Deactivation mechanism for water splitting: Recent advances

Carbon Energy, Journal Year: 2024, Volume and Issue: 6(7)

Published: April 17, 2024

Abstract Hydrogen (H 2 ) has been regarded as a promising alternative to fossil‐fuel energy. Green H produced via water electrolysis (WE) powered by renewable energy could achieve zero‐carbon footprint. Considerable attention focused on developing highly active catalysts facilitate the reaction kinetics and improve efficiency of WE. However, stability electrocatalysts hampers commercial viability Few studies have elucidated origin catalyst degradation. In this review, we first discuss WE mechanism, including anodic oxygen evolution (OER) cathodic hydrogen (HER). Then, provide strategies used enhance electrocatalysts. After that, deactivation mechanisms typical commercialized HER OER catalysts, Pt, Ni, RuO , IrO are summarized. Finally, influence fluctuating degradation is highlighted in situ characterization methodologies for understanding dynamic processes described.

Language: Английский

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Manageable Bubble Release Through 3D Printed Microcapillary for Highly Efficient Overall Water Splitting

Advanced Science, Journal Year: 2023, Volume and Issue: 10(13)

Published: Feb. 24, 2023

Porous metal foams (e.g., Ni/Cu/Ti) are applied as catalyst supports extensively for water splitting due to their large specific area and excellent conductivity, however, intrinsic bubble congestion is unavoidable because of the irregular three-dimensional (3D) networks, resulting in high polarization degraded electrocatalytic performances. To boost H2 O decomposition kinetics, immediate removal supply sequential gas-liquid-solid interface essential. Inspired by efficiency water/nutrient transport capillaries plants, this work designs a graphene-based capillary array with side holes support manage release via Z-axis controllable digital light processing (DLP) 3D printing technology. Like planting rice, low-cost, high-active CoNi carbonate hydroxide (CoNiCH) planted on support. A homemade cell can reach 10 mA cm-2 1.51 V, be kept at 30 60 h without noticeable degradation, surpassing most known cells. This research provides promising avenue design prepare advanced catalysts various fields, including energy applications, pollutant treatment, chemical synthesis.

Language: Английский

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Bubble Management for Electrolytic Water Splitting by Surface Engineering: A Review

Langmuir, Journal Year: 2023, Volume and Issue: 39(48), P. 16994 - 17008

Published: Nov. 21, 2023

During electrocatalytic water splitting, the management of bubbles possesses great importance to reduce overpotential and improve stability electrode. Bubble evolution is accomplished by nucleation, growth, detachment. The expanding nucleation sites, decreasing bubble size, timely detachment from electrode surface are key factors in management. Recently, engineering electrodes has emerged as a promising strategy for practical splitting due its reliability efficiency. In this review, we start with discussion behavior on during splitting. Then summarize recent progress perspective physical (electrocatalytic morphology) chemical (surface composition) considerations, focusing texture design, three-dimensional construction, wettability coating technology, functional group modification. Finally, present principles management, followed an insightful critical challenges further development.

Language: Английский

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3D printed energy devices: generation, conversion, and storage

Microsystems & Nanoengineering, Journal Year: 2024, Volume and Issue: 10(1)

Published: July 2, 2024

Abstract The energy devices for generation, conversion, and storage of electricity are widely used across diverse aspects human life various industry. Three-dimensional (3D) printing has emerged as a promising technology the fabrication due to its unique capability manufacturing complex shapes different length scales. 3D-printed can have intricate 3D structures significant performance enhancement, which otherwise impossible achieve through conventional methods. Furthermore, recent progress witnessed that with micro-lattice surpass their bulk counterparts in terms mechanical properties well electrical performances. While existing literature focuses mostly on specific individual printed devices, brief overview collectively covering wide landscape applications is lacking. This review provides concise summary advancements devices. We classify these into three functional categories; energy, offering insight within each category. current challenges future prospects associated discussed, emphasizing potential advance sustainable solutions.

Language: Английский

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Elucidating the superwetting FeOOH-modified NiMoO4 electrodes for efficient alkaline oxygen evolution reaction: An in-situ spectroscopy study

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 363, P. 124814 - 124814

Published: Nov. 12, 2024

Language: Английский

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Optimized Bubble Dynamics of 3D-Printed Electrodes for Enhanced Water Splitting

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Gas evolution plays an important role in water electrolysis, as sluggish bubble dynamics lead to blockage of active sites, reduced catalytic performance, and even detachment the catalysts. In this work, we present a strategy fabricate highly rough three-dimensional (3D)-printed Ni (3DPNi) electrodes with ordered flow channel structures, achieving exceptional performance through enhanced transport dynamics. The surfaces enhance hydrophilic aerophobic properties, suppressing coalescence accelerating structures 3DPNi serve efficient channels effectively prevent trapping, facilitating rapid Collectively, these features optimize dynamics, significantly boosting for electrolysis. Computational fluid simulations visual experiments validate improved When coated NiFe-LDH (NiFe-LDH/3DPNi), low overpotential 238 mV is required deliver 100 mA cm-2 OER. overall splitting, NiFe-LDH/3DPNi || Pt plate setup requires cell voltage 1.86 V achieve 1 A demonstrates excellent stability over h at current density, indicating strong potential practical applications.

Language: Английский

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Hierarchical CoWO4/NixFeyS microspheres bearing crystalline-amorphous interface as a multifunctional platform for outperformed water splitting and sensitive hydrazine sensing

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 664, P. 756 - 765

Published: March 9, 2024

Language: Английский

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3D-printed pyramid nickel-based electrode enabling directional bubble traffic and electrolyte flow for efficient hydrogen evolution

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 64, P. 476 - 486

Published: March 29, 2024

Language: Английский

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Trinary metal oxides of Co, Ni, and Mn as efficient overall water splitting catalyst

Ionics, Journal Year: 2024, Volume and Issue: 30(4), P. 2287 - 2298

Published: Jan. 26, 2024

Language: Английский

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Interface engineering via molecules/ions/groups for electrocatalytic water splitting

Nano Research, Journal Year: 2024, Volume and Issue: 17(9), P. 7864 - 7879

Published: July 24, 2024

Language: Английский

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