High‐Entropy Alloy Nanoflower Array Electrodes with Optimizable Reaction Pathways for Low‐Voltage Hydrogen Production at Industrial‐Grade Current Density DOI
Shaobo Li, Yuying Hou,

Guang Feng

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Abstract Developing sufficiently effective non‐precious metal catalysts for large‐current‐density hydrogen production is highly significant but challenging, especially in low‐voltage systems. Here, we innovatively report high‐entropy alloy nanoflower array (HEANFA) electrodes with optimizable reaction pathways hydrazine oxidation‐assisted at industrial‐grade current densities. Atomic‐resolution structural analyses confirm the single‐phase solid‐solution structure of HEANFA. The HEANFA exhibit top‐level electrocatalytic performance both alkaline evolution (HER) and oxidation (HzOR). Furthermore, splitting (OHzS) system assembled as anode cathode exhibits a record‐breaking production. It achieves ultralow working voltages 0.003, 0.081, 0.260, 0.376, 0.646 V densities 10, 100, 500, 1 000, 2 000 mA cm −2 , respectively, remarkable stability 300 h, significantly outperforming those previously reported OHzS systems other chemicals‐assisted Theoretical calculations reveal that extraordinary attributed to its abundant high‐activity sites HER HzOR. In particular, enables intelligent migration key intermediates during HzOR, thereby optimizing creating sites, ultimately endowing OHzS.

Language: Английский

MOF‐derived Carbon‐Based Materials for Energy‐Related Applications DOI Open Access
Lulu Chai, Rui Li, Yanzhi Sun

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract New carbon‐based materials (CMs) are recommended as attractively active due to their diverse nanostructures and unique electron transport pathways, demonstrating great potential for highly efficient energy storage applications, electrocatalysis, beyond. Among these newly reported CMs, metal–organic framework (MOF)‐derived CMs have achieved impressive development momentum based on high specific surface areas, tunable porosity, flexible structural‐functional integration. However, obstacles regarding the integrity of porous structures, complexity preparation processes, precise control components hinder regulation interface engineering in CMs. In this context, review systematically summarizes latest advances tailored types, processing strategies, energy‐related applications MOF‐derived focuses structure‐activity relationship metal‐free carbon, metal‐doped metallide‐doped carbon. Particularly, intrinsic correlation evolutionary behavior between synergistic interaction micro/nanostructures species with electrochemical performances emphasized. Finally, insights perspectives relevant research presented, future prospects challenges discussed, providing valuable guidance boost high‐performance electrodes a broader range application fields.

Language: Английский

Citations

9
Carbon supported PtCo nanoparticles in-situ derived from ZIF-67 boosting methanol assisted water electrolysis DOI

Yanxi Qin,

Guoqiang Jin,

Yan Qiao

et al.

Carbon, Journal Year: 2025, Volume and Issue: unknown, P. 120128 - 120128

Published: Feb. 1, 2025

Language: Английский

Citations

0
Integrated Electrochemical Biomass Oxidation and CO2 Reduction over Ultra‐wide Potential Window DOI Open Access
Chenbao Lu,

Sen Yang,

Pengfei Shi

et al.

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Electrochemical reduction of carbon dioxide (CO2) coupled with biomass oxidation using renewable electricity is considered as a promising strategy for management. However, achieving both high selectivity and large current density over wide potential window remains significant challenge, hindering practical applications. In this study, Ni/Fe dual metal-atom catalyst developed CO2 reduction, nearly 100 % CO across an ultra-wide 1.6 V, surpassing state-of-the-art catalysts. Remarkably, maintained above 98 even after hours continuous operation at industrial 200 mA cm-2, demonstrating excellent long-term stability. When integrated into solar electricity-driven 5-hydroxymethylfurfural system, Faradaic efficiency 90 2,5-furandicarboxylic acid yield are simultaneously obtained. Theoretical calculations reveal that the rate-limiting step reaction varies applied potential, synergistic interaction between Ni Fe atoms effectively lowers limiting energy barrier. This work offers valuable insights strategic design synthesis catalysts activity window, providing versatile platform coupling diverse anodic reactions sources.

