Customizing Bonding Affinity with Multi‐Intermediates via Interfacial Electron Capture to Boost Hydrogen Evolution in Alkaline Water Electrolysis DOI Open Access
Yang Liu,

Huibing Liu,

Ying Li

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 24, 2024

Abstract Developing efficient and earth‐abundant alkaline HER electrocatalysts is pivotal for sustainable energy, but co‐regulating its intricate multi‐step process, encompassing water dissociation, OH − desorption, hydrogen generation, still a great challenge. Herein, we tackle these obstacles by fabricating vertically integrated electrode featuring nanosheet array with prominent dual‐nitride metallic heterostructures characterized impeccable lattice matching excellent conductivity, functioning as multi‐purpose catalyst to fine‐tune the bonding affinity intermediates. Detailed structural characterization theoretical calculation elucidate that charge redistribution at heterointerface reduces O p ‐W d H s interactions vs. single nitride, thereby enhancing transfer 2 release. As anticipated, resulting WN‐NiN/CFP demonstrates gratifying low overpotential of 36.8 mV 10 mA/cm HER, while concurrently maintaining operational stability 1300 h 100 overall splitting. This work presents an effective approach meticulously optimize multiple site‐intermediate in laying foundation energy conversion.

Language: Английский

Iron‐Induced Localized Oxide Path Mechanism Enables Efficient and Stable Water Oxidation DOI

Bohan Yao,

Yu‐Ting Chen, Yueying Yan

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Abstract The sluggish reaction kinetics of the anodic oxygen evolution (OER) and inadequate catalytic performance non‐noble metal‐based electrocatalysts represent substantial barriers to development anion exchange membrane water electrolyzer (AEMWE). This study performed synthesis a three‐dimensional (3D) nanoflower‐like electrocatalyst (CFMO) via simple one‐step method. substitution Co with Fe in structure induces localized oxide path mechanism (LOPM), facilitating direct O−O radical coupling for enhanced O 2 evolution. optimized CFMO‐2 demonstrates superior OER performance, achieving an overpotential 217 mV at 10 mA cm −2 , alongside exceptional long‐term stability minimal degradation after 1000 h operation 1.0 M KOH. These properties surpass most conventional noble electrocatalysts. Furthermore, assembled AEMWE system, utilizing CFMO‐2, operates cell voltage 1.65 V deliver A . In situ characterizations reveal that, addition traditional adsorbate (AEM) isolated sites, new LOPM occurred around bimetallic sites. First‐principles calculations confirm greatly reduced energy barriers. work highlights potential improving design AEMWE.

Language: Английский

Citations

15
Scalable production of high-performance electrocatalysts for electrochemical water splitting at large current densities DOI Creative Commons
Zichen Xu, Zhong‐Shuai Wu

eScience, Journal Year: 2024, Volume and Issue: unknown, P. 100334 - 100334

Published: Nov. 1, 2024

Language: Английский

Citations

11
Trace Iron-Doped Nickel-Cobalt selenide with rich heterointerfaces for efficient overall water splitting at high current densities DOI

Shouyan Guo,

Linyi Zheng, Xusheng Wang

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 674, P. 902 - 912

Published: June 29, 2024

Language: Английский

Citations

8
An Ultra-Thin and Advanced Composite Membrane for High-Performance Alkaline Water Electrolysis DOI
Meng Nie,

Fangfang Wan,

Jiangping Song

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

1
Interfacial engineering of RuO2/CoOOH heterojunction for efficient oxygen evolution reaction DOI
Xianjun Niu,

Yin-Lei Ma,

Jun-Ya Gao

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: 1025, P. 180409 - 180409

Published: April 1, 2025

Language: Английский

Citations

1
Customizing Bonding Affinity with Multi‐Intermediates via Interfacial Electron Capture to Boost Hydrogen Evolution in Alkaline Water Electrolysis DOI Open Access
Yang Liu,

Huibing Liu,

Ying Li

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 24, 2024

Abstract Developing efficient and earth‐abundant alkaline HER electrocatalysts is pivotal for sustainable energy, but co‐regulating its intricate multi‐step process, encompassing water dissociation, OH − desorption, hydrogen generation, still a great challenge. Herein, we tackle these obstacles by fabricating vertically integrated electrode featuring nanosheet array with prominent dual‐nitride metallic heterostructures characterized impeccable lattice matching excellent conductivity, functioning as multi‐purpose catalyst to fine‐tune the bonding affinity intermediates. Detailed structural characterization theoretical calculation elucidate that charge redistribution at heterointerface reduces O p ‐W d H s interactions vs. single nitride, thereby enhancing transfer 2 release. As anticipated, resulting WN‐NiN/CFP demonstrates gratifying low overpotential of 36.8 mV 10 mA/cm HER, while concurrently maintaining operational stability 1300 h 100 overall splitting. This work presents an effective approach meticulously optimize multiple site‐intermediate in laying foundation energy conversion.

