Engineering CoN4 and FeN4 Dual Sites with Adjacent Nanoclusters on Flexible Porous Carbon Fibers for Enhanced Electrocatalytic Oxygen Reduction and Evolution DOI
Zhe Lü, Zhe Wang, Zhenbei Yang

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 11, 2024

Abstract Dual‐atom catalysts (DACs) possess tunable electronic structures and efficient atom utilization, making them highly promising for catalyzing the oxygen reduction reaction/oxygen evolution reaction (ORR/OER). However, achieving high catalytic activity stability both ORR OER in DACs remains a challenge. Herein, flexible membrane of porous carbon fiber anchored with atomically scattered CoN 4 /FeN dual sites adjacent Co 2 Fe /Fe 5 nanoclusters (Co, Fe‐DACs/NCs@PCF) is synthesized. The local geometry structure sites, which act as centers ORR/OER, are finely regulated by neighboring nanoclusters. This unique imparts Co, Fe‐DACs/NCs@PCF exceptional durability toward outperforming performance single‐atom containing only or FeN well commercial Pt/C RuO catalysts. Zinc–air battery employing cathode exhibits outstanding stability, maintaining cyclability over 1500 h, + air cathode. Theoretical calculations highlight distinct synergies between (Co ) clusters (CoN optimize coupling strength Fe(Co)─OH at potential‐determining steps thus improve (OER) kinetics. study lays theoretical practical foundation rational design heterostructure featuring coexisting within fibers.

Язык: Английский

Hierarchically Ordered Pore Engineering of Carbon Supports with High‐Density Edge‐Type Single‐Atom Sites to Boost Electrochemical CO2 Reduction DOI

Chenghong Hu,

Ximeng Hong,

Miaoling Liu

и другие.

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 3, 2024

Abstract Metal sites at the edge of carbon matrix possess unique geometric and electronic structures, exhibiting higher intrinsic activity than in‐plane sites. However, creating single‐atom catalysts with high‐density remains challenging. Herein, hierarchically ordered pore engineering metal–organic framework‐based materials to construct edge‐type single‐atomic Ni for electrochemical CO 2 reduction reaction (CO RR) is reported. The created macroporous structure can expose enriched edges, further increased by hollowing walls, which overcomes low percentage in traditional microporous substrates. prepared on ultra‐thin hollow walls (Ni/H‐OMC) exhibit Faraday efficiencies above 90% an ultra‐wide potential window 600 mV a turnover frequency 3.4 × 10 4 h −1 , much superior that material dominant plane‐type Theory calculations reveal NiN edges have significantly disrupted charge distribution, forming electron‐rich centers enhanced adsorption ability * COOH, thereby boosting RR efficiency. Furthermore, Zn–CO battery using Ni/H‐OMC cathode shows unprecedentedly high power density 15.9 mW cm −2 maintains exceptionally stable charge–discharge performance over 100 h.

Язык: Английский

Процитировано

11
Challenges and Breakthroughs in Single-Atom Catalysts for Electrocatalytic Nitrate Reduction to Ammonia DOI
Yang Wang, Jin Li, Xiujing Xing

и другие.

ACS Sustainable Chemistry & Engineering, Год журнала: 2025, Номер unknown

Опубликована: Май 2, 2025

Язык: Английский

Процитировано

0
Redefining Catalytic Boundaries: Precise Design and Engineering of Nanoscale Partnerships in Nanoparticle-Regulated Single-Atom Catalysts for Multifunctional Applications DOI
Li Bo, Ling Li,

Gaoxia Zhang

и другие.

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 10239 - 10270

Опубликована: Июнь 2, 2025

Язык: Английский

Процитировано

0
Engineering CoN4 and FeN4 Dual Sites with Adjacent Nanoclusters on Flexible Porous Carbon Fibers for Enhanced Electrocatalytic Oxygen Reduction and Evolution DOI
Zhe Lü, Zhe Wang, Zhenbei Yang

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 11, 2024

Abstract Dual‐atom catalysts (DACs) possess tunable electronic structures and efficient atom utilization, making them highly promising for catalyzing the oxygen reduction reaction/oxygen evolution reaction (ORR/OER). However, achieving high catalytic activity stability both ORR OER in DACs remains a challenge. Herein, flexible membrane of porous carbon fiber anchored with atomically scattered CoN 4 /FeN dual sites adjacent Co 2 Fe /Fe 5 nanoclusters (Co, Fe‐DACs/NCs@PCF) is synthesized. The local geometry structure sites, which act as centers ORR/OER, are finely regulated by neighboring nanoclusters. This unique imparts Co, Fe‐DACs/NCs@PCF exceptional durability toward outperforming performance single‐atom containing only or FeN well commercial Pt/C RuO catalysts. Zinc–air battery employing cathode exhibits outstanding stability, maintaining cyclability over 1500 h, + air cathode. Theoretical calculations highlight distinct synergies between (Co ) clusters (CoN optimize coupling strength Fe(Co)─OH at potential‐determining steps thus improve (OER) kinetics. study lays theoretical practical foundation rational design heterostructure featuring coexisting within fibers.

Язык: Английский

Процитировано

1