Balancing the Binding of Intermediates Enhances Alkaline Hydrogen Oxidation on D-Band Center Modulated Pd Sites DOI
Yang Zhou, Tao Chen,

Jiawei Ke

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(21), P. 10092 - 10098

Published: May 15, 2024

Exploring efficient alkaline hydrogen oxidation reaction (HOR) electrocatalysts is of great concern for constructing anion exchange membrane fuel cells (AEMFCs). Herein, d-band center modulated PdCo alloys with ultralow Pd content anchored onto the defective carbon support (abbreviated as PdCo/NC hereafter) are proposed highly HOR catalyst. The as-prepared catalyst exhibits exceptional performance compared to Pt/C catalyst, achieving thermodynamically spontaneous and kinetically preferential reactions. Specifically, resultant demonstrates a marked enhancement in performance, highest mass specific activities 1919.6 mA mgPd–1 1.9 cm–2, 51.1 4.2 times higher than those benchmark Pt/C, along an excellent stability chronoamperometry test. In analysis situ Raman spectra, it was discovered that tetrahedrally coordinated H-bonded water molecules were formed during process. This indicates promotion interfacial molecule formation facilitated by defect engineering turning alloy. essential knowledge obtained this study could open up new direction modifying electronic structure cost-effective catalysts through engineering.

Language: Английский

Hydrogen oxidation electrocatalysts for anion-exchange membrane fuel cells: activity descriptors, stability regulation, and perspectives DOI
Jin‐Tao Ren, Lei Chen, Haoyu Wang

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(12), P. 3960 - 4009

Published: Jan. 1, 2024

The general principles in terms of reactivity and stability to design efficient electrocatalysts for the alkaline hydrogen oxidation reaction are reviewed. performance catalysts anion-exchange membrane fuel cells is further discussed.

Language: Английский

Citations

29
Metal Sulfide‐Based Nanoarchitectures for Energetic and Environmental Applications DOI Creative Commons
Sili Liu, Yuanli Li,

Xiaoyan Zhong

et al.

Small Structures, Journal Year: 2024, Volume and Issue: 5(6)

Published: May 8, 2024

Despite their numerous excellent properties, metal sulfides are not particularly efficient at converting energy and purifying the environment, which limits further applications. Fortunately, conversion environmental purification efficiencies of these materials have experienced notable advancements in recent years, accompanied by an improved understanding underlying mechanisms. Herein, progress experimental researches years on engineering single component controlling morphology, construction heterojunctions, incorporating elements is reviewed. Methods to design prepare sulfide‐based composites building binary or ternary heterojunctions sulfide/semiconductor/conductor also discussed detail. These used systems, where they act as photocatalytic only split water, reduce carbon dioxide nitrogen, but degrade pollutants (organic inorganic) water gas. Finally, it concluded summarizing research frontiers sulfide nanomaterials applications, well proposing potential challenges future directions. This work may contribute a better nanocomposites provide clues for fabrication more nanostructures clean production remediation.

Language: Английский

Citations

7
Intrinsic Activity: A Critical Challenge of Alkaline Hydrogen Oxidation Reaction DOI Open Access
Xiaoyun Song,

Qimei Yang,

Kaisheng Zou

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 16, 2024

Abstract Anion exchange membrane fuel cells (AEMFCs) are advantageous for reducing or even eliminating the dependency on platinum resources, as alkaline environment allows use of non‐precious metal catalysts oxygen reduction reaction at cathode. However, intrinsic activity hydrogen oxidation (HOR) in environments is 2 to 4 orders magnitude lower than acidic environments, which becomes major challenge AEMFCs. This review examines current developments HOR and systematically summarizes activation mechanism with a focus potential influencing factors enhancement strategies. Furthermore, it offers insights into prospects developing more efficient catalysts.

Language: Английский

Citations

4
Balancing the Binding of Intermediates Enhances Alkaline Hydrogen Oxidation on D-Band Center Modulated Pd Sites DOI
Yang Zhou, Tao Chen,

Jiawei Ke

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(21), P. 10092 - 10098

Published: May 15, 2024

Exploring efficient alkaline hydrogen oxidation reaction (HOR) electrocatalysts is of great concern for constructing anion exchange membrane fuel cells (AEMFCs). Herein, d-band center modulated PdCo alloys with ultralow Pd content anchored onto the defective carbon support (abbreviated as PdCo/NC hereafter) are proposed highly HOR catalyst. The as-prepared catalyst exhibits exceptional performance compared to Pt/C catalyst, achieving thermodynamically spontaneous and kinetically preferential reactions. Specifically, resultant demonstrates a marked enhancement in performance, highest mass specific activities 1919.6 mA mgPd–1 1.9 cm–2, 51.1 4.2 times higher than those benchmark Pt/C, along an excellent stability chronoamperometry test. In analysis situ Raman spectra, it was discovered that tetrahedrally coordinated H-bonded water molecules were formed during process. This indicates promotion interfacial molecule formation facilitated by defect engineering turning alloy. essential knowledge obtained this study could open up new direction modifying electronic structure cost-effective catalysts through engineering.

Language: Английский

Citations

3