Host, Suppressor, and Promoter—The Roles of Ni and Fe on Oxygen Evolution Reaction Activity and Stability of NiFe Alloy Thin Films in Alkaline Media DOI Creative Commons
Fuxi Bao, Erno Kemppainen,

Iris Dorbandt

et al.

ACS Catalysis, Journal Year: 2021, Volume and Issue: 11(16), P. 10537 - 10552

Published: Aug. 9, 2021

Understanding the oxygen evolution reaction (OER) activity and stability of NiFe-based materials is important for achieving low-cost highly efficient electrocatalysts practical water splitting. Here, we report roles Ni Fe on OER metallic NiFe pure thin films in alkaline media. Our results support that Ni(OH)2/NiOOH does not contribute to directly, but it serves as an ideal host incorporation, which essential obtaining high activity. Furthermore, availability electrolyte found be necessary both maintain enhanced performance, while presence detrimental kinetics. The impacts species present KOH are consistent with dissolution/re-deposition mechanism proposed. Stability studies show will degrade under prolonged continuous operation. Satisfactory can, however, achieved intermittent operation, electrocatalyst cycled between degraded recovered states. Accordingly, two ranges, is, recovery range degradation range, Compared operation (i.e., range) generates a higher NiOOH content electrocatalyst, likely related deactivation. If electrode works certain period, at sufficiently low reduction potential, where Ni3+ reduced Ni2+, can maintained even improved if also electrolyte.

Language: Английский

A review on fundamentals for designing oxygen evolution electrocatalysts DOI
Jiajia Song, Chao Wei, Zhen‐Feng Huang

et al.

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 49(7), P. 2196 - 2214

Published: Jan. 1, 2020

The fundamentals related to the oxygen evolution reaction and catalyst design are summarized discussed.

Language: Английский

Citations

2124
Non-noble metal-nitride based electrocatalysts for high-performance alkaline seawater electrolysis DOI Creative Commons
Luo Yu, Qing Zhu, Shaowei Song

et al.

Nature Communications, Journal Year: 2019, Volume and Issue: 10(1)

Published: Nov. 8, 2019

Abstract Seawater is one of the most abundant natural resources on our planet. Electrolysis seawater not only a promising approach to produce clean hydrogen energy, but also great significance desalination. The implementation electrolysis requires robust and efficient electrocatalysts that can sustain splitting without chloride corrosion, especially for anode. Here we report three-dimensional core-shell metal-nitride catalyst consisting NiFeN nanoparticles uniformly decorated NiMoN nanorods supported Ni foam, which serves as an eminently active durable oxygen evolution reaction alkaline electrolysis. Combined with nanorods, have achieved industrially required current densities 500 1000 mA cm −2 at record low voltages 1.608 1.709 V, respectively, overall 60 °C. This discovery significantly advances development large-scale production.

Language: Английский

Citations

1066
Dynamic stability of active sites in hydr(oxy)oxides for the oxygen evolution reaction DOI
Dong Young Chung, Pietro Papa Lopes, Pedro Farinazzo Bergamo Dias Martins

et al.

Nature Energy, Journal Year: 2020, Volume and Issue: 5(3), P. 222 - 230

Published: March 16, 2020

Language: Английский

Citations

783
In-situ reconstructed Ru atom array on α-MnO2 with enhanced performance for acidic water oxidation DOI
Chao Lin, Jili Li, Xiaopeng Li

et al.

Nature Catalysis, Journal Year: 2021, Volume and Issue: 4(12), P. 1012 - 1023

Published: Dec. 17, 2021

Language: Английский

Citations

690
Non-precious-metal catalysts for alkaline water electrolysis: operando characterizations, theoretical calculations, and recent advances DOI
Jian Wang, Yang Gao, Hui Kong

et al.

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 49(24), P. 9154 - 9196

Published: Jan. 1, 2020

Advances of non-precious-metal catalysts for alkaline water electrolysis are reviewed, highlighting operando techniques and theoretical calculations in their development.

Language: Английский

Citations

645
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

545
A Cobalt–Iron Double-Atom Catalyst for the Oxygen Evolution Reaction DOI
Lichen Bai, Chia‐Shuo Hsu, Duncan T. L. Alexander

et al.

