NiCoP nanowire@NiCo-layered double hydroxides nanosheet heterostructure for flexible asymmetric supercapacitors

“…These obvious shift phenomenons of Ni 2p and P 2p indicate the possible existence of strong electronic interactions and electron transfer at the interface between Ni2P and Ni(OH)2 [45]. The strong electronic interaction can generate internal electric fields, resulting in the improvement of electronic conductivity at the interfaces [34]. These results suggest that the in-situ growth of Ni(OH)2 may greatly affect the electrochemical performance of Ni2P.…”

Section: Assembly Of the Hybrid Supercapacitor Devicementioning

confidence: 91%

“…Hierarchical core-shell architectures are proposed to be a kind of hybrid nanostructures that can enlarge the surface/interface area, improve the contact of electrode/electrolyte and shorten the channel of ion diffusion [31][32][33]. Especially, properly constructing core-shell architectures composited of core with large electrical conductivity and shell with pseudo-capacitivity are promised to be of great significance for supercapacitors [34,35]. The particular heterostructure may induce internal electric fields and discontinuous charges at the interface, which can enhance the electric/ionic conductivity and improve the redox reaction kinetics.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Ni2P@Ni(OH)2 architectures supported on carbon cloth as battery-type electrodes for hybrid supercapacitors with boosting specific capacitance and cycle stability

Lan

Xing

Zong

et al. 2021

J Mater Sci: Mater Electron

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In this work, a novel binder-free electrode, in which three-dimensional porous Ni2P@Ni(OH)2 nanosheet arrays were in-situ grown on carbon cloth (CC), is rationally designed for supercapacitor applications. In comparison with Ni2P@CC, the Ni2P@Ni(OH)2@CC electrode represents superior electrochemical characteristics: the gravimetric capacitance and areal capacitance are boosted to be 632 C g -1 and 0.73 C cm -2 at 1 mA cm -2 , about 2 and 2.7 times larger than those of Ni2P@CC (321 C g -1 and 0.27 C cm -2 ), respectively; the rate capability is improved to be 63.3% from 1 to 2 10 mA cm -2 , about 1.5 times larger than Ni2P@CC (42.9%); the cycle stability is enhanced to be 81.4% after cycles, about 1.6 times larger than Ni2P/CC (51.8%).The assembly Ni2P@Ni(OH)2@CC//AC hybrid supercapacitor device shows high energy density of 23.5 Wh kg -1 at a power density of 1158.0 W kg -1 and good cycling stability of 75.2% maintenance after 5000 cycles. Benefiting from the combined advantages of high electronic conductivity and large specific capacitance of Ni2P, superior anion exchanging/intercalating capacity of Ni(OH)2, excellent flexibility of carbon cloth and special hierarchical architecture with large surface area, the Ni2P@Ni(OH)2@CC electrode is promised to be a good candidate for supercapacitors.

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“…indicate the possible existence of strong electronic interactions and electron transfer at the interface between Ni2P and Ni(OH)2 [45]. The strong electronic interaction can generate internal electric fields, resulting in the improvement of electronic conductivity at the interfaces [34]. These results suggest that the in-situ growth of Ni(OH)2 may greatly affect the electrochemical performance of Ni2P.…”

Section: Assembly Of the Hybrid Supercapacitor Devicementioning

confidence: 92%

Hierarchical Ni2P@Ni(OH)2 Architectures Supported On Carbon Cloth As Battery-Type Electrodes For Hybrid Supercapacitors With Boosting Specific Capacitance and Cycle Stability

Lan¹,

Xing²,

Zong³

et al. 2021

Preprint

View full text Add to dashboard Cite

In this work, a novel binder-free electrode, in which three-dimensional porous Ni2P@Ni(OH)2 nanosheet arrays were in-situ grown on carbon cloth (CC), is rationally designed for supercapacitor applications. In comparison with Ni2P@CC, the Ni2P@Ni(OH)2@CC electrode represents superior electrochemical characteristics: the gravimetric capacitance and areal capacitance are boosted to be 632 C g-1 and 0.73 C cm-2 at 1 mA cm-2, about 2 and 2.7 times larger than those of Ni2P@CC (321 C g-1 and 0.27 C cm-2), respectively; the rate capability is improved to be 63.3% from 1 to 10 mA cm-2, about 1.5 times larger than Ni2P@CC (42.9%); the cycle stability is enhanced to be 81.4% after 1000 cycles, about 1.6 times larger than Ni2P/CC (51.8%). The assembly Ni2P@Ni(OH)2@CC//AC hybrid supercapacitor device shows high energy density of 23.5 Wh kg-1 at a power density of 1158.0 W kg-1 and good cycling stability of 75.2% maintenance after 5000 cycles. Benefiting from the combined advantages of high electronic conductivity and large specific capacitance of Ni2P, superior anion exchanging/intercalating capacity of Ni(OH)2, excellent flexibility of carbon cloth and special hierarchical architecture with large surface area, the Ni2P@Ni(OH)2@CC electrode is promised to be a good candidate for supercapacitors.

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NiCoP nanowire@NiCo-layered double hydroxides nanosheet heterostructure for flexible asymmetric supercapacitors

Cited by 226 publications

References 46 publications

Chemical Modifications of Layered Double Hydroxides in the Supercapacitor

Chemical Modifications of Layered Double Hydroxides in the Supercapacitor

Hierarchical Ni2P@Ni(OH)2 architectures supported on carbon cloth as battery-type electrodes for hybrid supercapacitors with boosting specific capacitance and cycle stability

Hierarchical Ni2P@Ni(OH)2 Architectures Supported On Carbon Cloth As Battery-Type Electrodes For Hybrid Supercapacitors With Boosting Specific Capacitance and Cycle Stability

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