The influence of zinc electrode substrate, electrolyte flow rate and current density on zinc-nickel flow cell performance
Trudgeon, David P.1; Loh, Adeline1; Ullah, Habib1; Li, Xiaohong1; Yufit, Vladimir2; Brandon, Nigel2; Liu, Maocheng3; Kong, Lingbin3
2021-03-20
发表期刊ELECTROCHIMICA ACTA
ISSN0013-4686
卷号373
摘要This work aims to identify a suitable material for use as a zinc electrode substrate material in alkaline media, then employ this to study the effect of electrolyte flow rate and current density on zinc-nickel flow cell performance. Three metallic and four graphite composite materials are investigated, with the coulombic efficiency of zinc electrode charge / discharge cycling found to increase as hydrogen evolution onset potentials become more negative. A graphite / PVDF composite substrate demonstrates the highest coulombic efficiency at 96.7% and the most negative hydrogen evolution onset potential at -1.595 V vs. Hg/HgO. Using this material, the effect of electrolyte flow rate and current density on a zinc-nickel flow cell is investigated. Zinc morphology and flow cell performance is related to the ratio of applied current density to limiting current density. At values between 0.47 and 1, boulder type zinc morphologies occur, with smooth and compact zinc deposits resulting from current density ratios of 0.39 and below. Stable zinc-nickel flow cell performance is achieved over 200 cycles with coulombic, voltaic and energy efficiencies of 98.3, 88.1 and 86.6%, respectively, at a current density of 20 mA cm(-2). (C) 2021 Elsevier Ltd. All rights reserved.
关键词Electrolyte additive Redox flow battery Zinc electrode Zinc electrodeposition
DOI10.1016/j.electacta.2021.137890
收录类别SCIE
语种英语
WOS研究方向Electrochemistry
WOS类目Electrochemistry
WOS记录号WOS:000621259000014
出版者PERGAMON-ELSEVIER SCIENCE LTD
EI入藏号20210709926171
EI主题词Electrodes
EI分类号548.1 Nickel - 701.1 Electricity: Basic Concepts and Phenomena - 804 Chemical Products Generally - 951 Materials Science
来源库WOS
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/147419
专题材料科学与工程学院
通讯作者Li, Xiaohong
作者单位1.Univ Exeter, Coll Engn Math & Phys Sci, Renewable Energy Grp, Penryn Campus, Penryn TR10 9FE, Cornwall, England;
2.Imperial Coll London, Dept Earth Sci & Engn, London SW7 2AZ, England;
3.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
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GB/T 7714
Trudgeon, David P.,Loh, Adeline,Ullah, Habib,et al. The influence of zinc electrode substrate, electrolyte flow rate and current density on zinc-nickel flow cell performance[J]. ELECTROCHIMICA ACTA,2021,373.
APA Trudgeon, David P..,Loh, Adeline.,Ullah, Habib.,Li, Xiaohong.,Yufit, Vladimir.,...&Kong, Lingbin.(2021).The influence of zinc electrode substrate, electrolyte flow rate and current density on zinc-nickel flow cell performance.ELECTROCHIMICA ACTA,373.
MLA Trudgeon, David P.,et al."The influence of zinc electrode substrate, electrolyte flow rate and current density on zinc-nickel flow cell performance".ELECTROCHIMICA ACTA 373(2021).
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