NiFe Nanoparticle-Encapsulated Ultrahigh-Oxygen-Doped Carbon Layers as Bifunctional Electrocatalysts for Rechargeable Zn–Air Batteries DOI
Mengxin Liu,

Zedi Liu,

Wenhao Chen

et al.

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(28), P. 11199 - 11206

Published: July 4, 2023

There is an urgent demand for developing highly efficient bifunctional electrocatalysts with excellent stability toward the oxygen evolution and reduction reactions (OER ORR, respectively) rechargeable Zn-air batteries (ZABs). In this work, NiFe nanoparticles encapsulated within ultrahigh-oxygen-doped carbon quantum dots (C-NiFe) as are successfully obtained. The accumulation of layers formed by results in abundant pore structures a large specific surface area, which favorable improving catalytic active site exposure, ensuring high electronic conductivity simultaneously. synergistic effect enriched number centers naturally increased inherent electrocatalytic performance. Benefiting from above optimization, C-NiFe shows electrochemical activity both OER ORR processes (the overpotential only 291 mV to achieve 10 mA cm-2). Furthermore, C-FeNi catalyst air cathode displays impressive peak power density 110 mW cm-2, open-circuit voltage 1.47 V, long-term durability over 58 h. preparation electrocatalyst provides design idea construction bimetallic composites high-performance batteries.

Language: Английский

Recent progress of in situ/operando characterization techniques for electrocatalytic energy conversion reaction DOI
Zhao Li, Huimin Yang, Wenjing Cheng

et al.

Chinese Chemical Letters, Journal Year: 2023, Volume and Issue: 35(9), P. 109237 - 109237

Published: Oct. 24, 2023

Language: Английский

Citations

39
A Bi-doped RuO2 catalyst for efficient and durable acidic water oxidation DOI
Liqing Wu, Qing Liang, Jiayi Zhao

et al.

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2023, Volume and Issue: 55, P. 182 - 190

Published: Dec. 1, 2023

Language: Английский

Citations

36
Surface activation of atomically thin metal nitride by confined nanoclusters to trigger pH-universal hydrogen evolution DOI
Viet‐Hung Do,

P. Prabhu,

Yinghao Li

et al.

Joule, Journal Year: 2023, Volume and Issue: 7(9), P. 2118 - 2134

Published: July 31, 2023

Language: Английский

Citations

35
Hollow Spherical Heterostructured FeCo‐P Catalysts Derived from MOF‐74 for Efficient Overall Water Splitting DOI Creative Commons
Hualin Jiang, Zhe Zhao, Gang Kevin Li

et al.

Advanced Science, Journal Year: 2023, Volume and Issue: 11(2)

Published: Nov. 20, 2023

Abstract The design of catalysts with tunable active sites in heterogeneous interface structures is crucial for addressing challenges the water‐splitting process. Herein, a hollow spherical heterostructure FeCo‐P successfully prepared by hydrothermal and phosphorization methods. This structure, along between Co 2 P FeP, not only facilitates exposure more sites, but also increases contact area catalyst electrolyte, as well shortens distance mass/electron transfer. enhancement promotes electron transfer to facilitate water decomposition. exhibits excellent hydrogen evolution (HER) oxygen (OER) performance when reaching @ 10 mA cm −2 1 mol L −1 KOH, overpotentials 131/240 mV HER/OER. Furthermore, used both cathode anode overall splitting (OWS), it requires low voltages 1.49, 1.55, 1.57 V achieve CDs 10, 100, 300 , respectively. Density functional theory calculations indicate that constructing FeP good lattice matching can redistribution, thereby enhancing electrocatalytic OWS. work opens up new possibilities rational efficient electrolysis derived from MOFs.

Language: Английский

Citations

31
NiFe Nanoparticle-Encapsulated Ultrahigh-Oxygen-Doped Carbon Layers as Bifunctional Electrocatalysts for Rechargeable Zn–Air Batteries DOI
Mengxin Liu,

Zedi Liu,

Wenhao Chen

et al.

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(28), P. 11199 - 11206

Published: July 4, 2023

There is an urgent demand for developing highly efficient bifunctional electrocatalysts with excellent stability toward the oxygen evolution and reduction reactions (OER ORR, respectively) rechargeable Zn-air batteries (ZABs). In this work, NiFe nanoparticles encapsulated within ultrahigh-oxygen-doped carbon quantum dots (C-NiFe) as are successfully obtained. The accumulation of layers formed by results in abundant pore structures a large specific surface area, which favorable improving catalytic active site exposure, ensuring high electronic conductivity simultaneously. synergistic effect enriched number centers naturally increased inherent electrocatalytic performance. Benefiting from above optimization, C-NiFe shows electrochemical activity both OER ORR processes (the overpotential only 291 mV to achieve 10 mA cm-2). Furthermore, C-FeNi catalyst air cathode displays impressive peak power density 110 mW cm-2, open-circuit voltage 1.47 V, long-term durability over 58 h. preparation electrocatalyst provides design idea construction bimetallic composites high-performance batteries.

Language: Английский

Citations

26