Straightforward preparation of nickel selenide nanosheets supported on nickel foam as a highly efficient electrocatalyst for oxygen evolution reaction

Wang, Yuqing; He, Fangzhen; Ren, Yanmei; Lin, Yasu; Zhong, Ming; Su, Bitao; Lei, Ziqiang

doi:10.1016/j.ijhydene.2022.06.009

Cited by 11 publications

(7 citation statements)

References 30 publications

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“…10,11 Moreover, most reported non-precious metal electrocatalysts only exhibit high activity in the single HER or OER. [12][13][14][15] Therefore, the development of inexpensive and efficient nonnoble metal-based bifunctional catalysts is important for electrochemical water splitting.…”

Section: Introductionmentioning

confidence: 99%

Tentacle-like core–shell CoNi₂S₄/C₃N₄ bifunctional electrocatalysts for efficient overall alkaline water splitting

et al. 2023

Dalton Trans.

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Section: Introductionmentioning

confidence: 99%

Tentacle-like core–shell CoNi₂S₄/C₃N₄ bifunctional electrocatalysts for efficient overall alkaline water splitting

et al. 2023

Dalton Trans.

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“…By plotting the above i and v values of the redox peaks from Peak 1 to Peak 5, the results were obtained in Figure S12b, and the b values of the five peaks are respectively assigned to 0.75, 0.69, 0.85, 0.71, and 0.67. It is noticeable that the anode reaction procedure is principally controlled by ion diffusion for b values close to 0.5 and by pseudocapacitance for values close to 1 . According to the obtained b values, it can be concluded that the sodium storage behavior of the CoSe 2 /NiSe 2 @NC–CNTs electrode is primarily controlled by pseudocapacitance procedure.…”

Section: Resultsmentioning

confidence: 72%

“…It is noticeable that the anode reaction procedure is principally controlled by ion diffusion for b values close to 0.5 and by pseudocapacitance for values close to 1. 28 According to the obtained b values, it can be concluded that the sodium storage behavior of the CoSe 2 /NiSe 2 @NC−CNTs electrode is primarily controlled by pseudocapacitance procedure.…”

Section: ■ Results and Discussionmentioning

confidence: 86%

“…In the first step, the CNTs were pretreated with H 2 SO 4 and HNO 3 solutions in a three-neck flask by the conventional acidification method, forming the carboxylic CNTs (CNTs-COOH). Subsequently, 27,28 The above in situ reactions occurred during the consecutive experimental procedure, resulting in the generation of CoSe 2 /NiSe 2 heterostructure wrapped with NC and interconnected with CNTs finally.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The corresponding chemical reaction can be depicted as Ni 3 [Co(CN) 6 ] 2 · x H 2 O → Ni + Co + NC + (CN) 2 + H 2 O + N 2 . , Then, a spontaneous redox reaction between Co (Ni) and vaporous Se contributes to the generation of CoSe 2 (NiSe 2 ). The corresponding chemical reactions can be illustrated as Co (Ni) + Se → CoSe 2 (NiSe 2 ). , The above in situ reactions occurred during the consecutive experimental procedure, resulting in the generation of CoSe 2 /NiSe 2 heterostructure wrapped with NC and interconnected with CNTs finally.…”

Section: Resultsmentioning

confidence: 99%

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Heterostructure Interface Construction of Cobalt/Nickel Diselenides Hybridized with sp²–sp³ Bonded Carbon to Boost Internal/External Sodium and Potassium Storage Dynamics

Chen

Zhou

et al. 2022

ACS Appl. Energy Mater.

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Metal selenides exhibit great potential in energy storage systems owing to their diversified species, large interlayer spaces, and high theoretical specific capacity according to multiple ion-storage behaviors. In this work, heterostructured CoSe 2 / NiSe 2 coupled with sp 3 bonded N-doped carbon coating layers and interconnected with sp 2 bonded carbon nanotubes is synthesized through a room-temperature wet-chemistry approach and a selenization route with Co−Ni Prussian blue analogues as the precursor. The hybrid exhibits enhanced energy storage properties when utilized as an anode material for sodium-and potassium-ion batteries. The excellent performance of the hybrid can be indexed to the delicately design of the CoSe 2 /NiSe 2 heterostructure and the hybridization of it with sp 2 and sp 3 bonded carbonaceous materials synchronously. Experimental and theoretical calculation results demonstrate the heterostructure is constructed to acquire charge transfer driving forces to boost internal reaction dynamics. And there is a combination of the dual advantages of sp 3 and sp 2 bonded carbon, possessing not only the exceptional mechanics buffer capability of N-doped carbon coating layers but also the excellent electrical characteristics of carbon nanotubes to promote external reaction dynamics. In addition, to elucidate the differential sodium/potassium storage capability of the hybrid, theoretical calculations are further performed to indagate the adsorption energy of sodium and potassium on the CoSe 2 /NiSe 2 heterointerface by establishing five Na/K adsorption sites. The research provides an effective strategy for the melioration of internal/external reaction dynamics to deliver ions durably and efficiently in energy storage regions.