Language: Английский

Citations

0
Integrated Electrochemical Biomass Oxidation and CO2 Reduction over Ultra‐wide Potential Window DOI Open Access
Chenbao Lu,

Sen Yang,

Pengfei Shi

et al.

Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Abstract Electrochemical reduction of carbon dioxide (CO 2 ) coupled with biomass oxidation using renewable electricity is considered as a promising strategy for management. However, achieving both high selectivity and large current density over wide potential window remains significant challenge, hindering practical applications. In this study, Ni/Fe dual metal‐atom catalyst developed CO reduction, nearly 100 % across an ultra‐wide 1.6 V, surpassing state‐of‐the‐art catalysts. Remarkably, maintained above 98 even after hours continuous operation at industrial 200 mA cm −2 , demonstrating excellent long‐term stability. When integrated into solar electricity‐driven 5‐hydroxymethylfurfural system, Faradaic efficiency 90 2,5‐furandicarboxylic acid yield are simultaneously obtained. Theoretical calculations reveal that the rate‐limiting step reaction varies applied potential, synergistic interaction between Ni Fe atoms effectively lowers limiting energy barrier. This work offers valuable insights strategic design synthesis catalysts activity window, providing versatile platform coupling diverse anodic reactions sources.

Language: Английский

Citations

0
Catalyst and gas diffusion electrode design toward C–N coupling for urea electrosynthesis DOI Creative Commons
Jiping Sun, Bichao Wu, Guangchao Li

et al.

eScience, Journal Year: 2025, Volume and Issue: unknown, P. 100425 - 100425

Published: April 1, 2025

Language: Английский

Citations

0
High‐Performance Electrocatalysts of Potassium Lactate Oxidation for Hydrogen and Solid Potassium Acetate Production DOI Creative Commons
Jun Hu, Xin Gao, Shanqing Li

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Abstract With the increasing use of polylactic acid (PLA), more attention is turning to its post‐treatment. Current methods such as natural decomposition, composting, and incineration are limited by significant carbon dioxide emissions resource waste. Here, an efficient electrocatalytic conversion approach presented transform PLA waste into high‐value chemicals, particularly potassium acetate (AA‐K). By combining experimental theoretical calculation, a high‐performance catalyst Ni(Co)OOH developed, which exhibits current density 403 mA cm⁻ 2 at 1.40 V (vs RHE) with 96% Faraday efficiency for AA‐K in electrooxidation lactate (LA‐K, product degradation KOH). Through situ spectroscopy techniques functional theory calculations, structural regulation catalyst, reaction pathways elucidated. Further experiments demonstrate superior catalytic performance industrial‐scale tandem system. In h electrolysis, 320 g produces 232 L H₂, yielding 1200 97% purity after neutralization drying. The system demonstrates high (approaching 97%) diverse real forms, including powder, cups, fibers, cloth. This research provides scalable sustainable upcycling.

Language: Английский

Citations

0
High‐Entropy Alloy Nanoflower Array Electrodes with Optimizable Reaction Pathways for Low‐Voltage Hydrogen Production at Industrial‐Grade Current Density DOI
Shaobo Li, Yuying Hou,

Guang Feng

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Abstract Developing sufficiently effective non‐precious metal catalysts for large‐current‐density hydrogen production is highly significant but challenging, especially in low‐voltage systems. Here, we innovatively report high‐entropy alloy nanoflower array (HEANFA) electrodes with optimizable reaction pathways hydrazine oxidation‐assisted at industrial‐grade current densities. Atomic‐resolution structural analyses confirm the single‐phase solid‐solution structure of HEANFA. The HEANFA exhibit top‐level electrocatalytic performance both alkaline evolution (HER) and oxidation (HzOR). Furthermore, splitting (OHzS) system assembled as anode cathode exhibits a record‐breaking production. It achieves ultralow working voltages 0.003, 0.081, 0.260, 0.376, 0.646 V densities 10, 100, 500, 1 000, 2 000 mA cm −2 , respectively, remarkable stability 300 h, significantly outperforming those previously reported OHzS systems other chemicals‐assisted Theoretical calculations reveal that extraordinary attributed to its abundant high‐activity sites HER HzOR. In particular, enables intelligent migration key intermediates during HzOR, thereby optimizing creating sites, ultimately endowing OHzS.

Language: Английский

Citations

2