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对于具有高压和长期循环稳定性的质子离子电池的比费纳衍生物阳极的对称设计

Caixing Wang¹, Dunyong He¹, Huaizhu Wang²

¹Institute of Innovation Materials and Energy, School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225002, China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|June 15, 2024

概括

一种新的有机阳极材料,二乙衍生物 (BPZT),提供稳定,高性能质子离子电池 (PrIBs),具有改进的电池电压和长周期寿命.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
储能储能储能储能储能储能

背景情况:

有机阳极对质子离子电池 (PrIB) 是有希望的,但由于溶解和高氧化还原潜力而受到影响,限制了稳定性和电池电压.
现有的有机电极在循环过程中经常溶解,减少电池寿命.
有机电极中的高阳极电位导致PrIBs的总电池电压低 (<1.0 V).

研究的目的:

开发一种新的有机阳极材料,克服PrIBs当前电极的局限性.
为了研究一种双烯酸衍生物[2,2'-双烯酸]-7,7'-四醇 (BPZT) 的潜力,作为一个稳定和低氧化潜在的阳极.
了解分子结构,可溶性和还氧化潜力之间的关系,以提高电池性能.

主要方法:

合成和表征了一种新的双烯衍生物 (BPZT).
研究了BPZT的电化学特性,包括氧化还原潜力和H2SO4电解质中的溶解性.
组装PrIB使用带有MnO2@GF和PbO2阴极的BPZT阳极来评估电池电压和循环稳定性.

主要成果:

BPZT 显示了低氧化还原潜力 (0.29 V 与 SHE 相比) 和在 2 m H2SO4.4 中极好的不溶性.
与BPZT阳极组装的PrIB分别通过MnO2@GF和PbO2阴极实现了高电池电压 (1.07V和1.44V).
电池在20,000个循环中保持了90%的容量保留,并且在高质量负载 (10 mgBPZT cm-2) 上稳定运行.

结论:

BPZT是一种高度稳定的,低电位的有机阳极材料,适用于先进的质子离子电池.
开发的PrIB显示出长期储能应用的巨大潜力,因为它们具有高压,稳定性和容量保留.
专注于对称性和可溶性的分子设计策略可以有效地解决PrIBs有机电极开发的挑战.

关键词:

MnO2@石墨感觉的阴极在 PbO2 阴极上.长期周期稳定性长期周期稳定性纳衍生物的阳极.质子离子电池质子离子电池

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