In zinc-air batteries, the gel polymer electrolyte (GPE) is an important factor for improving performance. The rigid physical properties of polyvinyl alcohol reduce ionic conductivity, which degrades the performance of the batteries. Zinc acetate is an effective additive that can increase ionic conductivity by weakening the bonding structure of polyvinyl alcohol. In this study, polymer electrolytes were prepared by mixing polyvinyl alcohol and zinc acetate dihydride. The material properties of the prepared polymer electrolytes were analyzed by Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). Also, Electrochemical impedance spectroscopy was used to calculate ionic conductivity. The electrolyte resistances of GPE, 0.2 GPE, 0.4 GPE, and 0.6 GPE were 0.394, 0.338, 0.290, and 0.213 Ω, respectively. In addition, 0.6 GPE delivered 0.023 S/cm high ionic conductivity. Among all of the polymer electrolytes tested, 0.6 GPE showed enhanced cycle life performance and the highest specific discharge capacity of 11.73 mAh/cm2 at 10 mA. These results verified that 0.6 GPE improves the performance of zinc-air batteries.

1. 서 론
2. 실험 방법
    2.1. 전해질 제조
    2.2. 전지 제작
    2.3. 측정 및 분석
3. 결과 및 고찰
    3.1. 재료 특성
    3.2. 전기화학적 임피던스 측정
    3.3. 방전 거동
4. 결 론
References

• 김희서(한라대학교 공과대학 신소재화학공학과) | Hui Seo Kim (Department of Advanced Material & Chemical Engineering, College of Engineering, Halla University, Wonju 26404, Republic of Korea)
• 이동윤(한라대학교 공과대학 신소재화학공학과) | Dong Yun Lee (Department of Advanced Material & Chemical Engineering, College of Engineering, Halla University, Wonju 26404, Republic of Korea)
• 조용남(한라대학교 공과대학 신소재화학공학과) | Yong Nam Jo (Department of Advanced Material & Chemical Engineering, College of Engineering, Halla University, Wonju 26404, Republic of Korea) Corresponding author