Electrochemically triggered decoupled transport behaviors in intercalated graphite:From energy storage to enhanced electromagnetic applications

作     者：Ya Chen Kailun Zhang Na Li Wei Guan Zhiyuan Li Haosen Chen Shuqiang Jiao Weili Song Ya Chen;Kailun Zhang;Na Li;Wei Guan;Zhiyuan Li;Haosen Chen;Shuqiang Jiao;Weili Song

作者机构：Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and StructuresBeijing Institute of TechnologyBeijing 100081China State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingBeijing 100083China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2023年第30卷第1期

页      面：33-43页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：financially supported by the National Key R&D Program of China (No. 2018YFB0104400) the National Natural Science Foundation of China (Nos. 52074036, 51725401, and 51874019) Beijing Municipal Science and Technology Commission (No. Z191100002719007) 

主　　题：electrochemically manipulatable aluminum battery graphite intercalation compounds transport behavior electromagnetic interference shielding 

摘      要：Pyrolytic graphite (PG) with highly aligned graphene layers,present anisotropic electrical and thermal transport behavior,which is attractive in electronic,electrocatalyst and energy *** pristine PG could meeting the limit of electrical conductivity (~2.5×10^(4) S·cm^(−1)),although efforts have been made for achieving high-purity sp^(2) hybridized *** manipulating the electrical conductivity of PG,a facile and efficient electrochemical strategy is demonstrated to enhance electrical transport ability via reversible intercalation/de-intercalation of AlCl_(4)^(-)into the graphitic *** the stage evolution at different voltages,variable electrical and thermal transport behaviors could be achieved via controlling AlCl_(4)^(-)concentrations in the PG because of substantial variation in the electronic density of *** evolution leads to decoupled electrical and thermal transport (opposite variation trend) in the in-plane and out-of-plane directions,and the in-plane electrical conductivity of the pristine PG (1.25×10^(4) S·cm^(−1)) could be massively promoted to 4.09×10^(4) S·cm(AlCl_(4)^(-)intercalated PG),much better than the pristine bulk graphitic papers used for the electrical transport and electromagnetic *** fundamental mechanism of decoupled transport feature and electrochemical strategy here could be extended into other anisotropic conductive bulks for achieving unusual behaviors.