Hollow polyhedron structure of amorphous Ni-Co-S/Co(OH)2 for high performance supercapacitors

Zhang, Xixi; Qu, Guangmeng; Wang, Zonghua; Xiang, Guotao; Hao, Shuhua; Wang, Xiaoke; Xu, Xijin; Ma, Wenxuan; Zhao, Gang

doi:10.1016/j.cclet.2021.01.042

Cited by 49 publications

(9 citation statements)

References 47 publications

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“…The intercept of the i versus ν 1/2 plot in the i -axis also shows the current contribution due to double-layer formation at the electrode/electrolyte interface, which happens majorly because of the presence of conductive carbon in the NiCo 2 O 4 electrode . The specific capacity ( Q S , C g –1 ) values of NiCo 2 O 4 were derived at different scan rates using eq where m (in gm) corresponds to the mass of NiCo 2 O 4 in the fabricated working electrode and ∫ idV is the integral area of the corresponding CV curves at various scan rates.…”

Section: Resultsmentioning

confidence: 99%

Ribbon-like Nickel Cobaltite with Layer-by-Layer-Assembled Ordered Nanocrystallites for Next-Generation All-Solid-State Hybrid Supercapatteries

2022

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In the context to develop ultra-efficient electrode materials with good physicoelectrochemical and electrostructural properties, for their application in high-performance supercapatteries, herein, a facile tartrate-mediated inhibited crystal growth method is reported to engineer thoroughly uniform ribbonlike nickel cobaltite (NiCo 2 O 4 ) microstructure with unique layerby-layer-assembled nanocrystallites. This material demonstrates significant kinetic reversibility, good rate efficiency and bulk diffusibility of the electroactive ions, and a predominant semiinfinite diffusion mechanism during the redox-based charge storage process. This material also shows bias-potential-independent equivalent series resistance, very low charge-transfer resistance, and diagonal Warburg profile, corresponding to the ion diffusion occurring during the electrochemical processes in supercapacitors and batteries. Further, the fabricated NiCo 2 O 4 -based all-solid-state supercapattery (NiCo 2 O 4 ||N-rGO) delivers excellent rate-specific capacity, very low internal resistance, good electrochemical and electrostructural stability (∼94% capacity retention after 10,000 charge−discharge cycles), energy density (31 W h kg −1 ) of a typical rechargeable battery, and power density (13,003 W kg −1 ) of an ultra-supercapacitor. The ultimate performance of the supercapattery is ascribed to low-dimensional crystallites, ordered inter-crystallite and channel-type bulk and boundary porosity, multiple reactive equivalents, enhanced electronic conductivity, and "ion buffering pool" like behavior of ribbon-like NiCo 2 O 4 , supplemented with enhanced electronic and ionic conductivities of N-doped rGO (negative electrode) and PVA/KOH gel (electrolyte separator), respectively.

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Section: Resultsmentioning

confidence: 99%

Ribbon-like Nickel Cobaltite with Layer-by-Layer-Assembled Ordered Nanocrystallites for Next-Generation All-Solid-State Hybrid Supercapatteries

2022

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“…The capacitance trend is analogous to the experimental observations, and the values are in good agreement with recent reports of similar systems. 40–45…”

Section: Theoretical Investigation and Discussionmentioning

confidence: 99%

MoWS₂ nanosheets incorporated nanocarbons for high-energy-density pseudocapacitive negatrode material and hydrogen evolution reaction

Patra

Shaikh

Ghosh

et al. 2022

Sustainable Energy Fuels

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“…77,78 Generally, as the value of b approaches 0.50, the diffusion type of storage governs the electrochemical reaction, while the b value close to 1.0 indicates a contribution from the capacitive storage process. 79–82 Fig. 5(F) reflects the graph of log( i ) vs. log( v ), i.e.…”

Section: Resultsmentioning

confidence: 99%

A high-performance hybrid supercapacitor by encapsulating binder-less FeCoSe₂ nanosheets@NiCoSe₂ nanoflowers in a graphene network

Amiri

Zardkhoshoui

Davarani

et al. 2022

Sustainable Energy Fuels

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Hollow polyhedron structure of amorphous Ni-Co-S/Co(OH)2 for high performance supercapacitors

Cited by 49 publications

References 47 publications

Ribbon-like Nickel Cobaltite with Layer-by-Layer-Assembled Ordered Nanocrystallites for Next-Generation All-Solid-State Hybrid Supercapatteries

Ribbon-like Nickel Cobaltite with Layer-by-Layer-Assembled Ordered Nanocrystallites for Next-Generation All-Solid-State Hybrid Supercapatteries

MoWS₂ nanosheets incorporated nanocarbons for high-energy-density pseudocapacitive negatrode material and hydrogen evolution reaction

A high-performance hybrid supercapacitor by encapsulating binder-less FeCoSe₂ nanosheets@NiCoSe₂ nanoflowers in a graphene network

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Hollow polyhedron structure of amorphous Ni-Co-S/Co(OH)2 for high performance supercapacitors

Cited by 49 publications

References 47 publications

Ribbon-like Nickel Cobaltite with Layer-by-Layer-Assembled Ordered Nanocrystallites for Next-Generation All-Solid-State Hybrid Supercapatteries

Ribbon-like Nickel Cobaltite with Layer-by-Layer-Assembled Ordered Nanocrystallites for Next-Generation All-Solid-State Hybrid Supercapatteries

MoWS2 nanosheets incorporated nanocarbons for high-energy-density pseudocapacitive negatrode material and hydrogen evolution reaction

A high-performance hybrid supercapacitor by encapsulating binder-less FeCoSe2 nanosheets@NiCoSe2 nanoflowers in a graphene network

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Product

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About

MoWS₂ nanosheets incorporated nanocarbons for high-energy-density pseudocapacitive negatrode material and hydrogen evolution reaction

A high-performance hybrid supercapacitor by encapsulating binder-less FeCoSe₂ nanosheets@NiCoSe₂ nanoflowers in a graphene network