CoP nanowires coupled with CoMoP nanosheets as a highly efficient cooperative catalyst for hydrogen evolution reaction

Nano Energy, Journal Year: 2019, Volume and Issue: 68, P. 104332 - 104332

Published: Nov. 29, 2019

Language: Английский

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Hierarchical NiMn-layered double hydroxides@CuO core-shell heterostructure in-situ generated on Cu(OH)2 nanorod arrays for high performance supercapacitors

Chemical Engineering Journal, Journal Year: 2019, Volume and Issue: 380, P. 122486 - 122486

Published: Aug. 12, 2019

Language: Английский

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A Glass‐Ceramic with Accelerated Surface Reconstruction toward the Efficient Oxygen Evolution Reaction

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 60(7), P. 3773 - 3780

Published: Nov. 11, 2020

Abstract The effective non‐precious metal catalysts toward the oxygen evolution reaction (OER) are highly desirable for electrochemical water splitting. Herein, we prepare a novel glass‐ceramic (Ni 1.5 Sn@triMPO 4 ) by embedding crystalline Ni Sn nanoparticles into amorphous trimetallic phosphate (triMPO matrix. This unique crystalline‐amorphous nanostructure synergistically accelerates surface reconstruction to active Ni(Fe)OOH, due low vacancy formation energy of in and high adsorption PO 3− at V O sites. Compared control samples, this dual‐phase exhibits remarkably lowered overpotential boosted OER kinetics after reconstruction, rivaling most state‐of‐the‐art electrocatalysts. residual intrinsic sites induce redistribution electron states, thus optimizing OH* OOH* intermediates on oxyhydroxides promoting activity.

Language: Английский

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Porphyrin-based framework materials for energy conversion

Deleted Journal, Journal Year: 2022, Volume and Issue: 1, P. e9120009 - e9120009

Published: May 26, 2022

With the increasing demand for fuel causing serious environmental pollution, it is urgent to develop new and environmentally friendly energy conversion devices. These devices, however, require good, inexpensive materials electrodes so on. The multifunctional properties of porphyrins enable framework (e.g., metal-organic frameworks covalent organic frameworks) be applied in devices due their simple synthesis, high chemical stability, abundant metallic active sites, adjustable crystalline structure specific surface area. Herein, types porphyrin structural blocks are briefly reviewed. They can used as ligands or directly assembled with generate high-performance electro-/photo-catalysts. catalysts electro-/photo-catalytic water splitting, carbon dioxide reduction, electrocatalytic oxygen reduction also summarized introduced. At end article, we present challenges porphyrin-based above application corresponding solutions. We expect flourish coming years.

Language: Английский

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Tailoring Binding Abilities by Incorporating Oxophilic Transition Metals on 3D Nanostructured Ni Arrays for Accelerated Alkaline Hydrogen Evolution Reaction

Journal of the American Chemical Society, Journal Year: 2020, Volume and Issue: 143(3), P. 1399 - 1408

Published: Dec. 17, 2020

Developing efficient and inexpensive electrocatalysts for the hydrogen evolution reaction (HER) in alkaline water electrolysis plays a key role renewable energy technology. The slow kinetics of HER solutions, however, has hampered advances high-performance production. Herein, we investigated trends activity with respect to binding energies Ni-based thin film catalysts by incorporating series oxophilic transition metal atoms. It was found that doping atoms enables modulation abilities hydroxyl ions on Ni surfaces, leading first establishment volcano relation between OH-binding activities. In particular, Cr-incorporated catalyst shows optimized as well H-binding facilitating dissociation improving media. Further enhancement catalytic performance achieved introducing an array three-dimensional (3D) nanohelixes (NHs) provide abundant surface active sites effective channels charge transfer mass transport. Cr dopants incorporated into NHs accelerate dissociative adsorption process water, resulting remarkably enhanced activities medium. Our approach can rational design strategy experimental methodology toward bimetallic using earth-abundant elements.

Language: Английский

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Lattice‐Matching Formed Mesoporous Transition Metal Oxide Heterostructures Advance Water Splitting by Active Fe–O–Cu Bridges

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(19)

Published: April 8, 2022

Abstract Developing efficient bifunctional electrocatalysts toward oxygen/hydrogen evolution reactions is crucial for electrochemical water splitting hydrogen production. The high‐performance depend on the catalytically active and highly accessible reaction sites their structural robustness, while rational design of such with desired features avoiding tedious manufacture still challenging. Here, a facile method reported to synthesize mesoporous heterostructured transition metal oxides strongly anchored nickel skeleton (MH‐TMO) containing identified Fe–Cu oxide interfaces high intrinsic activity, easy accessibility intermediates, long‐term stability alkaline reactions. MH‐TMO electrocatalytically Fe–O–Cu bridge has an optimal oxygen binding energy facilitate adsorption/desorption intermediates molecules. Associated mass transport through nanoporous structure, exhibits impressive catalysis, extremely low overpotential around 0.22 V at 10 mA cm −2 Tafel slope (44.5 mV dec −1 ) in 1.0 M KOH, realizing current density 100 as 0.26 V. As result, electrolyzer assembled by catalysts operates outstanding overall water‐splitting output (1.49 V@10 ), outperforming one noble‐metal‐based catalysts.

Language: Английский

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Efficient FeCoNiCuPd thin-film electrocatalyst for alkaline oxygen and hydrogen evolution reactions

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 313, P. 121472 - 121472

Published: May 4, 2022

Language: Английский

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Interface chemistry of two-dimensional heterostructures – fundamentals to applications

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(7), P. 4684 - 4729

Published: Jan. 1, 2021

To harvest the unique properties offered by 2D HSs, creation of well-defined heterointerfaces on a large scale is prerequisite, where chemistry and nature define targeted applications.

Language: Английский

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Co-metal–organic framework derived CoSe2@MoSe2 core–shell structure on carbon cloth as an efficient bifunctional catalyst for overall water splitting

Chemical Engineering Journal, Journal Year: 2021, Volume and Issue: 429, P. 132379 - 132379

Published: Sept. 9, 2021

Language: Английский

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Increasing the active sites and intrinsic activity of transition metal chalcogenide electrocatalysts for enhanced water splitting

Journal of Materials Chemistry A, Journal Year: 2020, Volume and Issue: 8(48), P. 25465 - 25498

Published: Jan. 1, 2020

Strategies for enhancing the electrocatalytic activities of transition metal chalcogenides by increasing number active sites and intrinsic activity.

Language: Английский

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