Reduced graphene oxide/Ni foam supported ZIF-67 derived CuCo2S4@CoS2 core-shell heterostructure for boosted electrochemical energy storage

Journal of Energy Storage, Год журнала: 2021, Номер 47, С. 103550 - 103550

Опубликована: Ноя. 9, 2021

Язык: Английский

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Engineering Sulfur Vacancies in Spinel-Phase Co₃S₄ for Effective Electrocatalysis of the Oxygen Evolution Reaction

ACS Omega, Год журнала: 2022, Номер 7(14), С. 12430 - 12441

Опубликована: Март 31, 2022

Restricted by the sluggish kinetics of oxygen evolution reaction (OER), efficient OER catalysis remains a challenge. Here, facile strategy was proposed to prepare hollow dodecahedron constructed vacancy-rich spinel Co3S4 nanoparticles in self-generated H2S atmosphere thiourea. The morphology, composition, and electronic structure, especially sulfur vacancy, cobalt sulfides can be regulated dose Benefitting from atmosphere, anion exchange process vacancy introduction accomplished simultaneously. resulting catalyst exhibits excellent catalytic activity for with low overpotential 270 mV reach current density 10 mA cm-2 small Tafel slope 59 dec-1. Combined various characterizations electrochemical tests, as-proposed defect engineering method could delocalize neighboring electrons expose more Co2+ sites Co3S4, which lowers charge transfer resistance facilitates formation Co3+ active during preactivation process. This work paves new way rational design vacancy-enriched transition metal-based catalysts toward an OER.

Язык: Английский

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Metal organic framework derived P-doping CoS@C with sulfide defect to boost high-performance asymmetric supercapacitors

Journal of Colloid and Interface Science, Год журнала: 2022, Номер 624, С. 385 - 393

Опубликована: Март 19, 2022

Язык: Английский

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In situ growth of bimetallic nickel cobalt sulfide (NiCo2S4) nanowire arrays encapsulated by nitrogen-doped carbon on carbon cloth as binder-free and flexible electrode for high-performance aqueous Zn batteries

Advanced Composites and Hybrid Materials, Год журнала: 2023, Номер 6(3)

Опубликована: Май 5, 2023

Язык: Английский

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Sulphur vacancy induced Co₃S₄@CoMo₂S₄ nanocomposites as a functional electrode for high performance supercapacitors

Journal of Materials Chemistry A, Год журнала: 2023, Номер 11(7), С. 3640 - 3652

Опубликована: Янв. 1, 2023

A new approach to defect enrichment in metal organic framework based hollow chalcogenides showed enhanced capacity on employing them as an electrode material for high performance supercapacitors.

Язык: Английский

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