Defect Engineering of a High‐Entropy Metallic Glass Surface for High‐Performance Overall Water Splitting at Ampere‐Level Current Densities DOI
Xinyue Zhang, Yiyuan Yang, Yujing Liu

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(38)

Published: June 7, 2023

Platinum-based electrocatalysts possess high water electrolysis activity and are essential components for hydrogen evolution reaction (HER). A major challenge, however, is how to break the cost-efficiency trade-off. Here, a novel defect engineering strategy presented construct nanoporous (FeCoNiB0.75 )97 Pt3 (atomic %) high-entropy metallic glass (HEMG) with nanocrystalline surface structure that contains large amounts of lattice distortion stacking faults achieve excellent electrocatalytic performance using only 3 at% Pt. The defect-rich HEMG achieves ultralow overpotentials at ampere-level current density 1000 mA cm-2 HER (104 mV) oxygen (301 under alkaline conditions, while retains long-term durability exceeding 200 h 100 . Moreover, it requires 81 122 mV drive densities acidic neutral respectively. Modelling results reveal fault defects help optimize atomic configuration modulate electronic interaction, architecture provides abundant active sites, thus synergistically contributing reduced energy barrier electrolysis. This approach combined design expected be widely applicable development high-performance alloy catalysts.

Language: Английский

Principles of Water Electrolysis and Recent Progress in Cobalt‐, Nickel‐, and Iron‐Based Oxides for the Oxygen Evolution Reaction DOI Creative Commons
Mingquan Yu, Eko Budiyanto, Harun Tüysüz

et al.

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 61(1)

Published: June 17, 2021

Water electrolysis that results in green hydrogen is the key process towards a circular economy. The supply of sustainable electricity and availability oxygen evolution reaction (OER) electrocatalysts are main bottlenecks for large-scale production hydrogen. A broad range OER have been explored to decrease overpotential boost kinetics this sluggish half-reaction. Co-, Ni-, Fe-based catalysts considered be potential candidates replace noble metals due their tunable 3d electron configuration spin state, versatility terms crystal electronic structures, as well abundance nature. This Review provides some basic principles water electrolysis, aspects OER, significant criteria development catalysts. It also insights on recent advances oxides brief perspective challenges electrolysis.

Language: Английский

Citations

540
Electrochemical Water Splitting: Bridging the Gaps Between Fundamental Research and Industrial Applications DOI Open Access
Hainan Sun, Xiaomin Xu, Hyunseung Kim

et al.

Energy & environment materials, Journal Year: 2022, Volume and Issue: 6(5)

Published: May 28, 2022

Electrochemical water splitting represents one of the most promising technologies to produce green hydrogen, which can help realize goal achieving carbon neutrality. While substantial efforts on a laboratory scale have been made for understanding fundamental catalysis and developing high‐performance electrocatalysts two half‐reactions involved in electrocatalysis, much less attention has paid doing relevant research larger scale. For example, few such researches done an industrial Herein, we review very recent endeavors bridge gaps between applications electrolysis. We begin by introducing fundamentals electrochemical then present comparisons testing protocol, figure merit, catalyst interest, manufacturing cost industry‐based water‐electrolysis research. Special is tracking surface reconstruction process identifying real catalytic species under different conditions, highlight significant distinctions corresponding mechanisms. Advances designs industry‐relevant electrolysis are also summarized, reveal progress moving practical forward accelerating synergies material science engineering. Perspectives challenges electrocatalyst design strategies proposed finally further lab‐scale large‐scale electrocatalysis applications.

Language: Английский

Citations

320
Surface Reconstruction of Water Splitting Electrocatalysts DOI

Ye Zeng,

Mengting Zhao,

Zihao Huang

et al.

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(33)

Published: July 8, 2022

Abstract Water electrolysis is regarded as an efficient and green method to produce hydrogen gas, a clean energy carrier that holds the key solving global problems. So far, efficiency large‐scale application of water are restricted by electrocatalytic activity applied catalysts. Recently, reconstruction phenomenon electrocatalysts during catalytic reaction has been discovered, which could form reactive sites for both oxygen evolution reactions. Regulation process generate large number species with high since demonstrated effective strategy enhance performance electrocatalysts. This review summarizes recent progress in regulation strategies First, mechanism briefly introduced, critical factors regarding systematically discussed, followed brief introduction advanced characterization reconstruction. Moreover, modulation summarized reported examples highlighting promoted effects on process. Finally, challenges facing surface‐reconstructed catalysts future discussed.

Language: Английский

Citations

275
Water splitting performance of metal and non-metal-doped transition metal oxide electrocatalysts DOI

Ahmed H. Al-Naggar,

Nanasaheb M. Shinde,

Jeom-Soo Kim

et al.

Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 474, P. 214864 - 214864

Published: Oct. 12, 2022

Language: Английский

Citations

257
Transition metal-based catalysts for electrochemical water splitting at high current density: current status and perspectives DOI Open Access
Shasha Li, Enze Li, Xiaowei An

et al.

Nanoscale, Journal Year: 2021, Volume and Issue: 13(30), P. 12788 - 12817

Published: Jan. 1, 2021

Current popular transition metal-based electrocatalysts developed for HER/OER in water splitting at high current density are critically reviewed and discussed.

