TY - JOUR
T1 - Boosting the energy density of highly efficient flexible hybrid supercapacitors via selective integration of hierarchical nanostructured energy materials
AU - Yedluri, Anil Kumar
AU - Sangaraju, Sambasivam
AU - Ahmed, Shamim Hira
AU - Kamran, Zeb
AU - Waqar, Uddin
AU - T.N.V., Krishna
AU - Dasha, Kulurumotlakatla Kumar
AU - Ihab, M. Obaidat
AU - Hee-Je, Kim
N1 - Funding Information:
This work was supported by a 2-Year Research Grant of Pusan National University. In addition, this work was financially supported by BK 21 PLUS, Creative Human Resource Development Program for IT Convergence (NRF-2015R1A4A1041584), Pusan National University, Busan, South Korea. We would like to thank KBSI, Busan for SEM, TEM, XRD, XPS and EDX analysis. Also, this work was financially supported by UAEU Program for Advanced Research (UPAR) under Grant no. 31S312.
Funding Information:
This work was supported by a 2-Year Research Grant of Pusan National University . In addition, this work was financially supported by BK 21 PLUS, Creative Human Resource Development Program for IT Convergence ( NRF-2015R1A4A1041584 ), Pusan National University, Busan, South Korea. We would like to thank KBSI, Busan for SEM, TEM, XRD, XPS and EDX analysis. Also, this work was financially supported by UAEU Program for Advanced Research (UPAR) under Grant no. 31S312 .
Publisher Copyright:
© 2020
PY - 2020/12/20
Y1 - 2020/12/20
N2 - 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 NWAs//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.
AB - 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 NWAs//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.
KW - Energy storage device
KW - FeO@NF NFAs
KW - Highly efficient FHSCs device
KW - Multicomponent battery-type nanostructured composite
KW - Ni(OH) NFAs@ZnO–ZnCoO NWAs
KW - Supercapacitor
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U2 - 10.1016/j.electacta.2020.137318
DO - 10.1016/j.electacta.2020.137318
M3 - Article
AN - SCOPUS:85093652958
SN - 0013-4686
VL - 364
JO - Electrochimica Acta
JF - Electrochimica Acta
M1 - 137318
ER -