Unveiling the Stacking Faults in Fe2B Induces a High-Performance Oxygen Evolution Reaction DOI Open Access
Haoyu Li, Xin Liu, Xiaoyan Liu

et al.

Catalysts, Journal Year: 2025, Volume and Issue: 15(1), P. 89 - 89

Published: Jan. 18, 2025

Fe2B is a potentially promising electrocatalyst for the oxygen evolution reaction (OER) due to its excellent electronic conductivity, which superior that of traditional oxide catalysts. However, activity still not satisfactory. In this study, meta-stable microstructure stacking faults (SFs) were incorporated into through one-step high-pressure and high-temperature (HPHT) method. Pressure suppressed atomic diffusion but formed SFs when grain grew. with exhibited remarkable OER activity, low overpotential values only 269 344 mV required reach current densities 10 100 mA cm−2, respectively; because presence SFs, was reduced 67.7% without at cm−2. Theoretical experimental investigations confirmed these regulate d-band center toward Fermi level, optimizing catalytic site activity. Furthermore, charge transfer between Fe atoms boron (B) atoms, increasing number free electrons in structure thereby conductivity. Finally, study suggests strategy construct microstructures crystals, providing new insights designing catalysts via engineering.

Language: Английский

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
Unveiling the Stacking Faults in Fe2B Induces a High-Performance Oxygen Evolution Reaction DOI Open Access
Haoyu Li, Xin Liu, Xiaoyan Liu

et al.

Catalysts, Journal Year: 2025, Volume and Issue: 15(1), P. 89 - 89

Published: Jan. 18, 2025

Fe2B is a potentially promising electrocatalyst for the oxygen evolution reaction (OER) due to its excellent electronic conductivity, which superior that of traditional oxide catalysts. However, activity still not satisfactory. In this study, meta-stable microstructure stacking faults (SFs) were incorporated into through one-step high-pressure and high-temperature (HPHT) method. Pressure suppressed atomic diffusion but formed SFs when grain grew. with exhibited remarkable OER activity, low overpotential values only 269 344 mV required reach current densities 10 100 mA cm−2, respectively; because presence SFs, was reduced 67.7% without at cm−2. Theoretical experimental investigations confirmed these regulate d-band center toward Fermi level, optimizing catalytic site activity. Furthermore, charge transfer between Fe atoms boron (B) atoms, increasing number free electrons in structure thereby conductivity. Finally, study suggests strategy construct microstructures crystals, providing new insights designing catalysts via engineering.

Language: Английский

Citations

0