Non-isothermal modelling of the all-vanadium redox flow battery

被引：239

作者：

Al-Fetlawi, H. ^{[1
]}

Shah, A. A. ^{[1
]}

Walsh, F. C. ^{[1
]}

机构：

[1] Univ Southampton, Energy Technol Res Group, Sch Engn Sci, Southampton SO17 1BJ, Hants, England

来源：

ELECTROCHIMICA ACTA | 2009年 / 55卷 / 01期

关键词：

Vanadium; Modelling and simulation; Energy balance; Temperature; ION-EXCHANGE MEMBRANES; MATHEMATICAL-MODEL; FUEL-CELLS; SIMULATION; WATER; PERFORMANCE; DEGRADATION; DIFFUSION;

D O I：

10.1016/j.electacta.2009.08.009

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

An non-isothermal model for the all-vanadium redox flow battery (RFB) is presented. The two-dimensional model is based on a comprehensive description of mass. charge, energy and momentum transport and conservation, and is combined with a global kinetic model for reactions involving vanadium species. Heat is generated as a result of activation losses, electrochemical reaction and ohmic resistance. Numerical simulations demonstrate the effects of changes in the operating temperature on performance. It is shown that variations in the electrolyte flow rate and the magnitude of the applied current substantially alter the charge/discharge characteristics, the temperature rise and the distribution of temperature. The influence of heat losses on the charge/discharge behaviour and temperature distribution is investigated. Conditions for localised heating and membrane degradation are discussed. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：78 / 89

页数：12

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