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在超大电流下制造具有高输出能力的气电池

Xiuli Zhang¹, Xueyan Wu¹, Yan Lv¹

¹State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, Xinjiang, 830046, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)

|November 16, 2023

概括

一个新的空气电池 (ZAB) 使用石墨烯和合金量子点来实现创纪录的高放电能力. 这一突破提高了ZAB的性能,用于实际的动力应用.

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:

空气电池 (ZAB) 对新能源技术具有前景,但在高电流密度下容量有限,阻碍其在电力应用中的使用.
提高ZAB的性能,特别是在苛刻的条件下,对于推进电动汽车和电网存储解决方案至关重要.

研究的目的:

通过制造一种新的异质连接材料来开发高性能水性ZAB.
研究石墨烯 (GDY) 和Ag29Cu7合金量子点 (QDs) 对ZAB性能的协同效应.

主要方法:

一种组合了石墨烯 (GDY) 和Ag29Cu7合金量子点 (Ag29Cu7 QDs/GDY) 的异质连接材料的制造.
在水性ZAB中测试制造材料的电化学性能,重点是高电流密度下放电容量.
分析材料的结构和电化学性质,以了解潜在的机制.

主要成果:

基于Ag29Cu7 QDs/GDY的ZAB实现了创纪录的100 mA cm-2.2的放电电流密度.
在这种高电流密度下,获得了786.2 mAh g-1 Zn的显著特异性容量.
增强的性能归因于二元协同效应,创造了稳定的三相接口并减少了反应障碍.

结论:

新的Ag29Cu7 QDs/GDY异质连接材料显著提高了水性ZAB的性能.
这一进步克服了高电流密度运行的先前局限性,为ZAB的实际应用铺平了道路.
该研究表明,ZAB技术在大型电力供应设施方面取得了突破.

关键词:

在Zn空气电池.在 graphdiyne 中使用.高容量的高容量.三元的协同效应效应.超大电流是超大的电流.

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