Journal of Electrochemical Science and Technology

The Korean Electrochemical Society (한국전기화학회)
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Various Alcohols as Electrolysis Suppressants in Zn-air Secondary Batteries

  • Yang, Soyoung (Department of Chemistry and Energy Engineering Sangmyung University) ;
  • Kim, Ketack (Department of Chemistry and Energy Engineering Sangmyung University)
  • Received : 2018.03.06
  • Accepted : 2018.08.10
  • Published : 2018.12.31
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Abstract

The gelling agent used in Zn-air cells plays a role in improving battery life. It prevents the evaporation of water and diffusion of $Zn^{2+}$ ions away from the current collector. Additional functionality was incorporated by replacing some of the gelling agents with new materials. Alcohols with moderate viscosity, namely maltose, sucrose, poly ethylene glycol 600, and 2-hydroxyethyl cellulose, were used to replace some gelling agents in this work. Among these alcohols, poly ethylene glycol 600 and 2-hydroxyethyl cellulose improved the cycle life of full cells. This improved cycle life was attributed to the inhibition of water electrolysis and the improved cycle life of the anode.

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