Bubble‐Guidance Breaking Gas Shield for Highly Efficient Overall Water Splitting

Advanced Materials, Год журнала: 2024, Номер 36(41)

Опубликована: Авг. 13, 2024

Abstract Overall water splitting is a promising technology for sustainable hydrogen production, but the primary challenge removing bubbles from electrode surface quickly to increase production. Inspired by directional fluid transport properties of natural biological surfaces like Nepenthes peristome and Morpho butterfly's wings, here strategy demonstrated achieve highly efficient overall bubble‐guidance electrode, that is, an anisotropic groove‐micro/nanostructured porous (GMPE). Gradient groove micro/nanostructures on GMPE serve as high‐speed bubble transmission channels exhibit superior capabilities. The synergistic effect asymmetric Laplace pressure generated between microscale structure patterns buoyancy along pushes produced directionally spread, transport, detach in time. Moreover, low adhesive nanosheet arrays are beneficial reduce size release frequency, which cooperatively improve mass transfer with structure. Notably, outperforms planar‐micro/nanostructured (PMPE) hydrogen/oxygen evolution reactions, GMPE||GMPE showing better performance than commercially available RuO 2 ||20 wt.% Pt/C. This work improves electrodes kinetics electrochemical reactions at solid‐liquid‐gas interfaces, offering insight designing preparing gas‐involved photoelectrochemical electrodes.

Язык: Английский

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Adsorption of butyric acid and butyl acetate on arsenaluminane nanosheets based on first-principles study

Adsorption, Год журнала: 2024, Номер unknown

Опубликована: Сен. 21, 2024

Язык: Английский

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Fabrication of 0D/2D CoFe2O4/CoFe LDH composite intruded within CNTs network as a high-performance electrocatalyst for oxygen evolution and hydrogen evolution reactions

Results in Physics, Год журнала: 2024, Номер 60, С. 107702 - 107702

Опубликована: Апрель 24, 2024

Язык: Английский

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Bubble Dynamics during Hydrogen Evolution Reaction over Fluidizable Electrocatalyst Particles

Industrial & Engineering Chemistry Research, Год журнала: 2025, Номер 64(9), С. 5087 - 5098

Опубликована: Фев. 21, 2025

Gas bubble adhesion, a ubiquitous phenomenon in electrochemical gas-evolving reactions, reduces the hydrogen evolution reaction (HER) activity water electrolysis. Understanding dynamics of gas detachment and its dependence on force balance is crucial for manipulating departure, but it remains insufficiently investigated. Here, we found that differ markedly between fluidizable stationary electrocatalysts, with electrocatalysts minimizing adhesion showing 37-fold increase HER rate constant. This enhancement attributed to accelerated driven by fluidization effect electrocatalyst particles. Specifically, transition from marks shift flat particulate model, introducing promoting effects arising particle movement spin-induced centrifugal collision-triggered coalescence. Consequently, measured approaches intrinsic value. work highlights as an effective strategy eliminate thereby exposing nearly all active sites electrocatalytic reactions.

Язык: Английский

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Robust self-standing multiscale engineered Ni(OH)2 film for flexible high-capacity supercapacitor

Journal of Power Sources, Год журнала: 2025, Номер 641, С. 236892 - 236892

Опубликована: Март 28, 2025

Язык: Английский

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