Surface Modulation Insights of High-Performing Ni–Fe Nitride Fuel Cell and Electrolyzer Electrocatalysts DOI

Joesene Soto,

Qihao Li, Zixiao Shi

et al.

Chemistry of Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 18, 2024

Catalysis has been crucial in advancing and commercializing energy conversion technologies. It is essential to identify abundant, active, stable materials enable the reliable cost-efficient use of catalysts renewable technologies, such as fuel cells (FCs) electrolyzers. Suitable candidates, nonprecious metals, can be found first-row transition where bimetallics, metal oxides, nitrides readily synthesized. Recently, these have exhibited high activity toward oxygen reduction (ORR) evolution (OER) reactions alkaline media, which, turn, were related promising performance FCs However, most studies not gone beyond half-cell reactions. In this study, we explored synthesis a nitride, Ni3FeN, its application an electrocatalyst for ORR OER. We developed procedures Ni3FeN nanocrystals with different carbon loadings using one-step ammonolysis route. show that pristine structure material encompasses nitride core oxide shell thickness few nanometers. bulk electronic mainly dominated by phase. The impressive 1 M KOH favoring 4 e– pathway. slight decrease E1/2 10 mV (from 0.85 0.84 V vs RHE) during prolonged (100 K) accelerated stress test (AST). AST degradation at potentials indicates catalyst aggregates into larger nanoparticles, forming Ni@NiFeOx structure. After tests OER potentials, breaks smaller nanoparticles favors NiFeOx MEA testing hydrogen-fueled exchange membrane cell (AEMFC) yielded peak power density ca. 700 mW/cm2; among highest reported NiFe-based materials. believe work could viable, inexpensive alternatives applications.

Language: Английский

Emerging Amorphized Metastable Structures to Break Limitations of 2D Materials for More Promising Electrocatalysis DOI
Yu Gao,

Huanhuan Liang,

Hui Xu

et al.

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(8), P. 3982 - 4002

Published: July 19, 2024

Language: Английский

Citations

4
Rapid synthesis of metastable materials for electrocatalysis DOI
Qiao Chen,

Zichao Xi,

Ziyuan Xu

et al.

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

Published: Jan. 1, 2025

Metastable materials are considered promising electrocatalysts for clean energy conversions by virtue of their structural flexibility and tunable electronic properties. However, the exploration synthesis metastable via traditional equilibrium methods face challenges because requirements high precise control. In this regard, rapid method (RSM), with efficiency ultra-fast heating/cooling rates, enables production under non-equilibrium conditions. relationship between RSM properties remains largely unexplored. review, we systematically examine unique benefits various techniques mechanisms governing formation materials. Based on these insights, establish a framework, linking electrocatalytic performance Finally, outline future directions emerging field highlight importance high-throughput approaches autonomous screening optimal electrocatalysts. This review aims to provide an in-depth understanding electrocatalysts, opening up new avenues both fundamental research practical applications in electrocatalysis.

Language: Английский

Citations

0
Two‐dimensional catalysts: from model to reality DOI
Mo Zhang, Zifeng Wang, Xin Bo

et al.

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

Published: Dec. 2, 2024

Abstract Two‐dimensional (2D) materials have been utilized broadly in kinds of catalytic reactions due to their fully exposed active sites and special electronic structure. Compared with real catalysts, which are usually bulk or particle, 2D more well‐defined structures. With easily identified structure‐modulated engineering, become ideal models figure out the structure‐function relations, is helpful for precise design catalysts. In this review, unique function was summarized from model study reality catalysis application. It includes several typical materials, such as graphene, transition metal dichalcogenides, metal, (hydr)oxide materials. We introduced structural characteristics advantages researches. emphatically how serve explore structure‐activity relationship by combining theoretical calculations surface research. The opportunities challenges fundamentals applications they facing also addressed. This review provides a reference catalyst structure composition, could inspire realization two‐dimensional application industry.

Language: Английский

Citations

1
Two‐dimensional catalysts: from model to reality DOI

Mo Zhang,

Zifeng Wang, Xin Bo

et al.

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

Published: Dec. 2, 2024

Abstract Two‐dimensional (2D) materials have been utilized broadly in kinds of catalytic reactions due to their fully exposed active sites and special electronic structure. Compared with real catalysts, which are usually bulk or particle, 2D more well‐defined structures. With easily identified structure‐modulated engineering, become ideal models figure out the structure‐function relations, is helpful for precise design catalysts. In this review, unique function was summarized from model study reality catalysis application. It includes several typical materials, such as graphene, transition metal dichalcogenides, metal, (hydr)oxide materials. We introduced structural characteristics advantages researches. emphatically how serve explore structure‐activity relationship by combining theoretical calculations surface research. The opportunities challenges fundamentals applications they facing also addressed. This review provides a reference catalyst structure composition, could inspire realization two‐dimensional application industry.

Language: Английский

Citations

0
Surface Modulation Insights of High-Performing Ni–Fe Nitride Fuel Cell and Electrolyzer Electrocatalysts DOI

Joesene Soto,

Qihao Li, Zixiao Shi

et al.

Chemistry of Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 18, 2024

Catalysis has been crucial in advancing and commercializing energy conversion technologies. It is essential to identify abundant, active, stable materials enable the reliable cost-efficient use of catalysts renewable technologies, such as fuel cells (FCs) electrolyzers. Suitable candidates, nonprecious metals, can be found first-row transition where bimetallics, metal oxides, nitrides readily synthesized. Recently, these have exhibited high activity toward oxygen reduction (ORR) evolution (OER) reactions alkaline media, which, turn, were related promising performance FCs However, most studies not gone beyond half-cell reactions. In this study, we explored synthesis a nitride, Ni3FeN, its application an electrocatalyst for ORR OER. We developed procedures Ni3FeN nanocrystals with different carbon loadings using one-step ammonolysis route. show that pristine structure material encompasses nitride core oxide shell thickness few nanometers. bulk electronic mainly dominated by phase. The impressive 1 M KOH favoring 4 e– pathway. slight decrease E1/2 10 mV (from 0.85 0.84 V vs RHE) during prolonged (100 K) accelerated stress test (AST). AST degradation at potentials indicates catalyst aggregates into larger nanoparticles, forming Ni@NiFeOx structure. After tests OER potentials, breaks smaller nanoparticles favors NiFeOx MEA testing hydrogen-fueled exchange membrane cell (AEMFC) yielded peak power density ca. 700 mW/cm2; among highest reported NiFe-based materials. believe work could viable, inexpensive alternatives applications.

Language: Английский

Citations

0