Green Synthesis of Amorphous Ni–Fe Oxyhydroxide Nanosheets for Oxygen Evolution DOI
Tianjun Hu, Fuyue Wang, Qin Wang

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 24, 2024

Metal oxyhydroxides have been considered efficient electrocatalysts for the oxygen evolution reaction (OER), and structural flexibility has a significant role in boosting catalytic performance. However, control usually requires time-consuming complicated synthesis stages. Here, rapid one-step wet-chemical synthetic approach is reported to construct amorphous NiFeOOH nanosheets (a-NiFex NSs). This short-term, low-cost method can efficiently crystallinity of materials. Interestingly, one regulate defect concentration metal valence by varying Ni/Fe ratio. The high-valence species vacancy structure facilitate nucleophilic attack OH–, activate lattice oxygen, promote electrocatalytic optimized a-NiFe0.86 NS exhibits superior performance with low overpotential 309 mV achieve 100 mA cm–2 high stability. strategy provides facile universal fabricating NiFe-based as highly OER electrocatalysts.

Language: Английский

Construction of 2D CoFe-MOF derived from LDH electrocatalyst for efficient oxygen and urea evolution DOI

Aojie Yuan,

Jianhao Du,

Yang Zheng

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 684, P. 243 - 250

Published: Jan. 15, 2025

Language: Английский

Citations

5
Iron and vanadium in perovskite hydroxide enabling the relay catalysis for oxygen evolution DOI
Qiming Sun,

W. Z. Zhong,

Yuxiao Liu

et al.

Rare Metals, Journal Year: 2025, Volume and Issue: unknown

Published: March 15, 2025

Language: Английский

Citations

0
Molten Salt Assisted Ni‐Doped α‐FeOOH on Regulating Spin State for Efficient Oxygen Evolution Reactions DOI
Shan Jiang, Qing Zhao, Shuo Liu

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Abstract α‐FeOOH is a promising catalyst for oxygen evolution reaction (OER). However, owing to the high spin state (HS, t 2g 3 e g 2 ) of Fe 3+ in typical structure, bonding strength oxygen‐containing intermediates are usually too strong. In this work, successful synthesis intermediate (IS) structure on iron foam (IF) by introducing Ni atom reported. Refined structural analysis and theoretical calculations reveal that doped‐Ni enlarged d orbital splitting energy, thus converting crystal field stable HS state. The IS optimized adsorption energy reduced barrier rate‐determining step (RDS, O* OOH*). Moreover, doped generation 4+ during OER, combined with amorphous layer formed molten salt method, inhibiting dissolution Fe. as‐obtained exhibited excellent OER activity an overpotential 178 mV at 10 mA cm −2 Tafel slope 27 dec −1 , which outperforms those state‐of‐the‐art oxyhydroxides catalysts. paper, fast efficient method construction low‐cost high‐activity iron‐based provided.

Language: Английский

Citations

0
Co(OH)2 vs. CoOOH: understanding the origin of in-situ converted catalyst’s high catalytic activity towards oxygen evolution reaction DOI
Xiaoqian Ren, Mengxin Chen, Xun Cao

et al.

Rare Metals, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

Language: Английский

Citations

0
Sulfur quantum dots integration in conductive microrod array enable superior oxygen evolution performance DOI

Chuqiao Wu,

Shilin Bo,

Zhijie Luo

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 694, P. 137714 - 137714

Published: April 26, 2025

Language: Английский

Citations

0
Green Synthesis of Amorphous Ni–Fe Oxyhydroxide Nanosheets for Oxygen Evolution DOI
Tianjun Hu, Fuyue Wang, Qin Wang

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 24, 2024

Metal oxyhydroxides have been considered efficient electrocatalysts for the oxygen evolution reaction (OER), and structural flexibility has a significant role in boosting catalytic performance. However, control usually requires time-consuming complicated synthesis stages. Here, rapid one-step wet-chemical synthetic approach is reported to construct amorphous NiFeOOH nanosheets (a-NiFex NSs). This short-term, low-cost method can efficiently crystallinity of materials. Interestingly, one regulate defect concentration metal valence by varying Ni/Fe ratio. The high-valence species vacancy structure facilitate nucleophilic attack OH–, activate lattice oxygen, promote electrocatalytic optimized a-NiFe0.86 NS exhibits superior performance with low overpotential 309 mV achieve 100 mA cm–2 high stability. strategy provides facile universal fabricating NiFe-based as highly OER electrocatalysts.

Language: Английский

Citations

2