NiCo2O4 / MnO2 heterostructured nanosheet: influence of preparation conditions on its electrochemical properties

Self-grown MnO 2 nanosheets on carbon fiber paper as high-performance supercapacitors electrodes

“…A simple and convenient way is to use the direct redox reactions between KMnO 4 and carbon in situ at relatively low temperature [22,24,25], or in hot H 2 SO 4 solution [12,26]. In addition, MnO 2 /CFP composites could be obtained by hydrothermal routes [27,28] and electrodeposition methods [29,30]. However, the controllable synthesis of MnO 2 loading on CFP is still rarely explored but fascinating.…”

Bifunctionally active nanosized spinel cobalt nickel sulfides for sustainable secondary zinc–air batteries: examining the effects of compositional tuning on OER and ORR activity

“…[22][23][24][25][26][27] These NiCo 2 S 4 nanostructures, such as spheres and wires, have all exhibited good bifunctional OER and ORR activity, 5,6,8,9,12,[28][29][30] which may be further enhanced by improving electron transfer via the engineering of surface morphology, incorporating highly conductive support materials, and doping with selected tertiary atoms. 5,[31][32][33][34][35][36][37] Previous studies show that NiCo 2 S 4 possesses a mixedvalence redox chemistry. 5,12,18 However, it remains largely not understood how individual cobalt and nickel cations affect the electrocatalytic performance of NiCo 2 S 4 .…”

NiCo2S4-Based Materials for Electrochemical Applications

“…The combination of NiCo2S4 with other materials to construct hierarchical architectures can produce rich pore (micro or meso) and induce the so-called synergistic effect among different components, [52] which can finally affect the electrochemical performance. Up to now, various NiCo2S4-based nanocomposites have been fabricated, such as NiCo2S4@Ni(OH)2, [53,54] carbon@NiCo2S4, [55] NiCo2S4@CoSx, [56] NiCo2S4@Co9S8, [6] CoS@NiCo2S4, [57] NiCo2S4@PPy, [58] MWCNT-COOH@NiCo2S4, [59] NiCo2S4@Ni3S2, [60] NiCo2S4/Ni0.96S, [27] Nix-Co3-xS4/Ni3S2, [61] NiCo2S4@MnO2, [62][63][64] NiCo2S4@ NiMoO4, [65] Ni-Co2S4@NiO, [66] NiCo2S4@NiFe LDH, [67] NiCo2O4/NiCo2S4, [68] NixCo3-xS4@NiCo2O4 [69] , etc.…”