Synthesis of Pt Carbon Aerogel Electrocatalysts with Multiscale Porosity Derived from Cellulose and Chitosan Biopolymer Aerogels via Supercritical Deposition for Hydrogen Evolution Reaction DOI Creative Commons
Ala Abdulalem Abdo Moqbel Alsuhile,

Philip Sidney Pein,

Şansim Bengisu Barım

et al.

Advanced Energy and Sustainability Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 2, 2025

The aim of this study is to investigate the activity and stability carbon aerogel‐supported platinum electrocatalysts in hydrogen evolution reaction, compared current solutions based on black. Self‐synthesized aerogels (pyrolyzed cellulose, chitosan‐based aerogels) with multiscale porosity high overall specific surface area (up ≈2500 m 2 g −1 ), as well Vulcan XC‐72R supports were loaded via supercritical deposition (SCD) nanoparticles (mean particle diameter ≈1.3–2.0 nm, 2.8–3.8 wt% Pt loading). Overpotentials ranged from 46.5 50.0 mV at 10 mA cm −2 , whereas self‐synthesized had similar overpotentials a commercial catalyst ≈8–10 times higher loading. In addition, Pt‐carbon aerogel durability Pt‐Vulcan, most probably due micro‐ mesoporosity aerogels, which promotes nanoparticle stability. density 40 for Pt‐Vulcan decreased by 80% after 20 h, an insignificant drop was observed aerogels. These results show that applied combination materials (biopolymer‐based loading method are promising approach synthesizing stable reduced content green production.

Language: Английский

Regulating Hydrogen/Oxygen Species Adsorption via Built‐in Electric Field ‐Driven Electron Transfer Behavior at the Heterointerface for Efficient Water Splitting DOI
Wenjie Zhang, Lei Yang, Zhi Li

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(16)

Published: Feb. 29, 2024

Abstract Alkaline water electrolysis (AWE) plays a crucial role in the realization of hydrogen economy. The design and development efficient stable bifunctional catalysts for both evolution reaction (HER) oxygen (OER) are pivotal to achieving high‐efficiency AWE. Herein, WC 1‐x /Mo 2 C nanoparticle‐embedded carbon nanofiber (WC C@CNF) with abundant interfaces is successfully designed synthesized. Benefiting from electron transfer behavior Mo , electrocatalysts C@CNF exhibit superior HER OER performance. Furthermore, when employed as anode cathode membrane electrode assembly devices, catalyst exhibits enhanced catalytic activity remarkable stability 100 hours at high current density 200 mA cm −2 towards overall splitting. experimental characterizations theoretical simulation reveal that modulation d‐band center C@CNF, achieved through asymmetric charge distribution resulting built‐in electric field induced by work function, enables optimization adsorption strength hydrogen/oxygen intermediates, thereby promoting kinetics This provides promising strategies designing highly active energy conversion fields.

Language: Английский

Citations

74
Rational design of local microenvironment for electrocatalytic water splitting DOI
Xiang Li,

Wangchuan Zhu,

Yanqun Zhang

et al.

Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(14), P. 4080 - 4106

Published: Jan. 1, 2024

This summary describes the effects of wettability, local pH, interfacial water structure, and electrolyte composition on interface reactant compositions, key intermediate adsorption, reaction kinetics.

Language: Английский

Citations

18
Advances in Oxygen Evolution Reaction Electrocatalysts via Direct Oxygen–Oxygen Radical Coupling Pathway DOI Creative Commons
Chengli Rong, Xinyi Huang, Hamidreza Arandiyan

et al.

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

Published: Jan. 15, 2025

Abstract Oxygen evolution reaction (OER) is a cornerstone of various electrochemical energy conversion and storage systems, including water splitting, CO 2 /N reduction, reversible fuel cells, rechargeable metal‐air batteries. OER typically proceeds through three primary mechanisms: adsorbate mechanism (AEM), lattice oxygen oxidation (LOM), oxide path (OPM). Unlike AEM LOM, the OPM via direct oxygen–oxygen radical coupling that can bypass linear scaling relationships intermediates in avoid catalyst structural collapse thereby enabling enhanced catalytic activity stability. Despite its unique advantage, electrocatalysts drive remain nascent are increasingly recognized as critical. This review discusses recent advances OPM‐based electrocatalysts. It starts by analyzing mechanisms guide design Then, several types novel materials, atomic ensembles, metal oxides, perovskite molecular complexes, highlighted. Afterward, operando characterization techniques used to monitor dynamic active sites examined. The concludes discussing research directions advance toward practical applications.

Language: Английский

Citations

8
Pulsed Laser-patterned high-entropy single-atomic sites and alloy coordinated graphene oxide for pH-universal water electrolysis DOI

Yeryeong Lee,

Jayaraman Theerthagiri, Wanwisa Limphirat

et al.