Language: Английский

Citations

253
Single-site Pt-doped RuO 2 hollow nanospheres with interstitial C for high-performance acidic overall water splitting DOI Creative Commons
Juan Wang, Hao Yang, Fan Li

et al.

Science Advances, Journal Year: 2022, Volume and Issue: 8(9)

Published: March 2, 2022

Realizing stable and efficient overall water splitting is highly desirable for sustainable hydrogen production yet challenging because of the rapid deactivation electrocatalysts during acidic oxygen evolution process. Here, we report that single-site Pt-doped RuO 2 hollow nanospheres (SS Pt-RuO HNSs) with interstitial C can serve as active in 0.5 M H SO 4 . The performance toward have surpassed most reported catalysts. Impressively, SS HNSs exhibit promising stability polymer electrolyte membrane electrolyzer at 100 mA cm −2 continuous operation hours. Detailed experiments reveal elongate Ru-O Pt-O bonds, presence Pt readily vary electronic properties improve OER activity by reducing energy barriers enhancing dissociation * O species.

Language: Английский

Citations

215
Revealing the role of interfacial water and key intermediates at ruthenium surfaces in the alkaline hydrogen evolution reaction DOI Creative Commons
Xing Chen, Xiaoting Wang, Jiabo Le

et al.

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Aug. 30, 2023

Ruthenium exhibits comparable or even better alkaline hydrogen evolution reaction activity than platinum, however, the mechanistic aspects are yet to be settled, which elucidated by combining in situ Raman spectroscopy and theoretical calculations herein. We simultaneously capture dynamic spectral evidence of Ru surfaces, interfacial water, *H *OH intermediates. surfaces exist different valence states potential range, dissociating water differently generating two distinct *H, resulting activities. The local cation tuning effect hydrated Na+ ion large work function high-valence Ru(n+) promote dissociation. Moreover, compared low-valence Ru(0) have more moderate adsorption energies for *OH. They, therefore, facilitate activity. Our findings demonstrate regulation state on intermediates, finally catalytic activity, provide guidelines rational design high-efficiency catalysts.

Language: Английский

Citations

209
Nanostructured Metal Phosphide Based Catalysts for Electrochemical Water Splitting: A Review DOI
Pradnya M. Bodhankar, Pradip B. Sarawade, Prashant Kumar

et al.

Small, Journal Year: 2022, Volume and Issue: 18(21)

Published: March 13, 2022

Abstract Amongst various futuristic renewable energy sources, hydrogen fuel is deemed to be clean and sustainable. Electrochemical water splitting (EWS) an advanced technology produce pure in a cost‐efficient manner. The electrocatalytic evolution reaction (HER) oxygen (OER) are the vital steps of EWS have been at forefront research over past decades. low‐cost nanostructured metal phosphide (MP)‐based electrocatalysts exhibit unconventional physicochemical properties offer very high turnover frequency (TOF), low potential, mass activity with improved efficiency, long‐term stability. Therefore, they potential meet practical challenges for supporting future economy. This review discusses recent progress MP‐based catalysts emphasis given on in‐depth understanding catalytic innovative synthetic strategies through combined experimental (in situ/operando techniques) theoretical investigations. Finally, challenges, critical issues, outlook field electrolysis addressed.

Language: Английский

Citations

176
Boosting interfacial charge transfer for alkaline hydrogen evolution via rational interior Se modification DOI
Yi Liu, Qingguo Feng, Wei Liu

et al.

Nano Energy, Journal Year: 2020, Volume and Issue: 81, P. 105641 - 105641

Published: Nov. 28, 2020

Language: Английский

Citations

163
“d‐Electron Complementation” Induced V‐Co Phosphide for Efficient Overall Water Splitting DOI
Rui Zhang, Zhenhua Wei, Gaoyang Ye

et al.

Advanced Energy Materials, Journal Year: 2021, Volume and Issue: 11(38)

Published: Sept. 1, 2021

Abstract To generate “green hydrogen,” electrochemical water splitting is regarded as the most promising method, which requires highly efficient bifunctional electrocatalysts to accelerate hydrogen and oxygen evolution reactions (HER OER). Herein, a “d‐electron complementation” principle develop such candidates proposed. By taking advantage of filling characteristics 3d orbitals, vanadium‐cobalt phosphide (V‐CoP) synthesized. According X‐ray absorption fine structure photoelectron spectroscopy investigation, V can disorder coordination environment Co, leading increased/decreased charge density in Co(P)/Co(O). As result, V‐CoP shows impressive activity, only needs overpotentials 46 267 mV deliver 10 mA cm −2 for HER OER, respectively. Density functional theory calculations reveal that accelerated H 2 O dissociation process on VO x /CoO /CoP surface conversion kinetics V‐neighboring CoCo bridge site result promoted activity. Furthermore, up‐shifted d‐band center V‐CoOOH endows Co with lowered energy barrier OER. This work serves proof‐of‐concept application principle, be generalized guideline design novel catalysts.

Language: Английский

Citations

159