engn & Ind Chem, Sydney, NSW 2052, Australia

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 2004年 / 34卷 / 07期

关键词：

dissolution kinetics; redox flow cells; vanadium bromide redox cell; vanadium pentoxide dissolution;

D O I：

10.1023/B:JACH.0000031168.03880.1a

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel vanadium bromide redox flow battery employing a vanadium bromide electrolyte in both half-cells has been proposed. Preparation of the electrolyte for this redox cell requires the chemical dissolution of vanadium pentoxide powder in the acidic bromide supporting electrolyte. In this study, the kinetics of the chemical dissolution process were investigated and a second order surface controlled reaction is reported with rate equation given by: Rate = 5x1(0-)4 (l mol(-1) s(-1)) [Br-](2) at 25degreesC and an activation energy of 37.2 kJ mol(-1).

引用

页码：681 / 685

页数：5

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