Defect Engineering of Disordered Carbon Anodes with Ultra-High Heteroatom Doping Through a Supermolecule-Mediated Strategy for Potassium-Ion Hybrid Capacitors

作     者：Lei Zhao Shirong Sun Jinxin Lin Lei Zhong Liheng Chen Jing Guo Jian Yin Husam N.Alshareef Xueqing Qiu Wenli Zhang Lei Zhao;Shirong Sun;Jinxin Lin;Lei Zhong;Liheng Chen;Jing Guo;Jian Yin;Husam N.Alshareef;Xueqing Qiu;Wenli Zhang

作者机构：Guangdong Provincial Key Laboratory of Plant Resources BiorefinerySchool of Chemical Engineering and Light IndustryGuangdong University of Technology(GDUT)100 Waihuan Xi RoadPanyu DistrictGuangzhou 510006People’s Republic of China Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory)Jieyang 515200People’s Republic of China Key Laboratory of Dielectric and Electrolyte Functional Material Hebei ProvinceSchool of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao 066004People’s Republic of China Materials Science and EngineeringPhysical Science and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955‑6900Saudi Arabia School of Advanced ManufacturingResearch Institute of Green Chemical Engineering and Advanced MaterialsGuangdong University of Technology(GDUT)JieyangJieyang 515200People’s Republic of China 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2023年第15卷第3期

页      面：248-265页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 

基　　金：the financial support from the National Natural Science Foundation of China(22108044,22208061) the Research and Development Program in Key Fields of Guangdong Province(2020B1111380002) the Basic Research and Applicable Basic Research in Guangzhou City(202201010290) the financial support from the Guangdong Provincial Key Laboratory of Plant Resources Biorefinery(2021GDKLPRB07) 

主　　题：Defect Heteroatom Active sites Supramolecule Potassium-ion hybrid capacitors 

摘      要：Amorphous carbons are promising anodes for high-rate potassium-ion *** low-temperature annealed amorphous carbons display unsatisfactory ***-induced defect engineering of amorphous carbons could enhance their reversible ***,most lignocellulose biomasses lack heteroatoms,making it a challenge to design highly heteroatom-doped carbons(10 at%).Herein,we report a new preparation strategy for amorphous carbon ***/sulfur co-doped lignin-derived porous carbons(NSLPC)with ultra-high nitrogen doping levels(21.6 at%of N and 0.8 at%of S)from renewable lignin biomacromolecule precursors were prepared through a supramolecule-mediated pyrolysis *** supermolecule/lignin composite decomposes forming a covalently bonded graphitic carbon/amorphous carbon intermediate product,which induces the formation of high heteroatom doping in the obtained *** unique pyrolysis chemistry and high heteroatom doping of NSLPC enable abundant defective active sites for the adsorption of K+and improved *** NSLPC anode delivered a high reversible capacity of 419 mAh g^(-1)and superior cycling stability(capacity retention of 96.6%at 1 A g^(-1)for 1000 cycles).Potassiumion hybrid capacitors assembled by NSLPC anode exhibited excellent cycling stability(91%capacity retention for 2000 cycles)and a high energy density of 71 Wh kg^(-1)at a power density of 92 W kg^(-1).