NiCo₂O₄nanosheets grown on interconnected honeycomb-like porous biomass carbon for high performance asymmetric supercapacitors

Abstract

An interconnected honeycomb-like structure of the HLPBC/NiCo2O4 composite was successfully prepared by carbonization combined with a facile hydrothermal process.

A MnCo2O4@NiMoO4 Core‐Shell Composite Supported on Nickel Foam as a Supercapacitor Electrode for Energy Storage

“…Transition metal oxides have been widely researched as electrode materials for supercapacitors ,. Among the transition metal oxides, the ternary metal oxides such as NiCo 2 O 4 , MnCo 2 O 4 and NiMoO 4 have shown better pseudocapacitive performances than their binary metal oxide counterparts due to their richer redox characteristics and higher conductivity . Furthermore, the morphology of the electrode materials has significant influence on their electrochemical performances ,.…”

“…[10,11] Among the transition metal oxides, the ternary metal oxides such as NiCo 2 O 4 , MnCo 2 O 4 and NiMoO 4 have shown better pseudocapacitive performances than their binary metal oxide counterparts due to their richer redox characteristics and higher conductivity. [12][13][14][15][16][17] Furthermore, the morphology of the electrode materials has significant influence on their electrochemical performances. [18,19] Some particular morphology such as porous nanowires and nanoflakes with high surface to volume ratio can provide more active sites for electrochemical energy storage.…”

3D Hollow Flower‐like CoWO4 Derived from ZIF‐67 Grown on Ni‐foam for High‐Performance Asymmetrical Supercapacitors

“…Meanwhile, the orbital electrons of Co 3+ are deconvoluted into Co 2p 1/2 (779.1 eV) and Co 2p 3/2 (793.0 eV) peaks. Additionally, the two shakeup satellite peaks of Co 2p correspond to relative peaks locating 786.7 and 802.8 eV . What's more, the W 4 f is divided into W 4f 5/2 (36.8 eV) and W 4f 7/2 (34.7 eV) peaks (Figure c), indicating the existence of W 6+ in the 3D−H CoWO 4 /NF .…”

“…What's more, the W 4 f is divided into W 4f 5/2 (36.8 eV) and W 4f 7/2 (34.7 eV) peaks (Figure c), indicating the existence of W 6+ in the 3D−H CoWO 4 /NF . Simultaneously, the O 1s peaks of sample locates at 530 eV and 532.7 eV, which is attributed to O−H from surface‐absorbed water and M−O bonds (M: metal), respectively (Figure d) . These results mentioned above could absolutely inspect the addition of desired element in the 3D−H CoWO 4 /NF.…”

Compressed Nanolamella‐Stacked Ni(OH)2/NiCo2O4 Composite as Electrode for Battery‐Type Supercapacitor

“…When the voltage window was set as 0–1.6 V, a significant polarization phenomenon occurred. Therefore, the test voltage window for the hybrid capacitor was chosen in the range of 0–1.5 V (Figure S3) . Figure a was the CV curves measured at the scan rate ranging from 10 to 50 mV s −1 .…”