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

We introduce high-entropy single-atom catalysts (HESACs) from FeRuPtNiCoPd HEA on GO via pulsed laser irradiation in liquids. Synergistic interactions and rapid Fe 2+ photoreduction enhance active sites, achieving superior overall water splitting.

Language: Английский

Citations

3
Exploring the properties, types, and performance of atomic site catalysts in electrochemical hydrogen evolution reactions DOI Creative Commons
M. Nur Hossain, Lei Zhang, Roberto Neagu

et al.

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This review investigates atomic site catalysts (ASCs) for electrochemical hydrogen evolution reaction (HER), discussing their properties, types, performance, significance, activity, selectivity, stability, challenges, and future research directions.

Language: Английский

Citations

2
Insights into the pH effect on hydrogen electrocatalysis DOI
Wen‐Gang Cui,

Fan Gao,

Guoquan Na

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This review systematically provides various insights into the pH effect on hydrogen electrocatalysis, and thus providing a reference for future development of electrocatalysis based these insights.

Language: Английский

Citations

16
Recent Advanced Developments and Prospects of Surface Functionalized MXenes-Based Hybrid Composites toward Electrochemical Water Splitting Applications DOI
Rakesh Kulkarni, Lakshmi Prasanna Lingamdinne, Janardhan Reddy Koduru

et al.

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(7), P. 2660 - 2686

Published: May 31, 2024

The rapid growth of the global population and industry has increased warming energy consumption. Clean, sustainable, renewable sources must be employed if this critical problem is to resolved. Hydrogen (H2) become one most promising fuel within range alternatives. A noteworthy method creating hydrogen by electrochemically splitting water into H2 O2. As a result, need for inexpensive, accessible catalysts with remarkable catalytic performance producing environmentally friendly crucial. newly emerging class 2-D layered MXenes, which consists nitrides, transition metal carbides (TMC), carbonitrides, an impressive competitor in race. MXenes offer excellent electrochemical properties, hydrophilicity, reactivity, making them suitable water-splitting applications. However, systematic reviews on strategies mechanical chemistry electrocatalytic redox reactions productions are rare. This comprehensive review analysis addresses many boosting MXene efficiency during oxygen evolution (OER) (HER). These approaches include heteroatom doping, alloying, quantum dot plasma surface modification. Furthermore, study highlights efforts prospective paths increasing economic viability as electrocatalysts green generation. opens new avenues high-performance applications, more sustainable future.

Language: Английский

Citations

11
Design of RuOx Electrocatalysts Containing Metallic Ru on the Surface to Accelerate the Alkaline Hydrogen Evolution Reaction DOI

Yakang Li,

Jiaxin Guo,

Ruguang Wang

et al.

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

Published: Jan. 27, 2025

The development of water splitting technology in alkaline medium requires the exploration electrocatalysts superior to Pt/C boost hydrogen evolution reaction (HER). Ruthenium oxides with strong dissociation ability are promising candidates; however, lack combination sites immensely limits their performance. Herein, we reported a unique RuOx catalyst metallic Ru on its surface through simple cation exchange method. We demonstrated that formation greatly enhances interaction between and adsorbed (*H), resulting extremely high HER activity media. Moreover, proposed potential zero charge (Epzc) as descriptor ruthenium-base catalysts for first time revealed existence optimizes Epzc toward region. As result, designed achieves an overpotential only 18 mV at current density 10 mA cm–2. Furthermore, 1.80 V reach 800 cm–2 anion membrane electrolyzer, outperforming benchmark Pt/C.

Language: Английский

Citations

1
Highly efficient electrochemical hydrogenation and dehydrogenation of quinoline catalyzed by a bifunctional RuNi electrode DOI
Zhenye Zhang, Shenghan Zhang, Shijie Wang

et al.

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 114, P. 81 - 88

Published: March 1, 2025

Language: Английский

Citations

1
Modulation of Hydrogen Desorption Capability of Ruthenium Nanoparticles via Electronic Metal‐Support Interactions for Enhanced Hydrogen Production in Alkaline Seawater DOI Open Access
Junwei Sun, Zhichao Wang, Yue Wang

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

The development of efficient and stable electrocatalysts for the hydrogen evolution reaction (HER) is essential realization effective production via seawater electrolysis. Herein, study has developed a simple method that combines electrospinning with subsequent thermal shock technology to effectively disperse ruthenium nanoparticles onto highly conductive titanium carbide nanofibers (Ru@TiC). electronic metal-support interactions (EMSI) resulted from charge redistribution at interface between Ru TiC support can optimize desorption kinetics sites induce spillover phenomenon, thereby improving evolution. As result, Ru@TiC catalyst exhibits outstanding HER activity, requiring low overpotentials only 65 mV in alkaline current density 100 mA cm-2. Meanwhile, demonstrates excellent stability, maintaining consistent operation 500 cm-2 least 250 hours. Additionally, an anion exchange membrane electrolyzer incorporating operated continuously over hours 200 seawater. This highlights significant potential robust supports fabrication enduring enhance complex environments.

Language: Английский

Citations

1