High Configuration Entropy Activated Lattice Oxygen for O2 Formation on Perovskite Electrocatalyst DOI
Lina Tang, Yanling Yang,

Hongquan Guo

et al.

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(28)

Published: April 13, 2022

Abstract The single‐phase oxides with elemental complexity and compositional diversity, usually named high entropy oxides, feature homogeneously dispersed multi‐metallic elements in equiatomic concentration. unusual properties of endow their potential application clean‐energy‐related electrocatalysis. However, the possible fundamental relationship between configuration underlying catalytic mechanism is still not well understood established. Herein, a perovskite cobaltate consisting five equimolar metals B‐site (Mg, Mn, Fe, Co, Ni) employed as an electrocatalyst for oxygen evolution reaction (OER). serves effective tool to promote intrinsic activity Co reactive site manipulate OER mechanism. demonstrates lower overpotential 320 mV at current density 10 mA cm −2 , outperforming other counterparts. X‐ray spectroscopies disclose synergistic charge‐exchange effect among different cations formation new hole state. Combinatorially computational experimental results unveil enigma that leads random occupation cations, facilitates surface reconstruction, benefits stable vacancies. Owing these merits, O 2 found be kinetically favorable via lattice

Language: Английский

Water electrolysis: from textbook knowledge to the latest scientific strategies and industrial developments DOI Creative Commons
Marian Chatenet, Bruno G. Pollet, Dario R. Dekel

et al.

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(11), P. 4583 - 4762

Published: Jan. 1, 2022

Replacing fossil fuels with energy sources and carriers that are sustainable, environmentally benign, affordable is amongst the most pressing challenges for future socio-economic development.

Language: Английский

Citations

1077

Hydrogen production from water electrolysis: role of catalysts DOI Creative Commons
Shan Wang, Aolin Lu, Chuan‐Jian Zhong

et al.

Nano Convergence, Journal Year: 2021, Volume and Issue: 8(1)

Published: Feb. 11, 2021

As a promising substitute for fossil fuels, hydrogen has emerged as clean and renewable energy. A key challenge is the efficient production of to meet commercial-scale demand hydrogen. Water splitting electrolysis pathway achieve in terms energy conversion storage which catalysis or electrocatalysis plays critical role. The development active, stable, low-cost catalysts electrocatalysts an essential prerequisite achieving desired electrocatalytic from water practical use, constitutes central focus this review. It will start with introduction performance evaluation various activity, stability, efficiency. This be followed by outlining current knowledge on two half-cell reactions, evolution reaction (HER) oxygen (OER), mechanisms alkaline acidic media. Recent advances design preparation nanostructured noble-metal non-noble metal-based discussed. New strategies insights exploring synergistic structure, morphology, composition, active sites increasing activity stability HER OER highlighted. Finally, future challenges perspectives robust towards also outlined.

Language: Английский

Citations

1031

Advanced Transition Metal‐Based OER Electrocatalysts: Current Status, Opportunities, and Challenges DOI
Kexin Zhang, Ruqiang Zou

Small, Journal Year: 2021, Volume and Issue: 17(37)

Published: June 10, 2021

Abstract Oxygen evolution reaction (OER) is an important half‐reaction involved in many electrochemical applications, such as water splitting and rechargeable metal–air batteries. However, the sluggish kinetics of its four‐electron transfer process becomes a bottleneck to performance enhancement. Thus, rational design electrocatalysts for OER based on thorough understanding mechanisms structure‐activity relationship vital significance. This review begins with introduction which include conventional adsorbate mechanism lattice‐oxygen‐mediated mechanism. The pathways related intermediates are discussed detail, several descriptors greatly assist catalyst screen optimization summarized. Some parameters suggested measurement criteria also mentioned discussed. Then, recent developments breakthroughs experimental achievements transition metal‐based reviewed reveal novel principles. Finally, some perspectives future directions proposed further catalytic enhancement deeper design. It believed that iterative improvements fundamental principles essential realize applications efficient energy storage conversion technologies.

Language: Английский

Citations

722

Transition metal-based bimetallic MOFs and MOF-derived catalysts for electrochemical oxygen evolution reaction DOI
Songsong Li, Yangqin Gao, Ning Li

et al.

