A one-step and energy-saving method was proposed to synthesize hierarchical and hollow Co(VO 3 ) 2 -Co(OH) 2 composite leaf arrays on carbon cloth, which expressed high capacitance (522 mF cm –2 or 803 F g –1 at the current density of 0.5 mA cm –2 ), good rate capability (79.5% capacitance retention after a 30-fold increase of the current density) and excellent cycling stability (90% capacitance retention after 15 000 charge–discharge cycles) when tested as a supercapacitor electrode.
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Zhang et al. (2018) studied this question.
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