Exploration of metal‐free 2D electrocatalysts toward the oxygen electroreduction DOI Creative Commons
Joyjit Kundu, Taehyun Kwon, Kwangyeol Lee

et al.

Exploration, Journal Year: 2024, Volume and Issue: 4(4)

Published: Jan. 17, 2024

Abstract The advancement of economical and readily available electrocatalysts for the oxygen reduction reaction (ORR) holds paramount importance in fuel cells metal‐air batteries. Recently, 2D non‐metallic materials have obtained substantial attention as viable alternatives ORR catalysts due to their manifold advantages, encompassing low cost, ample availability, surface‐to‐volume ratio, high conductivity, exceptional durability, competitive activity. augmented performances observed metal‐free typically arise from heteroatom doping, defects, or formation heterostructures. Here, authors delve into realm ORR, pivoting around materials. Initially, merits are explored mechanism is dissected. Subsequently, a comprehensive survey diverse presented, tracing evolutionary journey fundamental concepts pragmatic applications context ORR. Substantial given on exploration various strategies enhancing assessing impact inherent material performance, including electronic properties. Finally, challenges future prospects that lie ahead underscored, they aspire serve efficient electrocatalysts.

Language: Английский

Defect engineering in transition‐metal (Fe, Co, and Ni)‐based electrocatalysts for water splitting DOI Creative Commons
Kaili Wu, Chaojie Lyu, Jiarun Cheng

et al.

Carbon Energy, Journal Year: 2024, Volume and Issue: 6(6)

Published: Feb. 23, 2024

Abstract Electrocatalytic water splitting seems to be an efficient strategy deal with increasingly serious environmental problems and energy crises but still suffers from the lack of stable electrocatalysts. Designing practical electrocatalysts by introducing defect engineering, such as hybrid structure, surface vacancies, functional modification, structural distortions, is proven a dependable solution for fabricating high catalytic activities, robust stability, good practicability. This review overview some relevant reports about effects engineering on electrocatalytic performance In detail, types defects, preparation characterization methods, performances are presented, emphasizing introduced defects electronic structures optimization intermediates' adsorption throughout review. Finally, existing challenges personal perspectives possible strategies enhancing proposed. An in‐depth understanding will light way design high‐efficiency other applications.

Language: Английский

Citations

33
Synergetic catalytic effects by strong metal−support interaction for efficient electrocatalysis DOI Creative Commons
Xue Teng,

Si Di,

Lisong Chen

et al.

eScience, Journal Year: 2024, Volume and Issue: 4(6), P. 100272 - 100272

Published: April 26, 2024

Strong metal−support interaction (SMSI), namely the strong electronic and structural between metal nanoparticles supports, one of most typical synergetic catalytic effects in composite catalysts, has been found critically important design catalyst for thermocatalysis past. Recently, however, great progress SMSI-based made electrocatalysis, such as electrocatalyst electrocatalytic mechanism investigations. To better understand nature effect assisting further development electrocatalysts, a comprehensive in-depth overview highlighting discussing recent advances SMSI electrocatalysis is necessary highly desirable but still absent. Herein, this review firstly presents various strategies designing constructing catalysts featuring SMSI. Further from perspectives characterization techniques towards electron structure, local interfacial morphological features active sites have summarized detail. Importantly, single- bi-functional electrocatalysts effects, key roles during reactions are emphasized. Finally, challenges prospects discussed out-looked to highlight remaining issues future electrocatalysts.

Language: Английский

Citations

28
Recent advances in layered double hydroxides (LDH)-based materials: Fabrications, modification strategies, characterization, promising environmental catalytic applications, and prospective aspects DOI Creative Commons
Amal A. Altalhi, Eslam A. Mohamed, Nabel A. Negm

et al.

Energy Advances, Journal Year: 2024, Volume and Issue: 3(9), P. 2136 - 2151

Published: Jan. 1, 2024

Layered double hydroxides (LDHs) are clay networks with brucite (Mg(OH 2 )) layers that coupled anions between the produced layers.

Language: Английский

Citations

25
Exploring the properties, types, and performance of atomic site catalysts in electrochemical hydrogen evolution reactions DOI Creative Commons
M. Nur Hossain, Lei Zhang, Roberto Neagu

et al.

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This review investigates atomic site catalysts (ASCs) for electrochemical hydrogen evolution reaction (HER), discussing their properties, types, performance, significance, activity, selectivity, stability, challenges, and future research directions.

Language: Английский

Citations

2
Atomic‐Level Interface Engineering for Boosting Oxygen Electrocatalysis Performance of Single‐Atom Catalysts: From Metal Active Center to the First Coordination Sphere DOI Creative Commons

Qizheng An,

Shuowen Bo,

Jingjing Jiang

et al.

Advanced Science, Journal Year: 2022, Volume and Issue: 10(4)

Published: Nov. 23, 2022

Oxygen reduction reaction (ORR) and oxygen evolution (OER) are the core reactions of a series advanced modern energy conversion technologies, such as fuel cells metal-air cells. Among all kinds electrocatalysts that have been reported, single-atom catalysts (SACs) offer great development potential because their nearly 100% atomic utilization, unsaturated coordination environment, tunable electronic structure. In recent years, numerous SACs with enriched active centers asymmetric successfully constructed by regulating environment structure, which has brought to new level. This paper reviews improvement atom-level interface engineering. It starts introduction techniques for characterizations SACs. Subsequently, different design strategies applied adjust metal center first sphere then enhance electrocatalysis performance systematically illustrated. Finally, future toward ORR OER is discussed prospected.

