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对于空气电池中负电极的电子沉积离子保护层

Papa K Kwarteng¹, Suanto Syahputra¹, Luca Pasquini¹

¹Aix Marseille Univ, CNRS, MADIREL (UMR 7246), Electrochemistry of Materials Group, Campus St Jérôme, 13013 Marseille, France.

|July 28, 2023

概括

使用聚乙N,N,N-三甲) 化物 (PVBTMA) 薄膜保护阳极,可以提高空气电池的性能. 这种方法减少了腐蚀和树石的形成,提高了电池的效率和寿命.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
储能储能储能储能储能储能

背景情况:

空气电池 (ZAB) 中的阳极受腐蚀和树状岩石的形成影响,限制了电池的性能和周期寿命.
有效的保护策略对于推进ZAB技术至关重要.

研究的目的:

开发和评估ZAB中阳极的保护层.
为了研究使用离子导电的聚乙烯 N,N,N-三甲) 化物 (PVBTMA) 薄膜来增强腐蚀和树保护.

主要方法:

通过循环电压测量,PVBTMA薄膜被电流直接沉积在金属上.
鉴定包括光学和电子显微镜,并测量透性的接触角.
采用涂层和未涂层阳极的ZAB被组装并测试了开放电路电压和循环性能.

主要成果:

电解压产生了具有选择性离子传输的PVBTMA薄膜,改善了接口质量和耐腐蚀性.
用PVBTMA涂层的Zn阳极表现出稳定的开放电路电压 (1.55V与Pt阴极,1.31V在微型电池).
循环测试显示,在液体电解质ZAB中近100个循环,在小型ZAB中超过20个循环,放电能力稳定.

结论:

PVBTMA薄膜有效地保护ZAB中的阳极免受腐蚀和树突形成.
电极沉积方法提供了强大的接口,提高了电池的循环和效率.
微型ZAB需要进一步优化,以解决阴极堵塞和电解质降解问题.

关键词:

阳离子交换膜的阳离子交换膜电聚变的电聚合.金属空气电池的使用.氧降解反应是氧降解反应.

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