Polyacrylonitrile (PAN) nanofibers were fabricated via electrospinning technology.Ni(OH)2 nanosheets were subsequently loaded on the PAN nanofibers through a solvothermal reaction.By integrating low-temperature calcination and sulfidation treatment,a composite material consisting of NiS nanosheets coated on nitrogen/sulfur co-doped carbon nanofibers (NiS/NSCNF) was successfully synthesized.The morphology and structural properties of the composite were systematically characterized using scanning electron microscopy (SEM),X-ray diffraction (XRD),Raman spectroscopy,and Fourier-transform infrared spectroscopy (FT-IR).Its electrochemical performance was evaluated through cyclic voltammetry (CV),galvanostatic charge-discharge (GCD),and electrochemical impedance spectroscopy (EIS).The results demonstrated that in a 6mol/L KOH electrolyte,the NiS/NSCNF composite delivered a specific capacitance of 826F/g at a current density of 1A/g,and the capacitance retention rate was 85.8% at 10A/g.Remarkably,after 6000 charge-discharge cycles,it retained 92.6% of its initial capacitance,highlighting exceptional cycling stability.An asymmetric supercapacitor (denoted as NiS/NSCNF//AC) assembled with NiS/NSCNF as the cathode and activated carbon (AC) as the anode achieved an energy density of 118Wh/kg at a power density of 800W/kg.Following 6000 GCD cycles,the device maintained a capacitance retention rate of 94.1%.
[1] Godlaveeti S K,G V R,Sangaraju S,et al.High-performance of the ZnO/NiS nanocomposite electrode materials for supercapacitor[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2024,680:132749.
[2] Asghar A,Yousaf M I,Shad N A,et al.Enhanced electrochemical performance of hydrothermally synthesized NiS/ZnS composites as an electrode for super-capacitors[J].Journal of Cluster Science,2021,33(5):2325-2335.
[3] Wu D,Xie X,Zhang J,et al.Embedding NiS nanoflakes in electrospun carbon fibers containing NiS nanoparticles for hybrid supercapacitors[J].Chemical Engineering Journal,2022,446:137262.
[4] Li S,He W,Liu B,et al.One-step construction of three-dimensional nickel sulfide-embedded carbon matrix for sodium-ion batteries and hybrid capacitors[J].Energy Storage Materials,2020,25:636-643.
[5] Liu Q,Hong X,You X,et al.Designing heterostructured metal sulfide core-shell nanoneedle films as battery-type electrodes for hybrid supercapacitors[J].Energy Storage Materials,2020,24:541-549.
[6] Qiu L,Yang W,Zhao Q,et al.NiS nanoflake-coated carbon nanofiber electrodes for supercapacitors[J].ACS Applied Nano Materials,2022,5(5):6192-6200.
[7] Liu Y,Xu X,Shao Z,et al.Metal-organic frameworks derived porous carbon,metal oxides and metal sulfides-based compounds for supercapacitors application[J].Energy Storage Materials,2020,26:1-22.
[8] Dai C,Hu L,Wang M Q,et al.Uniform α-Ni(OH)2 hollow spheres constructed from ultrathin nanosheets as efficient polysulfide mediator for long-term lithium-sulfur batteries[J].Energy Storage Materials,2017,8:202-208.
[9] Shuang W,Huang H,Kong L,et al.Nitrogen-doped carbon shell-confined Ni3S2 composite nanosheets derived from Ni-MOF for high performance sodium-ion battery anodes[J].Nano Energy,2019,62:154-163.
[10] Abdelhamid A A,Yang X,Yang J,et al.Graphene-wrapped nickel sulfide nanoprisms with improved performance for Li-ion battery anodes and supercapacitors[J].Nano Energy,2016,26:425-437.
[11] Guan Y,Hu K,Su N,et al.Review of NiS-based electrode nanomaterials for supercapacitors[J].Nanomaterials (Basel),2023,13(6).
[12] Miao Y,Zhang X,Zhan J,et al.Hierarchical NiS@CoS with controllable core-shell structure by two-step strategy for supercapacitor electrodes[J].Advanced Materials Interfaces,2020,7(3):1901618.
[13] Nachimuthu S,Kannan K,Thangavel S,et al.Electrochemical and magnetic properties of 3D porous NiS/CuS nanocompo-sites[J].Applied Surface Science Advances,2022,7:100209.
[14] Lu X,Wang C,Favier F,et al.Electrospun nanomaterials for supercapacitor electrodes:designed architectures and electrochemical performance[J].Advanced Energy Materials,2017,7(2):1601301.
[15] Marriam I,Wang Y,Tebyetekerwa M.Polyindole batteries and supercapacitors[J].Energy Storage Materials,2020,33:336-359.
[16] Nagaraju G,Sekhar S C,Ramulu B,et al.High-performance hybrid supercapacitors based on MOF-derived hollow ternary chalcogenides[J].Energy Storage Materials,2021,35:750-760.
[17] Qin Q,Chen L,Wei T,et al.MoS2/NiS yolk-shell microsphere-based electrodes for overall water splitting and asymmetric supercapacitor[J].Small,2019,15(29):1803639.
[18] Sun S,Luo J,Qian Y,et al.Metal-organic framework derived honeycomb Co9S8@C composites for high-performance supercapacitors[J].Advanced Energy Materials,2018,8(25):1801080.
[19] Wang X,Zhao S X,Dong L,et al.One-step synthesis of surface-enriched nickel cobalt sulfide nanoparticles on graphene for high-performance supercapacitors[J].Energy Storage Materials,2017,6:180-187.
[20] Yang D C,Kim D Y,Kim K S.Quantum monte carlo study of the water dimer binding energy and halogen-pi interactions[J].The Journal of Physical Chemistry,2019,123(36):7785-7791.
[21] Yang J,Duan X,Guo W,et al.Electrochemical performances investigation of NiS/rGO composite as electrode material for supercapacitors[J].Nano Energy,2014,5:74-81.
基金资助
国家留学基金委地方合作项目(202208410324);河南省高等学校重点研发项目(23A430008,24A540005);河南省重点研发与推广专项(科技攻关)指导项目(222102230047);中国纺织工业联合会科技指导项目(2021047);2023年第一批教育部产学合作协同育人项目(230800383251919,230825135207276);河南省大学生创新创业计划训练项目(202410465050,202410465060,202410465072);中原工学院青年骨干教师项目(2024XQG05,2024XQG06);中原工学院研究生教育改革与质量提升工程项目(2023059)
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