Tuning morphology and conductivity in two-step synthesis of zinc-cobalt oxide and sulfide hybrid nanoclusters as highly-performed electrodes for hybrid supercapacitors

作者: Yafei Li , Hongyan Gao , Zhe Sun , Qiqi Li , Yuting Xu

DOI: 10.1007/S10008-018-4035-7

关键词:

摘要: We reported a facile two-step hydrothermal procedure to prepare zinc-cobalt oxide and sulfide hybrid nanoclusters (ZCOSH NCs), initialized by the synthesis of metal oxides followed partial substitution oxygen with sulfur. Benefiting from their morphological features sulfur, both electrical conductivity further actual specific capacitance ZCOSH NCs were apparently improved compared binary nanosheets (ZCO NSs). Moreover, its cycling stability has also been significantly enhanced. Its excellent achieved 2176.7 F g−1 at 1 A g−1, which was six times larger than ZCO NSs (367.2 F g−1 1 A g−1). supercapacitor assembled using as positive electrode activated carbon negative electrode. This device presented higher value 116.3 F g−1 1 A g−1 corresponding energy 41.4 W h kg−1 power 801.3 W kg−1, superior after 3000 charge-discharge tests. study confirmed feasible unique approach balance electric sulfides within this NC.

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