Comparison of Natural Polymer Based Gel Electrolytes in Flexible Zinc-Air Batteries

Byeong Jin Jeong; Yong Nam Jo

doi:10.3740/MRSK.2022.32.12.533

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2022 Vol.32, Issue 12 Preview Page Next Page

Comparison of Natural Polymer Based Gel Electrolytes in Flexible Zinc-Air Batteries 플랙서블 아연-공기전지를 위한 천연 고분자 젤 전해질의 전기화학적 거동 비교

December 2022. pp. 533-537

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Abstract

Flexible zinc-air batteries have many merits, including low cost, high safety, environmentally friendliness applicability, etc. One of the key factors to improve the performance of flexible zinc-air batteries is to use a gel electrolyte. In this study, gel electrolytes were synthesized from potato, sweet potato, and corn starch. In a comparison of each starch, the corn starch-based gel electrolyte showed the highest discharge capacity of 12.41 mAh/cm² in 20 mA and 6.47 mAh/cm² in 30 mA. It also delivered a higher specific discharge capacity of 7.06 mAh/cm² than the other materials after 100° bending. In addition, the electrochemical impedance spectroscopy (EIS) was analyzed to calculate the ionic conductivity. The potato, sweet potato, and corn starch-based gel electrolytes showed electrolyte resistances (R_e) of 0.306, 0.298, and 0.207 Ω, respectively. In addition, the corn starch-based gel electrolyte delivered the highest ionic conductivity of 0.121 S cm^-1 among the other gel electrolytes. Thus, the corn starch-based gel electrolyte was verified to improve the performance of flexible zinc-air batteries.

Keywords

zinc-air batteries

flexible

gel electrolyte

starch

natural polymer

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 32
No :12
Pages :533-537
Received Date : 2022-11-18
Revised Date : 2022-12-06
Accepted Date : 2022-12-06
DOI :https://doi.org/10.3740/MRSK.2022.32.12.533

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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