Ni-Co selenide nanowires supported on conductive wearable textile as cathode for flexible battery-supercapacitor hybrid devices

Supercapacitors based on Ti3C2Tx MXene extracted from supernatant and current collectors passivated by CVD-graphene

“…MXene have been studied intensively as emerging inorganic materials with layered structures that have numerous applications, such as energy storage, fuel cells, 3D printing, conductive ink, EMI shielding, and supercapacitor [1][2][3][4][5][6][7][8][9][10][11] . MXene is a class of 2D compounds, which is obtained from transition metal compounds, known as MAX phases that have the general formula M n+1 AX n , where M is generally an early transition metal (Ti, V, Nb, etc.…”

Nanostructure Nickel-Based Selenides as Cathode Materials for Hybrid Battery-Supercapacitors

“…Electrode materials have a great impact on the electrochemical performance of SCs. Consequently, many researchers have taken the preparation of new electrode materials and improving the electrochemical performance of electrode materials as the research direction ( Tan et al, 2020a ; Wang et al, 2020a ; Tan et al, 2020b ; Wang et al, 2020b ; Gan et al, 2020 ; Zhang et al, 2020 ). Nickel-based selenide has a unique electronic structure and high specific capacitance and is considered to be the most promising electrode material for the next generation of the SC among many pseudo capacitance electrode materials.…”

High-performance Bi2O3-NC anodes through constructing carbon shells and oxygen vacancies for flexible battery-supercapacitor hybrid devices

“…1 Battery-type electrode materials rely on strong Faraday reactions to store charges, 2 while capacitive electrode materials are based on three charge storage mechanisms: surface-controlled electric double layer capacitance (EDLC), surface-controlled redox pseudocapacitance and diffusion-controlled intercalation pseudocapacitance. 3 Battery-supercapacitor hybrid (BSH) devices as a type of asymmetric supercapacitors, are typically composed of a high-capacity battery-type electrode such as LiMn 2 O 4 , 4 Bi 2 O 3 , [5][6][7][8] Fe 3 O 4 , 9 Ni 12 P 5 , 10 Ni-Co, 11 Fe 3 C, 12 BiFeO 3 , 13 Bi 2 MoO 6 , 14 and a high-rate capacitive electrode such as carbon nanomaterials, [15][16][17] conducting polymers, 17,18 Nb 2 O 5 , 19 MoS 2 , 20 MXenes, 21 LaMnO 3 . 22 BSH devices emerge as the promising highly-efficient energy storage devices with both high energy density and power density, but usually suffer from the serious mismatch of electrochemical kinetics for cathodes and anodes, mainly due to complex Faradic reactions of the unmatched battery-type electrodes for charge storage, which inevitably degrade rate capability and power density.…”