Steric hindrance modulation of hexaazatribenzanthraquinone isomers for high-capacity and wide-temperature-range aqueous proton battery

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外文摘要：Organic materials with rich active sites are good candidates of high-capacity anodes in aqueous batteries,but commonly low utilization of active sites limits their capacity.Herein,two isomers,symmetric and asymmetric hexaazatribenzanthraquinone(s-HATBAQand a-HATBAQ),with rich active sites have been synthesized in a controllable manner.It has been revealed for the first time that a sulfuric acid catalyst can facilitate the stereoselective formation of s-HATBAQ Attributed to the reduced steric hindrance in favor of proton insertion as well as the amorphous structure conducive to electrochemical dynamics,s-HATBAQ exhibits 1.5 times larger specific capacity than a-HATBAQ Consequently,the electrode of s-HATBAQwith 50％reduced graphene oxide(s-HATBAQ;50％rGO)delivers a record high specific capacity of 405 mAh g-1 in H2SO4 electrolyte.Moreover,the assembled MnO2//s-HATBAQ;50％rGO aqueous proton full batteries show an exceptional cycling stability at 25℃ and can maintain～92％capacity after 1000 cycles at 0.5 A g-1 at-80℃.This work demonstrates the controllable synthesis of isomers,showcases a wide-temperature-range prototype proton battery and highlights the significance of precise molecular structure modulation in organic energy storage.

外文关键词：

stereoisomerssteric effectaqueous batterysuper cycling stabilityultra-low temperature proton battery

作者：

Mingsheng Yang、Yuxin Hao、Bei Wang、Yan Wang、Liping Zheng、Rui Li、Huige Ma、Xinyu Wang、Xiaoming Jing、Hongwei Li、Mengxiao Li、Zhihui Wang、Yujie Dai、Guangcun Shan、Mingjun Hu、Jun Luo、Jun Yang

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作者单位：

School of Materials Science and Engineering,Beihang University,Beijing 100191,China

Beijing Institute of Nanoenergy &Nanosystems,Chinese Academy of Sciences,Beijing 101400,China

Center on Nanoenergy Research,School of Physical Science & Technology,Guangxi University,Nanning 530004,China

School of Chemistry and Chemical Engineering,Center on Nanoenergy Research,Guangxi University,Nanning 530004,China

School of Instrumentation Science and Opto-electronics Engineering,Beihang University,Beijing 100191,China

ShenSi Lab,Shenzhen Institute for Advanced Study,University of Electronic Science and Technology of China,Shenzhen 518110,China

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基金：

国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金the'Hundred Talents Program,of the Chinese Academy of Sciences国家重点研发计划中央高校基本科研业务费专项深圳市科技计划深圳市科技计划深圳市科技计划深圳市科技计划Guangdong Basic and Applied Basic Research Foundation

项目编号：

223710102177101751702009519711572016YFE0204200JCYJ20210324115412035JCYJ2021-0324123202008JCYJ20210324122803009ZDSYS202108130955340012021A1515110880

出版年：

2024

DOI：

10.1093/nsr/nwae045

国家科学评论(英文版)

CSTPCD

ISSN：

年,卷(期)：2024.11(4)

参考文献量53