Please use this identifier to cite or link to this item: https://doi.org/10.1149/2.0311414jes
Title: A near-neutral chloride electrolyte for electrically rechargeable zinc-air batteries
Authors: Thomas Goh, F.W
Liu, Z
Andy Hor, T.S 
Zhang, J
Ge, X
Zong, Y
Yu, A
Khoo, W
Keywords: Alkalinity
Chlorine compounds
Cyclic voltammetry
Electric batteries
Electrochemical electrodes
Electrodes
Electrolytes
Zinc
Zinc chloride
Alkaline electrolytes
Carbonate formations
Chloride electrolytes
Discharge-charge cycle
Impedance spectroscopy
Neutral electrolytes
Rechargeable zinc-air batteries
Rotating disc electrode
Secondary batteries
Issue Date: 2014
Publisher: Electrochemical Society Inc.
Citation: Thomas Goh, F.W, Liu, Z, Andy Hor, T.S, Zhang, J, Ge, X, Zong, Y, Yu, A, Khoo, W (2014). A near-neutral chloride electrolyte for electrically rechargeable zinc-air batteries. Journal of the Electrochemical Society 161 (14) : A2080-A2086. ScholarBank@NUS Repository. https://doi.org/10.1149/2.0311414jes
Abstract: Near-neutral electrolytes based on zinc chloride and ammonium chloride are examined for rechargeable zinc-air battery application. The effects of pH value, salt concentration, and polyethylene glycol and thiourea additives are investigated and a chloride electrolyte is developed. The reversible zinc deposition and zinc stripping processes are studied by cyclic voltammetry with rotating-disc electrode technique. The zinc anode and air cathode behaviors in near-neutral chloride electrolyte are characterized by quasi steady-state polarization and impedance spectroscopy. Prototyped zinc-air battery with near-neutral chloride electrolytes can sustain more than 1000 hours and hundreds of discharge-charge cycles with minimized zinc dendrite formation and no carbonate formation problem, under discharge-charge capacity ranging from 20 to 120 mAh. The near-neutral chloride electrolyte provides a safer and more robust alternative to traditional alkaline electrolyte for rechargeable zinc-air batteries. © The Author(s) 2014.
Source Title: Journal of the Electrochemical Society
URI: https://scholarbank.nus.edu.sg/handle/10635/175310
ISSN: 0013-4651
DOI: 10.1149/2.0311414jes
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