Electronic Modulation of Interfacial Engineering Co2P@FeP-FeP4 Nanoframe Heterostructures Boosting Overall Water Splitting DOI
Xuan Wu, T. Dhanasekaran, Wei Han

et al.

ACS Applied Engineering Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 24, 2024

The development of bifunctional electrocatalysts using renewable electricity for sustainable green energy industrial production is a potential method. As result, numerous standard methodologies investigate developing that naturally alter the electronic structure and minimize kinetic barriers. This study developed promising method engineering interfacial heterostructure nanoframes (Co2P/FeP-FeP4, hereafter denoted as CFP-8) deposited on nickel foam hydrothermal low-temperature phosphorization techniques. However, improved CFP-8 electrocatalyst was exposed to abundant active sites nanocrystals remained intact. Importantly, P incorporation plays crucial role in creating vacancy defect, which contributes thermodynamic favoring electrocatalysis oxygen evolution reaction (OER) intrinsically enhances hydrogen adsorption-free reactions (HERs), due interconnected arrangement via synergistic strain-induced effect. Therefore, enclosed demonstrate good performance display low overpotential with high current densities (HER, η10 = 97 mV, η20 131 η50 186 mV; OER, 230 247 280 mV) minimal Tafel value 111 mV/dec 74 HER OER under alkaline medium, superior benchmark electrocatalysts. Also, demonstrated remarkable stability over 50 h, utilizing chronoamperometry (CA) chronopotentiometry (CP). In addition, an integrated electrolyzer CFP-8/NF electrodes (polymeric binder-free electrodes) delivered cell voltage 1.65 V density 20 mA cm–2 accelerated kinetics stability, outperforming Pt/C (cathode)||RuO2 (anode) overall water splitting (OWSRs). coexistence Co, Fe, elements may accelerate electron mass movement, improving electrocatalytic performance. paves way further research into low-cost transition metal-based phosphides applications.

Language: Английский

Regulation of Oxide Pathway Mechanism for Sustainable Acidic Water Oxidation DOI
Xuejie Cao, Hongye Qin, Jinyang Zhang

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(46), P. 32049 - 32058

Published: Nov. 12, 2024

The advancement of acid-stable oxygen evolution reaction (OER) electrocatalysts is crucial for efficient hydrogen production through proton exchange membrane (PEM) water electrolysis. Unfortunately, the activity constrained by a linear scaling relationship in adsorbed mechanism, while lattice-oxygen-mediated mechanism undermines stability. Here, we propose heterogeneous dual-site oxide pathway (OPM) that avoids these limitations direct dioxygen radical coupling. A combination Lewis acid (Cr) and Ru to form solid solution oxides (Cr

Language: Английский

Citations

25
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
Strontium Doped IrOx Triggers Direct O‐O Coupling to Boost Acid Water Oxidation Electrocatalysis DOI

Wuyong Zhang,

Caihan Zhu,

Yingjie Wen

et al.

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

Published: Oct. 10, 2024

The discovery of efficient and stable electrocatalysts for the oxygen evolution reaction (OER) in acidic conditions is crucial commercialization proton-exchange membrane water electrolyzers. In this work, we propose a Sr(OH)

Language: Английский

Citations

12
“One Stone, Two Birds”: Multi‐Element Doping Induced Crystallinity Modulation for Large Current Density Oxygen Evolution Reaction DOI Open Access
Yuhang Yuan, Yifan Yang, Guanglei Liu

et al.

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

Published: Jan. 23, 2025

Abstract Oxygen evolution reaction (OER) plays a critical role in water splitting, which can directly determine the energy consumption of hydrogen production. However, poor stability catalysts at large current density inhibits their industrial application. Therefore, development efficient with industry‐relevant activities still faces great challenges. Herein, one‐step corrosion strategy is reported for preparation multi‐element low‐crystal transition metal hydroxide (denoted as NiFeCrMnCo‐c). Density functional theory calculation indicates that doping improves conductivity catalyst and reduces barrier catalytic process. Only 259 303 mV overpotentials are required to achieve anodic densities 100 1000 mA cm −2 respectively, it work 50 300 h without apparent attenuation. Furthermore, when self‐assembled an anion exchange membrane electrolyzer, requires only 1.72 V splitting operates stably 60 °C, meet requirements The design OER simple preparation, high activity, provides new perspective practical splitting.

