Noncovalently functionalized organic graphene aerogel composite for high-performance proton storage  

作　　者：Jing He Maoding Cheng Qinglong Jiang Subramania Angaiah Minjie Shi Chao Yan 

机构地区：[1]School of Materials Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang,212003,China [2]Department of Chemistry and Physics,University of Arkansas,Pine Bluff 71601,USA [3]Electro-Materials Research Laboratory,Centre for Nanoscience and Technology,Pondicherry University,Puducherry,605014,India

出　　处：《Chinese Journal of Chemical Engineering》2025年第3期260-268,共9页中国化学工程学报(英文版)

基　　金：financially supported by the National Natural Science Foundation of China(52002157).

摘　　要：Although organic compounds are considered to be promising electrode materials with their remarkable characteristics such as diverse structures,design controllability,and environmental friendliness,their low charge-transfer capability and limited cycling durability hinder their application in aqueous proton batteries.Herein,we prepared a noncovalent phenazine-based graphene aerogel(H/G)composite for aqueous proton storage,which is realized by redox-active Hexaazatrinaphthalene(HATN)organic compound combined with conductive reduced graphene oxide(rGO).The integration of rGO into HATN not only effectively optimizes the electronic structure of the H/G composite to enhance its electrochemical activity,but also the favorable noncovalent π-π interaction existed between HATN and rGO provides a stable structure for fast electron transportation.The obvious electron transfer in the aerogel composite promotes fast and reversible redox reactions occurred with the imino-active HATN in the composite electrode for proton uptake/removal in an aqueous acidic electrolyte,which are demonstrated by in-situ Fourier transform infrared(FTIR)investigation,theoretical calculations and experimental measurements.Therefore,it can deliver a fast,stable and efficient aqueous proton storage behavior with a large specific capacity of 274 mA·h·g^(-1) and considerable calendar life with~100%capacity retention after 3000 cycles,surpassing previously reported proton-based organic electrodes in aqueous acidic electrolytes.Furthermore,an outstanding soft-package aqueous proton(APB)has been fabricated with considerable long-term cycling stability.

关 键 词：Organic compounds Composite materials Noncovalent interactions Energy storage Aqueous proton batteries 

分 类 号：O646[理学—物理化学]