Electrochemically induced surface reconstruction of Ni-Co oxide nanosheet arrays for hybrid supercapacitors.

ABSTRACT: Transition metal oxides (TMOs) are promising materials for supercapacitors (SCs) because of their high theoretical capacity. However, their finite active sites and poor electrical conductivity lead to reluctant electrochemical performance. Herein, we report a facile electrochemical activation (ECA) method to boost the electrochemical activity of Ni-Co oxide nanosheet arrays (NiCoO NSA) for SCs. Specifically, honeycomb-like NiCoO NSA that was made through a solvothermal method followed by air annealing was activated by simply exerting certain cyclic voltammetry scans (the activated sample is named ac-NiCoO NSA). We have found this treatment results in dramatic surface structure change, forming numerous sub-nanostructures (nanoparticles and nano-leaves) on the NiCoO nanosheets. Rich antisite

SUBMITTER: Wang T 

PROVIDER: S-EPMC10190942 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature