Alkaline Water Oxidation Catalyzed by 3D Self-Supported Cr-Doped Ni3N Nanosheet Arrays DOI

Hengqiang Ye,

Yang Shen, Huilong Dong

et al.

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

Published: Dec. 10, 2024

The development of highly efficient, stable, and low-cost electrocatalysts for oxygen evolution reaction (OER) is crucial enhancing the efficiency water splitting, but it still remains a huge challenge. Herein, three-dimensional (3D) self-supported Cr-doped Ni3N (Cr–Ni3N) nanosheet arrays were synthesized successfully on carbon cloth by hydrothermal method subsequent nitridation process. Cr–Ni3N displays superior alkaline OER performance with low overpotential 290 mV at current density 50 mA cm–2, small Tafel slope 56 dec–1, robust electrochemical stability, which much better than those bare commercial RuO2. calculation functional theory reveals that electron-rich Cr atoms transfer electrons to electron-deficient Ni N atoms, effectively adjust surface electron configuration catalyst, optimize H2O adsorption in 1 M KOH solution during Additionally, partially oxidized Cr6+ can electronic structure enhance stability NiOOH active sites strong withdrawing ability. This work provide pathway rationally design efficient transition metal nitride-based electrocatalysts.

Language: Английский

Self-supporting highly branched urchin-like NiCoP/NiFeP heterostructures as efficient bifunctional electrocatalyst for overall water splitting DOI

Jia-Chun Gan,

Lu Zhang, Jiu‐Ju Feng

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 687, P. 24 - 35

Published: Feb. 8, 2025

Language: Английский

Citations

13
Reconstruction of Ni-based catalyst for electrocatalytic urea oxidation reaction DOI

Xuena Gao,

Jianguo Dong, Huimin Yang

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: 1012, P. 178477 - 178477

Published: Jan. 1, 2025

Language: Английский

Citations

2
Modulation of electrospun nanomaterials for boosting electrocatalytic water splitting DOI
Yong Soo Kang, Hui Jing, Chenyue Wang

et al.

Journal of Electroanalytical Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 118941 - 118941

Published: Jan. 1, 2025

Language: Английский

Citations

0
Strategies for Modulating Ni-based Layered Double Hydroxides for Boosting Urea Electrooxidation DOI
Chang‐Hyeon Ji, Jipeng Wang,

Sheng Feng

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179306 - 179306

Published: Feb. 1, 2025

Language: Английский

Citations

0
Re-adsorption of leached Cr species during the surface reconstruction of NiFeCr layered double hydroxides enhances the oxygen evolution reaction DOI

Tongtong Luo,

Shichao Du, Haisheng Zhang

et al.

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

0
Cation-Modulated Ni/Ni3N Compound Heterojunctions as Highly Efficient Bifunctional Electrocatalysts for Water Splitting DOI

W. Z. Zhong,

Qiming Sun,

Lin Lv

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 17(1), P. 909 - 919

Published: Dec. 28, 2024

The exploration and rational design of high-performance, durable, non-precious-metal bifunctional oxygen electrocatalysts are highly desired for the large-scale application overall water splitting. Herein, an effective straightforward coupling approach was developed to fabricate high-performance OER/HER based on core–shell nanostructure comprising a Ni/Ni3N core NiFe(OH)x shell. as-prepared Ni/Ni3N@NiFe(OH)x-4 catalyst exhibited low overpotentials 57 243 mV at 10 mA cm–2 HER OER in 1.0 m KOH, respectively, superior most reported so far. Compared unmodified Ni/Ni3N, 43.3-fold increase mass activity 8.7-fold HER, as well 29.5-fold intrinsic 2.6-fold HER. When employed both cathode anode electrolyzer splitting reaction, its voltage reduced 1.58 V cm–2. This surface reconstruction method increased electrochemically active area enhanced catalytic activity. Furthermore, situ Raman spectroscopy revealed that Fe etching onset potential phase NiOOH, promoted formation, accelerated reaction kinetics, thereby enhancing electrocatalytic performance catalyst.

Language: Английский

Citations

1
Alkaline Water Oxidation Catalyzed by 3D Self-Supported Cr-Doped Ni3N Nanosheet Arrays DOI

Hengqiang Ye,

Yang Shen, Huilong Dong

et al.

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

Published: Dec. 10, 2024

The development of highly efficient, stable, and low-cost electrocatalysts for oxygen evolution reaction (OER) is crucial enhancing the efficiency water splitting, but it still remains a huge challenge. Herein, three-dimensional (3D) self-supported Cr-doped Ni3N (Cr–Ni3N) nanosheet arrays were synthesized successfully on carbon cloth by hydrothermal method subsequent nitridation process. Cr–Ni3N displays superior alkaline OER performance with low overpotential 290 mV at current density 50 mA cm–2, small Tafel slope 56 dec–1, robust electrochemical stability, which much better than those bare commercial RuO2. calculation functional theory reveals that electron-rich Cr atoms transfer electrons to electron-deficient Ni N atoms, effectively adjust surface electron configuration catalyst, optimize H2O adsorption in 1 M KOH solution during Additionally, partially oxidized Cr6+ can electronic structure enhance stability NiOOH active sites strong withdrawing ability. This work provide pathway rationally design efficient transition metal nitride-based electrocatalysts.

Language: Английский

Citations

0