Language: Английский

Citations

50
Long-range electron synergy over Pt1-Co1/CN bimetallic single-atom catalyst in enhancing charge separation for photocatalytic hydrogen production DOI

Man Yang,

Jing Mei,

Yujing Ren

et al.

Journal of Energy Chemistry, Journal Year: 2023, Volume and Issue: 81, P. 502 - 509

Published: March 28, 2023

Language: Английский

Citations

40
A General Strategy to Remove Metal Aggregates toward Metal–Nitrogen–Carbon Catalysts with Exclusive Atomic Dispersion DOI
Jianbin Liu, Jiangwen Liao, Kang Huang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: unknown, P. 2211398 - 2211398

Published: Jan. 24, 2023

Metal- and nitrogen-doped nanocarbons (M-N-Cs) are promising alternatives to precious metals for catalyzing electrochemical energy conversion processes. However, M-N-Cs synthesized by high-temperature pyrolysis frequently suffer from compositional heterogeneity with the simultaneous presence of atomically dispersed M-Nx sites crystalline metal nanoparticles (NPs), which hinders identification active rational optimization in performance. Herein, a universal efficient strategy is reported obtain both precious- nonprecious-metal-based (M = Pt, Fe, Co, Ni, Mn, Cu, Zn) exclusive atomic dispersion making use ammonium iodide as etchant remove excessive aggregates at high temperature. Taking Pt-N-C proof-of-concept demonstration, complete removal Pt NPs enables clarification on contributions Pt-Nx moieties catalytic activity toward hydrogen evolution reaction. Combined measurements theoretical calculations identify that themselves possess negligible activity, but they can significantly boost via synergistic effect.

Language: Английский

Citations

38
Improved Electrocatalytic Activity and Stability by Single Iridium Atoms on Iron‐based Layered Double Hydroxides for Oxygen Evolution DOI
Jing Cao, Tong Mou, Bingbao Mei

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(43)

Published: Sept. 5, 2023

Full understanding to the origin of catalytic performance a supported nanocatalyst from points view both active component and support is significant for achievement high performance. Herein, based on model electrocatalyst single-iridium-atom-doped iron (Fe)-based layered double hydroxides (LDH) oxygen evolution reaction (OER), we reveal first completed such nanocatalysts. Specially, besides activity enhancement Ir sites by LDH support, stability surface Fe enhanced doped sites: DFT calculation shows that can reduce enhance nearby sites; while further finite element simulations indicate, distant could be attributed much low concentration OER reactant (hydroxyl ions, OH- ) around them induced fast consumption highly sites. These new findings about interaction between main components supports are applicable in principle other heterogeneous nanocatalysts provide

Language: Английский

Citations

38
Single Cobalt Atoms Immobilized on Palladium‐Based Nanosheets as 2D Single‐Atom Alloy for Efficient Hydrogen Evolution Reaction DOI
Shuai Yang, Zhihao Si, Guozhen Li

et al.

Small, Journal Year: 2023, Volume and Issue: 19(15)

Published: Jan. 11, 2023

Single-atom alloys (SAAs) display excellent electrocatalytic performance by overcoming the scaling relationships in alloys. However, due to lack of a unique structure engineering design, it is difficult obtain SAAs with high specific surface area expose more active sites. Herein, single Co atoms are immobilized on Pd metallene (Pdm) support Co/Pdm through design engineered morphology Pd, realizing preparation ultra-thin 2D SAA. The unsaturated coordination environments combined geometric and electronic structures realize modulation d-band center redistribution charges, generating highly states Co/Pdm. Benefiting from synergistic interaction spillover effect, electrocatalyst exhibits outstanding hydrogen evolution reaction (HER) both acid alkaline solutions, especially Tafel slope 8.2 mV dec-1 low overpotential 24.7 at 10 mA cm-2 acidic medium, which outperforms commercial Pt/C Pd/C. This work highlights successful SAA, provides new strategy for HER efficiency, activity, stability.

Language: Английский

Citations

35
Coordination Shell Dependent Activity of CuCo Diatomic Catalysts for Oxygen Reduction, Oxygen Evolution, and Hydrogen Evolution Reaction DOI
Yuqing Chen, Jianing Mao,

Hu Zhou

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(10)

Published: Nov. 30, 2023

Abstract Challenges in rational designing dual‐atom catalysts (DACs) give a strong motivation to construct coordination‐activity correlations. Here, thorough correlations of DACs based on how the changes coordination shells (CSs) Cu,Co centers influence their electrocatalytic activity oxygen reduction reaction(ORR), evolution reaction (OER), and hydrogen (HER) is constructed. First, with different CSs modifications are fabricated by using controlled “precursors‐preselection” approach. Three unique environments characterized as secondary S atoms that directly bond Cu,Co‐N 6 lower CSs, indirectly neighboring doped higher respectively. Then, experimentally theoretically, correlation resembling planet‐satellite system, where satellite coordinated (heteroatom N, S) surround Cu‐Co entity various orbitals CSs. By evaluating indicators, differences identified electronic structure performance Cu Co ORR, OER, HER. Interestingly, initial for may not always be advantageous electrocatalysis. This work offers valuable insight diverse applications.

Language: Английский

Citations

31