Measurement of local current density of all-vanadium redox flow batteries

被引：38

作者：

Hsieh, Wen-Yen ^{[1
,2
]}

Leu, Chih-Hsing ^{[3
]}

Wu, Chun-Hsing ^{[3
]}

Chen, Yong-Song ^{[1
,2
]}

机构：

[1] Natl Chung Cheng Univ, Adv Inst Mfg Hightech Innovat, Chiayi 62102, Taiwan

[2] Natl Chung Cheng Univ, Dept Mech Engn, Chiayi 62102, Taiwan

[3] Ind Technol Res Inst, Green Energy & Environm Res Labs, Hsinchu 31040, Taiwan

来源：

JOURNAL OF POWER SOURCES | 2014年 / 271卷

关键词：

All-vanadium redox flow battery; Local current density; Electrolyte flow rate; Discharge capacity; COULOMBIC EFFICIENCY; EXCHANGE MEMBRANES; ELECTROLYTE; SEPARATOR; BEHAVIOR;

D O I：

10.1016/j.jpowsour.2014.06.081

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：

This article presents a preliminary study of the measurement of local current density in all-vanadium redox flow batteries. Two batteries are designed and manufactured in this study, and the experimental results are compared. In the first cell, the current collector is divided into 25 segments, and the flow field plate is not segmented, whereas in the other cell, the flow field plate is segmented. The effects of the electrolyte flow rate on the battery efficiencies and the local current density variation are investigated. The experimental results show that the current density near the outlet significantly decreases when the discharge capacity approaches zero. In addition, the battery has a larger discharge depth at a higher electrolyte flow rate. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：245 / 251

页数：7

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