3D hierarchical oxygen-deficient AlCoNi-(oxy)hydroxides/N-doped carbon hybrids enable efficient battery-type asymmetric supercapacitor

查看全文 作　　者：Renjie [1]Zhang;Wei [1]Zhang;Qun [1]Yang;Jidong [2,3]Dong;Lina [1]Ma;Zaixing [3,4]Jiang;Yudong [3]Huang 机构地区：[1]College of Chemistry and Chemical Engineering,Qingdao University,Qingdao 266071,Shandong,China;[2]Material Science and Engineering College Northeast Forestry University,Harbin 150040,Heilongjiang,China;[3]MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage,State Key Laboratory of Urban Water Resource and Environment,School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin 150001,Heilongjiang,China;[4]Chongqing Research Institute of HIT,Chongqing 401135,China 出　　处：《Journal of Energy Chemistry》索引2022年第31卷第9期,共9页 基　　金：financial support from the Chang Jiang Scholars Program(51073047);the National Natural Science Foundation of China(51773049);the China Aerospace Science and Technology Corporation-Harbin Institute of Technology Joint Center for Technology Innovation Fund(HIT15-1A01);the Harbin city science and technology projects(2013DB4BP031 and RC2014QN017035);the Fundamental Research Funds for the Central Universities(HIT.OCEF.2021028);the Natural Science Funds of Heilongjiang Province(ZD2019B001);the Heilongjiang Touyan Team(HITTY-20190033);the funds from Chongqing Research Institute of HIT。 摘　　要：Polynary transition-metal layered hydroxides are promising energy materials owing to their unique architecture,impressive theoretical capacities,and adjustable compositions.Regulating the dimensional morphology and active sites/redox states are the keys to electrochemical performance enhancement.Distinguish from the reported mono-metal or binary-metal configurations,a new ternary-metal AlCoNi-LTH is coanchored onto a highly graphitized porous N-doped carbon matrix to develop superior 3D hierarchical microporous functional energy hybrids AlCoNi-LTHs/NAC.The constructed hybrids possess superior structural durability,good electrical conductivity,and rich active sites due to the strong interfacial conjunction and favorable synergistic effect between the doped porous carbon and AlCoNi nanosheets.Consequently,the AlCoNi-LTHs/NAC hybrids demonstrate high conductivity,reasonable specific surface area,and superior specific capacitance,and the assembled hybrid battery-type supercapacitor reveals an ideal energy density of 72.6 Wh kg^(-1)at a power density of 625 W kg^(-1),which is superior to the reported devices.This strategy opens a platform to rationally design polynary transition-metal layered hydroxides and their hybrids for efficient supercapacitors. 关 键 词：N-doped carbon Layered tri-metal hydroxides NANOHYBRID Hybrid battery-type asymmetric supercapacitor Coupling synergy