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Aerosol Jet printing gel electrolyte membrane and its applications in flexible Al-air batteries

Authors： WU Xiao-bin，YU Ying，CHEN Hong-li，ZUO Yu-xin，ZUO Chun-cheng

Units： 1. Faculty of Mechanical Engineering & Automation Zhejiang Sci-Tech University, Hangzhou 310018, China; 2. College of Information Science and Engineering Jiaxing University, Jiaxing 314000, China; 3. Jiaxing Nanhu University, Jiaxing 314000, China

KeyWords： gel electrolyte membrane; Al-air batteries; aerosol jet printing; power density; Ionic conductivity

ClassificationCode：

year,volume(issue):pagination： 2023,43(1):109-115

Abstract：

Abstract: In this paper, potassium hydroxide, polyvinyl alcohol, and glycerin (KOH-PVA-GL) solution were used as printing ink to prepare gel electrolyte membrane with controllable thickness by aerosol jet printing. The gel electrolyte membrane was characterized and tested by XRD, SEM, EIS, and other experiments. The gel electrolyte membrane was assembled with a flexible Al-air battery to test its electrochemical performance, and the influence of the thickness and the KOH concentration of the gel electrolyte membrane on battery performance was explored. The results showed that the gel electrolyte membrane thickness in aerosol jet printing was controllable, and the 10-layer printed electrolyte thickness was only 18.4 μm. At the discharge current density of 3 mA/cm2, the peak power density of the Al-air battery assembled with 18.4 μm gel electrolyte membrane reached 8.22 mW/cm2. The ionic conductivity of the ultra-thin gel electrolyte membrane with 15%KOH mass fraction reached 2.44×10-2 S/cm, and the discharge time of the Al-air battery assembled with the gel electrolyte membrane was about 124% longer than that of the battery with 5% KOH concentration electrolyte.

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AuthorIntro：

吴晓斌(1997-),男,浙江金华人，硕士研究生,主要研究方向为复合材料电解质薄膜的制备

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