Regeneration of zinc particles for zinc air battery in spouted-bed electrochemical reactor

Name: Peerawat Puengthaijaroen

Organization : Chulalongkorn University. Faculty of Engineering

Name: Palang Bumroongsakulsawat

Organization : Chulalongkorn University. Faculty of Engineering

Email : Palang.B@chula.ac.th

keyword: Spouted-bed Electrochemical Reactor

LCSH: Electric batteries -- Zinc content

; Electrochemical Reactor

LCSH: Zinc

LCSH: Spouted bed processes

LCSH: Electrochemical apparatus

Abstract: Zinc-air batteries are a promising energy storage system due to its high energy density, low toxicity, and low flammability. They are currently used commercially in low-current devices. Batteries for high-current applications are constructed with zinc particles for increased specific surface areas. Nevertheless, the regeneration of zinc particles from dissolved zincate ions in spent electrolytes has been relatively neglected. We fabricate and study a spouted-bed electrochemical reactor for the regeneration of zinc particles from spent electrolytes. The reactor measures 220 mm high and 130 mm wide with copper as a cathode and stainless steel as an anode. The reactor is separated into two compartments with an anion-exchange membrane. Model spent electrolytes are made by saturating 7 M KOH solutions with ZnO. Zinc particles are spouted into the reactor along with the electrolyte as seed particles. Zinc is deposited on zinc particles in the cathode compartment electrochemically by imposing potential differences between the anode and the cathode. Effects of zinc particle morphology, current efficiency, and energy efficiency are studied.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2019

Modified: 2019-10-07

Issued: 2019-10-07

BibliograpyCitation : In Chemical Society of Thailand under the Patronage of Professor Dr. HRH Princess Chulabhorn. Pure and Applied Chemistry International Conference 2019 (PACCON 2019) (IC24-29). Bangkok : Mahidol University

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