Journal
CHEMICAL PHYSICS LETTERS
Volume 723, Issue -, Pages 102-110Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2019.02.032
Keywords
Zinc-silver batteries; PEG-200; Zinc dendrites; Cycling performance; Electrolyte additive
Funding
- National Natural Science Foundation of China [21872108, 21573167, 91545205, 21633008]
- Wuhan University Innovation Team [2042017kf0232]
- National Key Research and Development Program [2016YFB0101203]
- Fundamental Research Funds for the Central Universities [2014203020207]
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The growth of zinc dendrites during cycling has constrained the development of the silver-zinc batteries. Herein, we focus on the practical application of polyethylene glycol with molecular weight of 200 as an electrolyte additive to the silver-zinc batteries. The cycleability of the batteries was significantly improved by introducing proper amount PEG-200 into the alkaline electrolyte. Further study shows that adding PEG-200 as electrolyte additive can effectively maintain the structure of the zinc electrode, and clearly inhibit the growth of zinc dendrites. At the same time, silver electrodes are not sensitive to the PEG-200 addition.
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