Both MXene and zeolitic imidazolate frame-work(ZIF)derivatives are tend to agglomerate during the compound process,which adversely affects their electro-chemical properties.To alleviate this phenomenon,few-layer MXene was stripped by mechanical method,and electrostatic self-assembly with ZIF-67 in the presence of cationic surfactants.Furthermore,CoNi2S4/MXene com-posite was synthesized by the facile hydrothermal reaction.CoNi2S4 well retained the cube frame structure of the ZIF-67 with the sagging outer frame and rough surface.In the composite,CoNi2S4 nanocubes were interlinked by MXene nanosheets,which can effectively improve the structural stability and make full use of the active surface.CoNi2S4/MXene composite electrode exhibits an outperforming specific capacitance(751 C.g-1at 1 A·g-1),far higher than that of pure CoNi2S4(600 C·g-1 at 1 A·g-1).An asym-metric supercapacitor(CoNi2S4/MXene//reduced graphene oxide(RGO))assembling delivers high energy density of 33.8 Wh·kg-1 and excellent cycling performance.This study indicates the potential of MXene/ZIF derivatives in the application of supercapacitor.

Ji-Qiu Qi;Meng-Yuan Huang;Chen-Ya Ruan;Dong-Dong Zhu;Lei Zhu;Fu-Xiang Wei;Yan-Wei Sui;Qing-Kun Meng

Jiangsu Province Engineering Laboratory of High Efficient Energy Storage Technology and Equipments,School of Materials Science and Physics,China University of Mining and Technology,Xuzhou 221116,China;Key Laboratory of Air-Driven Equipment Technology of Zhejiang Province,Quzhou University,Quzhou 324000,China

稀有金属（英文版）

[1]Ji-Qiu Qi;Meng-Yuan Huang;Chen-Ya Ruan;Dong-Dong Zhu;Lei Zhu;Fu-Xiang Wei;Yan-Wei Sui;Qing-Kun Meng-.Construction of CoNi2S4 nanocubes interlinked by few-layer Ti3C2Tx MXene with high performance for asymmetric supercapacitors)[J].稀有金属（英文版）,2022(12):4116-4126

sagging

Construction,CoNi2S4,nanocubes,interlinked,by,few,layer,Ti3C2Tx,MXene,performance,asymmetric,supercapacitors,Both,zeolitic,imidazolate,frame,work,ZIF,derivatives,are,tend,agglomerate,during,compound,process,which,adversely,affects,their,chemical,properties,To,alleviate,this,phenomenon,was,stripped,mechanical,method,electrostatic,self,assembly,presence,cationic,surfactants,Furthermore,synthesized,facile,hydrothermal,reaction,well,retained,structure,outer,rough,surface,In,composite,were,nanosheets,can,effectively,improve,structural,stability,make,full,use,active,electrode,exhibits,outperforming,specific,capacitance,1at,far,higher,than,that,pure,An,reduced,graphene,oxide,RGO,assembling,delivers,energy,density,Wh,excellent,cycling,This,study,indicates,potential,application

0.604043