Journal of the American Chemical Society, Journal Year: 2019, Volume and Issue: 141(36), P. 14190 - 14199

Published: Aug. 16, 2019

Single-atom catalysts exhibit well-defined active sites and potentially maximum atomic efficiency. However, they are unsuitable for reactions that benefit from bimetallic promotion such as the oxygen evolution reaction (OER) in an alkaline medium. Here we show a single-atom Co precatalyst can be situ transformed into Co-Fe double-atom catalyst OER. This exhibits one of highest turnover frequencies among metal oxides. Electrochemical, microscopic, spectroscopic data, including those operando X-ray absorption spectroscopy, reveal dimeric moiety site catalyst. work demonstrates catalysis promising approach development defined highly OER catalysts.

Language: Английский

Citations

485
In Situ/Operando Studies for Designing Next-Generation Electrocatalysts DOI
Yanping Zhu, Jiali Wang,

Hang Chu

et al.

ACS Energy Letters, Journal Year: 2020, Volume and Issue: 5(4), P. 1281 - 1291

Published: March 19, 2020

It has been widely acknowledged that most electrocatalysts would undergo a structural reconstruction during the water splitting as well carbon dioxide (CO2) reduction reactions. Recently developed in situ and/or operando methods are gaining increasing interest judicious tools for investigations of heterogeneous electrocatalysis. In this Perspective, recent applications various characterization techniques tracking catalysts, identifying real active sites, and recording intermediates formed electrolysis CO2 reaction thoroughly summarized. Finally, on basis unique capabilities limitations each or technique, we established an "in probing map" corresponding technologies liquid–solid interfaces offer guidelines successful development next-generation efficient catalysts.

Language: Английский

Citations

380
Deciphering Iron‐Dependent Activity in Oxygen Evolution Catalyzed by Nickel–Iron Layered Double Hydroxide DOI
Seunghwa Lee, Lichen Bai, Xile Hu

et al.

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 59(21), P. 8072 - 8077

Published: Feb. 20, 2020

Nickel iron oxyhydroxide is the benchmark catalyst for oxygen evolution reaction (OER) in alkaline medium. Whereas presence of Fe ions essential to high activity, functions are currently under debate. Using isotope labeling and operando Raman spectroscopic experiments, we obtain turnover frequencies (TOFs) both Ni sites a series NiFe layered double hydroxides (LDHs), which structurally defined samples corresponding oxyhydroxides. The have TOFs 20-200 times higher than such that at an content 4.7 % above dominate catalysis. Higher contents lead larger structural disorder NiOOH host. A volcano-type correlation was found between NiOOH. Our work elucidates origin Fe-dependent activity LDH, suggests ordering as strategy improve OER catalysts.

Language: Английский

Citations

349
Oxygen Evolution/Reduction Reaction Catalysts: From In Situ Monitoring and Reaction Mechanisms to Rational Design DOI
Yonggui Zhao, Devi Prasad Adiyeri Saseendran, Chong Huang

et al.

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(9), P. 6257 - 6358

Published: March 21, 2023

The oxygen evolution reaction (OER) and reduction (ORR) are core steps of various energy conversion storage systems. However, their sluggish kinetics, i.e., the demanding multielectron transfer processes, still render OER/ORR catalysts less efficient for practical applications. Moreover, complexity catalyst–electrolyte interface makes a comprehensive understanding intrinsic mechanisms challenging. Fortunately, recent advances in situ/operando characterization techniques have facilitated kinetic monitoring under conditions. Here we provide selected highlights mechanistic studies with main emphasis placed on heterogeneous systems (primarily discussing first-row transition metals which operate basic conditions), followed by brief outlook molecular catalysts. Key sections this review focused determination true active species, identification sites, reactive intermediates. For in-depth insights into above factors, short overview metrics accurate characterizations is provided. A combination obtained time-resolved information reliable activity data will then guide rational design new Strategies such as optimizing restructuring process well overcoming adsorption-energy scaling relations be discussed. Finally, pending current challenges prospects toward development homogeneous presented.

Language: Английский

Citations

347