Transition metal nanomaterial-based electrocatalysts for water and CO2 electrolysis: preparation, catalytic activity, and prospects DOI Creative Commons
Govindhan Maduraiveeran

Frontiers in Energy Research, Journal Year: 2024, Volume and Issue: 12

Published: Oct. 24, 2024

The production of hydrogen (H 2 ) and multi-carbon fuels through water electrolysis (oxygen evolution reaction (OER)/hydrogen (HER)) water–CO co-electrolysis (OER/CO reduction (CO RR)), respectively, is supposed to be the emergent energy carrier. These electrochemical processes are essential chemical conversion pathways that initiate changes toward renewable energy. This review summarizes systematic design earth-abundant transition metal-based nanomaterials their electrocatalytic activities reactions such as OER, HER, CO RR. primary focus on fabricating highly effective, low-cost, advanced nanostructures for both OER/HER OER/CO RR systems. Developing synthetic strategies surface morphology-controlled nanostructured electrocatalysts, engineering electrode surface, enhancing activity, understanding relationship between intrinsic catalytic activity preparation approaches or precursor choices, exploring mechanism focused on. Furthermore, current challenges, figure-of-merit, prospects described. study may open new opportunities develop shape-controlled high-performance electrocatalysts storage reactions.

Language: Английский

Visualizing Electrochemical CO2 Conversion via the Emerging Scanning Electrochemical Microscope: Fundamentals, Applications and Perspectives DOI

Mulin Yu,

Peng‐Fei Sui,

Yu‐Feng Tang

et al.

Small Methods, Journal Year: 2024, Volume and Issue: unknown

Published: May 14, 2024

Abstract With the rapid development and maturity of electrochemical CO 2 conversion involving cathodic reduction reaction (CO RR) anodic oxygen evolution (OER), conventional ex situ characterizations gradually fall behind in detecting real‐time products distribution, tracking intermediates, monitoring structural evolution, etc. Nevertheless, advanced techniques, with intriguing merits like good reproducibility, facile operability, high sensitivity, short response time, can realize detection recording dynamic data, observe materials real time. As an emerging visual technique, scanning microscope (SECM) presents local signals on various surface through capturing micro‐current caused by reactants oxidation reduction. Importantly, SECM holds particular potentials visualizing reactive intermediates at active sites obtaining instantaneous morphology images to reveal intrinsic reactivity sites. Therefore, this review focuses fundamentals its specific applications toward RR OER, mainly including behavior observation regions materials, target onset identification real‐time, pathways clarification, kinetics exploration under steady‐state conditions, electroactive screening multi‐techniques coupling for a joint utilization. This undoubtedly provides leading guidance extend other energy‐related fields.

Language: Английский

Citations

3
Recent advances in dynamic reconstruction of electrocatalysts for carbon dioxide reduction DOI Creative Commons
Jianfang Zhang,

Shuai Xia,

Yan Wang

et al.

iScience, Journal Year: 2024, Volume and Issue: 27(6), P. 110005 - 110005

Published: May 15, 2024

SummaryElectrocatalysts undergo structural evolution under operating electrochemical CO2 reduction reaction (CO2RR) conditions. This dynamic reconstruction correlates with variations in CO2RR activity, selectivity, and stability, posing challenges catalyst design for CO2RR. Despite increased research on the behavior of electrocatalysts, a comprehensive understanding their conditions is lacking. review summarizes recent developments catalysts during process, covering fundamental principles, modulation strategies, situ/operando characterizations. It aims to enhance electrocatalyst reconstruction, offering guidelines rational electrocatalysts.Graphical abstract

Language: Английский

Citations

3
Modulating the coordination environment of cobalt porphyrins for enhanced electrochemical nitrite reduction to ammonia DOI Creative Commons

Jingwei Han,

Hai Sun,

Fengkun Tian

et al.

Carbon Energy, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 8, 2024

Abstract Electrocatalytic reduction of nitrate pollutants to produce ammonia offers an effective approach realizing the artificial nitrogen cycle and replacing energy‐intensive Haber‐Bosch process. Nitrite is important intermediate product in ammonia. Therefore, mechanism converting nitrite into warrants further investigation. Molecular cobalt catalysts are regarded as promising for reactions (NO 2 − RR). However, designing controlling coordination environment molecular crucial studying NO RR catalyst design. Herein, we develop a platform porphyrin with three microenvironments (Co‐N 3 X 1 , = N, O, S). Electrochemical experiments demonstrate that O (CoOTPP) exhibits lowest onset potential highest activity production. Under neutral, non‐buffered conditions over wide range (−1.0 −1.5 V versus AgCl/Ag), Faradaic efficiency nearly 90% was achieved reached 94.5% at −1.4 AgCl/Ag, yield 6,498 μg h −1 turnover number 22,869 AgCl/Ag. In situ characterization density functional theory calculations reveal modulating alters electron transfer mode active center charge redistribution caused by break ligand field. this results enhanced electrochemical This study provides valuable guidance adjustments enhance catalytic activity.

Language: Английский

Citations

3
A local Proton−Transport Promoter for Industrial CO2 Electroreduction to Multicarbon Products DOI
Hui Guo, Qi Huang, Di Li

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

ex and in situ Multi-scale proton transport studied using density functional theory, molecular dynamics, four-probe SECM could not only address the pH effect on thermodynamics kinetics, but also clarify mechanism for industrial-level eCO 2 RR.

Language: Английский

Citations

1
Transition metal nanomaterial-based electrocatalysts for water and CO2 electrolysis: preparation, catalytic activity, and prospects DOI Creative Commons
Govindhan Maduraiveeran

Frontiers in Energy Research, Journal Year: 2024, Volume and Issue: 12

Published: Oct. 24, 2024

The production of hydrogen (H 2 ) and multi-carbon fuels through water electrolysis (oxygen evolution reaction (OER)/hydrogen (HER)) water–CO co-electrolysis (OER/CO reduction (CO RR)), respectively, is supposed to be the emergent energy carrier. These electrochemical processes are essential chemical conversion pathways that initiate changes toward renewable energy. This review summarizes systematic design earth-abundant transition metal-based nanomaterials their electrocatalytic activities reactions such as OER, HER, CO RR. primary focus on fabricating highly effective, low-cost, advanced nanostructures for both OER/HER OER/CO RR systems. Developing synthetic strategies surface morphology-controlled nanostructured electrocatalysts, engineering electrode surface, enhancing activity, understanding relationship between intrinsic catalytic activity preparation approaches or precursor choices, exploring mechanism focused on. Furthermore, current challenges, figure-of-merit, prospects described. study may open new opportunities develop shape-controlled high-performance electrocatalysts storage reactions.

Language: Английский

Citations

0