Dual‐reaction pathway engineering via anode‐driven methanol oxidation for efficient electrocatalytic ammonia production DOI
Yuzhe Zhang, Lu Chen,

Xiaoqing Yan

et al.

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

Published: April 21, 2025

Abstract Replacing the anodic oxygen evolution reaction with selective methanol oxidation to formic acid offers a promising route enhance paired electrochemical ammonia synthesis. However, inherent kinetic and thermodynamic disparities between cathodic reduction present significant challenges in achieving optimal system performance. Herein, we propose dual‐reaction strategy employing bifunctional Au/CoOOH nanocomposite catalysts, simultaneous NH 3 production (34.15 g) synthesis (69.65 after 24 h at 2.6 V cell voltage. Density functional theory (DFT) calculations further reveal that loading Co‐based catalysts its hybridization Au nanoparticles can effectively tune electronic configuration of Co‐O sites poison their strong adsorption capacity intermediate products, lowering energy barrier alter pathway. This work provides an atomic‐level design principle for coupled systems, demonstrating better efficiency, while co‐producing high‐value chemicals scalable green

Language: Английский

Advances in protective coatings for porous transport layers in proton exchange membrane water electrolyzers: Performance and durability insights DOI Creative Commons

Leila Moradizadeh,

Pramoth Varsan Madhavan, Adnan Ozden

et al.

Energy Conversion and Management, Journal Year: 2025, Volume and Issue: 332, P. 119713 - 119713

Published: March 13, 2025

Language: Английский

Citations

0
Use of Reconstructed Pore Networks for Determination of Effective Transport Parameters of Commercial Ti-Felt PTLs DOI Open Access
Haashir Altaf, Tamara Miličić, Felix Faber

et al.

Processes, Journal Year: 2025, Volume and Issue: 13(4), P. 943 - 943

Published: March 22, 2025

The efficiency of an electrolyzer is significantly influenced by mass, heat, and charge transport within its porous layer (PTL). infeasibility measuring them in-situ makes it challenging to study their influence experimentally, leading the adoption various modeling approaches. This applies pore network (PN) investigate mass properties capillary invasion behavior in three commercial titanium felt PTLs commonly used proton exchange membrane water electrolyzers (PEMWEs). One PTL has a graded structure. Reconstructed PNs were derived from microcomputed X-ray tomography (µ-CT) data, allowing for detailed analysis size distributions, absolute relative permeabilities, pressure curves, residual liquid saturations. results PN approach are compared literature correlations. permeability all between 1.1 × 10−10 m2 1.5 m2, with good agreement PNM predictions Jackson James model Tomadakis Sotirchos model, two latter involving fiber diameter as parameter. PTL, diameters varying 25 µm 40 µm, showed best However, curves exhibited significant deviations Leverett Brooks–Corey equations at low high saturations, emphasizing limitations these In addition, saturation varied strongly thicker slightly narrower distribution, demonstrated lower (19%) more homogeneous (64%), which gas fingering. suggest that higher could enhance removal, much despite greater thickness. contrast, achieves highest (~70%) while maintaining ~30%. These findings highlight impact microstructure on powerful tool study.

Language: Английский

Citations

0
A review on sulfonated organic polymer based composite membranes for PEM water electrolyzers DOI
Jamal Afzal, Haijiang Wang

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 123, P. 100 - 117

Published: April 1, 2025

Language: Английский

Citations

0
Dual‐reaction pathway engineering via anode‐driven methanol oxidation for efficient electrocatalytic ammonia production DOI
Yuzhe Zhang, Lu Chen,

Xiaoqing Yan

et al.

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

Published: April 21, 2025

Abstract Replacing the anodic oxygen evolution reaction with selective methanol oxidation to formic acid offers a promising route enhance paired electrochemical ammonia synthesis. However, inherent kinetic and thermodynamic disparities between cathodic reduction present significant challenges in achieving optimal system performance. Herein, we propose dual‐reaction strategy employing bifunctional Au/CoOOH nanocomposite catalysts, simultaneous NH 3 production (34.15 g) synthesis (69.65 after 24 h at 2.6 V cell voltage. Density functional theory (DFT) calculations further reveal that loading Co‐based catalysts its hybridization Au nanoparticles can effectively tune electronic configuration of Co‐O sites poison their strong adsorption capacity intermediate products, lowering energy barrier alter pathway. This work provides an atomic‐level design principle for coupled systems, demonstrating better efficiency, while co‐producing high‐value chemicals scalable green

Language: Английский

Citations

0