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 pos-sess 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 superca-pacitor reveals an ideal energy density of 72.6 Wh kg-1 at a power density of 625 W kg-1,which is supe-rior to the reported devices.This strategy opens a platform to rationally design polynary transition-metal layered hydroxides and their hybrids for efficient supercapacitors.

Renjie Zhang;Wei Zhang;Qun Yang;Jidong Dong;Lina Ma;Zaixing Jiang;Yudong Huang

College of Chemistry and Chemical Engineering,Qingdao University,Qingdao 266071,Shandong,China;Material Science and Engineering College Northeast Forestry University,Harbin 150040,Heilongjiang,China;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;Chongqing Research Institute of HIT,Chongqing 401135,China

能源化学

[1]Renjie Zhang;Wei Zhang;Qun Yang;Jidong Dong;Lina Ma;Zaixing Jiang;Yudong Huang-.3D hierarchical oxygen-deficient AlCoNi-(oxy)hydroxides/N-doped carbon hybrids enable efficient battery-type asymmetric supercapacitor)[J].能源化学,2022(09):416-423

AlCoNi,Polynary,Distinguish,coanchored,LTHs,superca,polynary

hierarchical,oxygen,deficient,hydroxides,doped,carbon,hybrids,enable,efficient,battery,type,asymmetric,transition,metal,layered,promising,energy,materials,owing,their,unique,architecture,impressive,theoretical,capacities,adjustable,compositions,Regulating,dimensional,morphology,active,sites,redox,states,keys,electrochemical,performance,enhancement,from,reported,mono,binary,configurations,new,ternary,onto,highly,graphitized,matrix,develop,superior,microporous,functional,NAC,constructed,sess,structural,durability,good,electrical,conductivity,rich,due,strong,interfacial,conjunction,favorable,synergistic,effect,between,nanosheets,Consequently,demonstrate,reasonable,specific,surface,area,capacitance,assembled,reveals,ideal,density,Wh,power,which,devices,This,strategy,opens,platform,rationally,design,supercapacitors

0.514203