Studies on cerium (Ce4+/Ce3+)-vanadium(V2+/V3+) redox flow cell-cyclic voltammogram response of Ce4+/Ce3+ redox couple in H2SO4 solution

被引：70

作者：

Liu, Y ^{[1
]}

Xia, X

Liu, H

机构：

[1] Univ S Florida, Dept Chem, Tampa, FL 33620 USA

[2] Xinjiang Univ, Inst Appl Chem, Urumqi 830046, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2004年 / 130卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

redox flow cell; cyclic voltammogram; Ce4+/Ce3+ couple;

D O I：

10.1016/j.jpowsour.2003.12.017

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 [物理化学]; 081704 [应用化学];

摘要：

A novel Ce4-/Ce3+-V2+/V3+ redox flow cell has been designed. The electrochemical responses of higher concentration Ce4+/Ce3+ couple in H2SO4 solution were investigated via cyclic voltammetry. The normal potential and the kinetic parameters for anodic oxidation of Ce3+ and cathodic reduction of Ce4+ were measured. The results showed the surface of platinum electrode was fully covered with type I oxide that inhibited the reduction of Ce4+. The reversibility of the Ce4+/Ce3+ couple improved with the increase of H2SO4 concentration. Different electrochemically active Substances existed at various state of charge (SOC) and the reversibility of the Ce4+/Ce3+ couple at the carbon electrode was superior to platinum. (C) 2003 Published by Elsevier B.V.

引用

页码：299 / 305

页数：7

共 27 条

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