Language: Английский

Citations

1
Oxygen radical coupling on short-range ordered V sites for enhanced oxygen evolution reaction activity DOI
Xiaoxiao Li, Yu Yan, Yuan Yao

et al.

Applied Surface Science, Journal Year: 2025, Volume and Issue: 694, P. 162829 - 162829

Published: Feb. 28, 2025

Language: Английский

Citations

1
Advances in dual-site mechanisms for designing high-performance oxygen evolution electrocatalysts DOI Creative Commons
Zhongjian Hu, Han Wu, Xue Yong

et al.

eScience, Journal Year: 2025, Volume and Issue: unknown, P. 100403 - 100403

Published: March 1, 2025

Language: Английский

Citations

1
Engineering Lattice Distortion in Ruthenium Oxide Enables Robust Acidic Water Oxidation via Direct O–O Coupling DOI
Yin’an Zhu, Fei Wu,

Xiaozan Zhang

et al.

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

Published: April 7, 2025

Abstract Ruthenium is considered one of the most promising alternatives to iridium as an anode electrocatalyst for proton exchange membrane water electrolysis (PEMWE). However, Ru‐based electrocatalysts suffer from poor stability, primarily due structural collapse under harsh acidic conditions oxygen evolution reaction (OER). Here, a design strategy introduced that significantly enhances both stability and activity RuO 2 by switching catalytic mechanism adsorbate (AEM) oxide pathway (OPM). This achieved through lattice distortion engineering using co‐doping involving large‐radius ions (Na⁺ Hf 4+ ). The incorporation Na + into induces significant distortion, shortening partial Ru─Ru bond distance optimizing electronic structure. modification facilitates direct O–O radical coupling, confirmed in situ vibrational measurements theoretical calculations. It can drive current density 1 A cm −2 PEMWE device at 60 °C with 1.646 V operates stably 85 h 0.5 . present study highlights synergistic interaction between two adjacent Ru sites promote coupling effective enhancing OER performance

Language: Английский

Citations

1
Stabilizing Ru Single Atoms on Asymmetric La/Co3O4 Supports with Strong Metal–Support Interaction for Efficient Acidic Water Oxidation DOI
Conghui Li, Cheng‐Zong Yuan, Chenliang Zhou

et al.

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 7403 - 7413

Published: April 20, 2025

Language: Английский

Citations

1
In-situ transcribed local coordinations from CoP nanorods pre-catalyst for efficient electrocatalytic oxygen evolution DOI
Yuhao Zhang, Xiuxiu Zhang, Jing Zhang

et al.

Nano Energy, Journal Year: 2024, Volume and Issue: unknown, P. 110414 - 110414

Published: Oct. 1, 2024

Language: Английский

Citations

4
Comprehensive Insight Into Electronic Modulation of Rare‐Earth Elements for Enhancing Electrocatalytic Performance of Atomically Dispersed Materials DOI Open Access
Yanhui Cao, Xuerong Zheng, Yida Deng

et al.

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

Published: Jan. 2, 2025

Abstract Atomically dispersed materials have been a thriving research field due to their maximum atomic utilization and remarkable performance in energy conversion storage systems. Owing the large radius, strong oxophilicity, unique electronic properties, rare‐earth (RE) elements widely investigated as oxide carriers promoters atomically manipulate regulate structure of active species. Single‐atom state with an adjustable coordination environment on N‐doped carbon endows RE metals special states outstanding catalytic performances. A thorough comprehension modulation mechanism paves way for construction advanced RE‐based electrocatalysts high activity, stability, selectivity. This review provides widespread insight into roles modulating properties combined structure–performance relationship electrocatalysis processes. The characteristic physical chemical are highlighted, synthetic strategy is discussed. Finally, summary perspectives rational design development highly efficient catalysts proposed. aims provide guideline promoting effective functional materials.

Language: Английский

Citations

0