Improved electrochemical performance of Zn–air secondary batteries via novel organic additives

Mao Chia Huang, Shih Hsuan Huang, Sheng Cheng Chiu, Kan Lin Hsueh, Wen Sheng Chang, Chang Chung Yang, Ching Chen Wu, Jing Chie Lin

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

In this study, we report the electrochemical and corrosion behaviors of Zn anodes in electrolytes (6.0 M KOH) with various additives, such as ethylenediaminetetraacetic acid (EDTA), polysorbate 20 (Tween 20), and tartaric acid. Data are given as Tafel plots, linear polarizations, cyclic voltammetry measurements, and charge–discharge test results. After the 1000th cycle of charge–discharge measurements, the morphologies of the Zn anodes in electrolytes with various additives were examined by scanning electron microscopy (SEM). The results of linear polarization show that the corrosion resistance was in the order EDTA > Tween 20 > tartaric acid > blank. Based on the SEM images, the prevention of dendrite formation followed the order EDTA > Tween 20 = tartaric acid > blank.

Original languageEnglish
Pages (from-to)1239-1244
Number of pages6
JournalJournal of the Chinese Chemical Society
Volume65
Issue number10
DOIs
StatePublished - Oct 2018

Keywords

  • additives
  • anticorrosion
  • dendrite formation
  • electrochemical behavior
  • Zn–air secondary battery

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