Large-scale doping-engineering enables boron/nitrogen dual-doped porous carbon for high-performance zinc ion capacitors  

作　　者：Chun-Liu Zhu Huan-Lei Wang Wen-Jie Fan Sheng-Li Zhai Xing-Jie Wang Jing Shi Ming-Hua Huang Shuai Liu Zhi Li Jing-Wei Chen 

机构地区：[1]School of Materials Science and Engineering,Ocean University of China,Qingdao 266100,China [2]Department of Chemical and Materials Engineering,University of Alberta,Edmonton AB T6G 2V4,Canada

出　　处：《Rare Metals》2022年第7期2505-2516,共12页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Nos. 22179123 and 21471139);Shandong Provincial Natural Science Foundation, China (No. ZR2020ME038);Shandong Provincial Key R&D Plan and the Public Welfare Special Program, China (No. 2019GGX102038);the Fundamental Research Funds for the Central Universities (No. 201941010)

摘　　要：Zinc ion capacitors(ZICs)have drawn increas-ing interest in energy storage devices because of their economic benefits,high safety,and long cycling life.Nevertheless,the lack of high-performance cathodes for ZICs remains a key challenge.Here,we fabricated B,N co-doped porous carbon(BN-C)via a salt template strategy.The aqueous ZICs assembled from BN-C cathode delivered a high capacity of 190.2 mAh·g^(-1)and a remarkable energy density of 105.1 Wh·kg^(-1).Moreover,systematic charac-terization verifies that B/N dual-doping promotes the physical adsorption/desorption kinetics of anion and the chemical absorption/desorption kinetics of Zn^(2+),thus improving the electrochemical performance of ZICs.In addition,the quasi-solid-state pouch-type battery exhibited excellent electrochemical durability and mechanical flexi-bility,demonstrating its vast application potential as a flexible power source.Overall,this research not only pre-sents a reasonable approach to the large-scale production of carbon cathode materials with excellent electrochemical performance but also strengthens the essential recognition of the charge storage mechanism of heteroatoms-doped carbon materials.

关 键 词：Heteroatom doping Porous carbon Zinc ion capacitor High energy density Charge storage mechanism 

分 类 号：TQ127.11[化学工程—无机化工] TM53[电气工程—电器]