期刊
ELECTROCHIMICA ACTA
卷 364, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2020.137318
关键词
Multicomponent battery-type nanostructured composite; Ni(OH)(2) NFAs@ZnO-ZnCo2O4 NWAs; Fe2O3@NF NFAs; Highly efficient FHSCs device; Supercapacitor; Energy storage device
资金
- Pusan National Univorsity
- BK 21 PLUS, Creative Human Resource Development Program for IT Convergence, Pusan National University, Busan, South Korea [NRF-2015R1A4A1041584]
- UAEU Program for Advanced Research (UPAR) [31S312]
A preeminent technique to boost the energy density of flexible hybrid supercapacitor (FHSCs) is to develop unique, extremely efficient, and smart positive and negative current collectors with hierarchical nanoarchitectures integration of various electroactive materials. Herein, we present a facile and flexible approach towards the synthesis of selective integration of hierarchical leaflet-like Ni(OH)(2) nanoflake arrays with ZnO-ZnCo2O4 nanowire arrays (Ni(OH)(2) NFAs@ZnO-ZnCo2O4 NWAs) on Ni foam mesh for ultrahigh-capability electrodes. The innovative strategy results in hierarchical architecture with highly altered electronic nanostructure, which not only enhances the specific surface area but also provides ultrafast transportations between ions and electrons. Under electrochemical conditions, the battery-type materials of the hierarchical leaflet-like Ni(OH)(2) NFAs@ZnO-ZnCo2O4 NWAs electrodes show ultrahigh specific capacity of 237.7 mA h g(-1) at 2 A g(-1); this value is 2.16, 1.53 and 1.30 times than those of ZnO-ZnCo2O4 NWAs, CoO NFAs@ZnO-ZnCo2O4 NWAs and ZnO NFAs@ZnO-ZnCo2O4 NWAs electrodes, respectively. Most importantly, in flexible assembly, the Ni(OH)(2) NFAs@ZnO-ZnCo2O4 NWAsi/Fe2O3@NF NFAs FHSCs device delivers an ultrahigh energy density of 80.10 W h kg(-1) a superior life-spam performance, and retention around 98.2% of initial capacity after 5000 cycles. The new innovative strategy could be very promising for future flexible electronics devices. (C) 2020 Elsevier Ltd. All rights reserved.
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