Language: Английский

Citations

5
Engineering N─TM(Co/Fe)─P Interfacial Electron Bridge in Transition Metal Phosphide/Nitride Heterostructure Nanoarray for Highly Active and Durable Hydrogen Evolution in Large‐Current Seawater Electrolysis DOI Open Access
Xinyu Yang, Wenhao Guo, Hongyan Xi

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Abstract Hydrogen production via alkaline seawater electrolysis represents a promising strategy for future sustainable energy development. In this study, FeCoP/TiN/CP(carbon paper) nanoarray electrode with exceptional hydrogen evolution reaction (HER) activity and durability at the industrial current density is successfully fabricated by engineering electronic coupling N─transition metal (TM, Co/Fe)─P interfacial bridge. Remarkably, FeCoP/TiN/CP requires only an overpotential of 129 mV (alkaline fresh water) 152 seawater) to achieve 500 mA cm −2 , stable operation demonstrated 2000 h in freshwater 340 negligible degradation. The superior HER performance stems from unique architecture phase interface N─TM(Co/Fe)─P bridge bonding, which enhances wettability, facilitates bubble release, provides resistance corrosion. Theoretical calculations demonstrate that bridging regulates structure FeCoP, promoting water adsorption dissociation, while optimizing intermediate H* free energy. Furthermore, covalent nature N‐TM(Co/Fe)‐P bridging, along strengthened Co/Fe‐P bonds, contributes stability FeCoP/TiN/CP. This study not new insights into design highly active heterostructure electrocatalysts, but also paves way practical cost‐effective electrolysis.

Language: Английский

Citations

0
Anion exchange membrane water electrolysis enhanced by reverse electron redistribution caused by La introduction DOI

Liuping Liang,

Tao Zhou, Panagiotis Tsiakaras

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125332 - 125332

Published: April 1, 2025

Language: Английский

Citations

0
Scalable Fe‐Rich Corroded Steel Wool Electrodes for Industrial Anion Exchange Membrane Water Electrolysis with a Two‐Order‐of‐Magnitude Cost Reduction DOI

Seongsik Jang,

Jin‐Hong Kim, Sung Hoon Ahn

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Abstract Alkaline‐based anion exchange membrane water electrolysis (AEMWE) plays a crucial role in sustainable hydrogen production. However, conventional electrode designs rely on expensive nickel‐based materials and complex fabrication processes, limiting their scalability. This study presents cost‐effective scalable approach that transforms ultralow‐cost steel wool into freestanding electrodes for industrial‐scale AEMWE. The fibrous structure, anchoring an activated nickel–iron layered double hydroxide catalyst, enables highly active bifunctional electrode, achieving 1 A cm⁻ 2 at 1.815 V with ultralow degradation rate of ≈0.041 mV h⁻¹ over 1800 h. Unlike electrodes, the interwoven matrix eliminates need porous transport layers forms interlocking interface membrane, significantly enhancing performance durability. Under industrial conditions, prototype AEMWE single stack (≈16 cm ) delivers 16 1.8 nearly 30 2.0 V, maintaining stable operation 400 h under dynamic conditions. iron‐rich system, based one‐pot corrosion process, upcycling mass‐produced m scale cost 4.59 USD m⁻ , 200 times cheaper than electrodes. These findings establish new paradigm cost‐efficient durable design applications.

Language: Английский

Citations

0
In Situ Reconfigured Heterostructure Active Sites on Transition Metal Sulfides Heterojunction for Accelerated Water Oxidation DOI
Li Huang, Rui Gao, Yunsheng Qiu

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Transition metal sulfides (TMSs) are promising noble-metal-free electrocatalysts for electrochemical water splitting due to their distinctive physical and chemical properties, but they usually undergo complicated structure reconfiguration during the oxygen evolution reaction (OER). Precisely controlling in situ of TMSs generation high-activity real active sites still remains a great challenge. Herein, we propose reconfigure heterostructure active-sites on transition via heterojunction engineering achieve high OER performances (Ni,Fe)S2/MoS2 catalysts. The continuous leaching Mo S electrooxidation induces reconfiguration, strong electronic interaction (Ni,Fe)S2 MoS2 generates special Ni(OH)2/NiOOH/FeOOH an asynchronous Fe Ni. catalyst therefore exhibits excellent activity (a small overpotential 228 mV at 100 mA cm-2) low voltage alkaline electrolyzer (1.44 V 10 cm-2), outperforming homogeneous Mo-free NiFe sulfide catalysts with conventional Ni-doped FeOOH. This work sheds light precise structures design under reconstruction broadens horizon chemistry low-cost efficient electrocatalysts.

Language: Английский

Citations

0