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高性能素水性电池利用[BrCl 2] 通过重建电解质结构在 Ketjenblack 中进行储存

Jiajin Zhao¹, Yadi Qi¹, Yan Chen¹

¹School of Environmental and Chemical Engineering, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, Hebei Province, PR China.

Angewandte Chemie (International ed. in English)

|February 12, 2025

概括

研究人员使用Ketjenblack carbon开发了用于电池的高度可逆的素氧化还原对. 这一突破通过提高电池性能和稳定性来增强能量储存.

科学领域:

电化学和材料科学材料科学
储能系统储能系统储能系统

背景情况:

氧还氧配对为电池提供了高潜力和低成本,但通常具有较差的可逆性.
提高基于素的系统的可逆性对于推进静态水性电池技术至关重要.

研究的目的:

为了设计高度可逆的[Br₂Cl]^-/Br^-和[BrCl₂]^-/Cl^-的氧化还原对.
通过新型宿主材料和电解质提高基于的水性电池的性能.

主要方法:

采用纳米孔的Ketjenblack (KB) 碳作为宿主材料,以促进间素化学.
采用了由ZnCl,ZnBr和胆化物组成的水合深解剂电解质,用于可调节的素反应.
研究了电解质和KB宿主中的[ZnCl_4-xBr_x]^2-的协调化学.

主要成果:

在KB碳宿主中实现了高度可逆的[Br₂Cl]^-/Br^-和[BrCl₂]^-/Cl^-的氧化还原对.
优化的KB电极表现出535mAh高放电容量,KB-1和平均放电电压为1.6V.
报告了创纪录的788Wh kg_KB-1的高能量密度,袋式电池达到2.3 mAh cm^{-2的面积容量.}

结论:

介素协调化学和KB孔主体的组合显著提高了氧化还原对的可逆性.
该战略为开发高性能静态水性素电池用于储能提供了新的途径.
开发的系统为可扩展和具有成本效益的储能解决方案提供了一个有希望的替代方案.

关键词:

水性电池的水性电池是一个水性电池.深层欧特克溶剂溶剂的使用素素的使用方法高能量密度,高能量密度.金属电池金属电池是什么

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