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Single‐Site Ni‐Grafted TiO₂ with Diverse Coordination Environments for Visible‐Light Hydrogen Production

Zhang,

Zeng,

Wen

et al. 2023

ChemSusChem

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Solar hydrogen production at a high efficiency holds the significant importance in the age of energy crisis, while the micro‐environment manipulation of active sites on photocatalysts plays a profound role in enhancing the catalytic performance. In this work, a series of well‐defined single‐site Ni‐grafted TiO2 photocatalysts with unique and specific coordination environments, 2,2'‐bipyridine‐Ni‐O‐TiO2 (T‐Ni Bpy) and 2‐Phenylpyridine‐Ni‐O‐TiO2 (T‐Ni Phpy), were constructed with the methods of surface organometallic chemistry combined with surface ligand exchange for visible‐light‐induced photocatalytic hydrogen evolution reaction (HER). A prominent rate of 33.82 μmol•g‐1•h‐1 and a turnover frequency of 0.451 h‐1 for Ni are achieved over the optimal catalyst T‐Ni Bpy for HER, 260‐fold higher than those of Ni‐O‐TiO2. Fewer electrons trapped oxygen vacancies and a larger portion of long‐lived photogenerated electrons (> 3 ns, ~ 52.9%), which were demonstrated by the electron paramagnetic resonance and femtosecond transient IR absorption, are corresponding to the photocatalytic HER activity over the T‐Ni Bpy. The number of long‐lived free electrons injected from the Ni photoabsorber to the conduction band of TiO2 is one of the determining factors for achieving the excellent HER activity.

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Straightforward preparation of nickel selenide nanosheets supported on nickel foam as a highly efficient electrocatalyst for oxygen evolution reaction

Cited by 11 publications

References 30 publications

Tentacle-like core–shell CoNi₂S₄/C₃N₄ bifunctional electrocatalysts for efficient overall alkaline water splitting

Tentacle-like core–shell CoNi₂S₄/C₃N₄ bifunctional electrocatalysts for efficient overall alkaline water splitting

Heterostructure Interface Construction of Cobalt/Nickel Diselenides Hybridized with sp²–sp³ Bonded Carbon to Boost Internal/External Sodium and Potassium Storage Dynamics

Single‐Site Ni‐Grafted TiO₂ with Diverse Coordination Environments for Visible‐Light Hydrogen Production

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Straightforward preparation of nickel selenide nanosheets supported on nickel foam as a highly efficient electrocatalyst for oxygen evolution reaction

Cited by 11 publications

References 30 publications

Tentacle-like core–shell CoNi2S4/C3N4 bifunctional electrocatalysts for efficient overall alkaline water splitting

Tentacle-like core–shell CoNi2S4/C3N4 bifunctional electrocatalysts for efficient overall alkaline water splitting

Heterostructure Interface Construction of Cobalt/Nickel Diselenides Hybridized with sp2–sp3 Bonded Carbon to Boost Internal/External Sodium and Potassium Storage Dynamics

Single‐Site Ni‐Grafted TiO2 with Diverse Coordination Environments for Visible‐Light Hydrogen Production

Contact Info

Product

Resources

About

Tentacle-like core–shell CoNi₂S₄/C₃N₄ bifunctional electrocatalysts for efficient overall alkaline water splitting

Tentacle-like core–shell CoNi₂S₄/C₃N₄ bifunctional electrocatalysts for efficient overall alkaline water splitting

Heterostructure Interface Construction of Cobalt/Nickel Diselenides Hybridized with sp²–sp³ Bonded Carbon to Boost Internal/External Sodium and Potassium Storage Dynamics

Single‐Site Ni‐Grafted TiO₂ with Diverse Coordination Environments for Visible‐Light Hydrogen Production