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(4), P. 1897 - 1927

Published: Jan. 1, 2021

The review summarizes transition metal-based bimetallic MOFs and their derived materials as electrocatalytic for the OER. mechanisms of OER probed by DFT calculation andin situcharacterization techniques are also discussed.

Language: Английский

Citations

615

Recent Advances in Electrocatalysts for Proton Exchange Membrane Fuel Cells and Alkaline Membrane Fuel Cells DOI
Fei Xiao, Yucheng Wang, Zhi‐Peng Wu

et al.

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(50)

Published: March 21, 2021

Abstract The rapid progress of proton exchange membrane fuel cells (PEMFCs) and alkaline (AMFCs) has boosted the hydrogen economy concept via diverse energy applications in past decades. For a holistic understanding development status PEMFCs AMFCs, recent advancements electrocatalyst design catalyst layer optimization, along with cell performance terms activity durability are summarized here. activity, stability, different types electrocatalysts for both oxygen reduction reaction oxidation discussed compared. Research directions on further active, stable, low‐cost to meet ultimate commercialization AMFCs also discussed.

Language: Английский

Citations

471

Doping regulation in transition metal compounds for electrocatalysis DOI
An Zhang, Yongxiang Liang, Han Zhang

et al.

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(17), P. 9817 - 9844

Published: Jan. 1, 2021

This review summarizes the recent progress related to field of doping regulation in transition metal compounds, aiming give an overview this strategy for designing high-performance catalysts towards electrocatalytic applications.

Language: Английский

Citations

443

Metal Atom‐Doped Co3O4 Hierarchical Nanoplates for Electrocatalytic Oxygen Evolution DOI Creative Commons
Song Lin Zhang, Bu Yuan Guan, Xue Feng Lu

et al.

Advanced Materials, Journal Year: 2020, Volume and Issue: 32(31)

Published: June 26, 2020

Abstract Electrocatalysts based on hierarchically structured and heteroatom‐doped non‐noble metal oxide materials are of great importance for efficient low‐cost electrochemical water splitting systems. Herein, the synthesis a series hierarchical hollow nanoplates (NPs) composed ultrathin Co 3 O 4 nanosheets doped with 13 different atoms is reported. The involves cooperative etching−coordination−reorganization approach starting from zeolitic imidazolate framework‐67 (ZIF‐67) NPs. First, atom decorated ZIF‐67 NPs unique cross‐channels formed through Lewis acid etching species coordination process. Afterward, composite converted to solvothermal reaction, during which guest into octahedral sites . Density functional theory calculations suggest that doping small amount Fe near surface can greatly enhance electrocatalytic activity toward oxygen evolution reaction (OER). Benefiting structural compositional advantages, obtained Fe‐doped manifest superior performance OER an overpotential 262 mV at 10 mA cm −2 , Tafel slope 43 dec −1 excellent stability even high current density 100 50 h.

Language: Английский

Citations

413

Stability and deactivation of OER electrocatalysts: A review DOI
Feng Zeng, Chalachew Mebrahtu,

Longfei Liao

et al.

Journal of Energy Chemistry, Journal Year: 2022, Volume and Issue: 69, P. 301 - 329

Published: Jan. 29, 2022

Language: Английский

Citations

373

Recent Development and Future Perspectives of Amorphous Transition Metal‐Based Electrocatalysts for Oxygen Evolution Reaction DOI
Tianqi Guo, Lidong Li, Zhongchang Wang

et al.

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(24)

Published: May 1, 2022

Abstract Oxygen evolution reaction (OER), as a relevant half for water splitting to address the energy crisis, has captured great deal of attention. However, this technology always been impeded by lack highly efficient and stable electrocatalyst. Amorphous materials, which possess long‐range disorder only short‐range order over few atoms, are often superior their crystalline counterparts in electrocatalysis owing more active sites, broader chemical composition range, structural flexibility. This review first introduces some assessment criteria OER then presents theoretical modeling mechanisms state‐of‐the‐art amorphous transition metal‐based electrocatalysts, involving oxides, hydroxides, sulfides, phosphides, borides, composites, well practical applications OER. Finally, recent development, existing challenges, future perspectives electrocatalysts discussed. paper offers valuable guidance designing applications.

Language: Английский

Citations

329

Trimetallic Spinel NiCo2−xFexO4 Nanoboxes for Highly Efficient Electrocatalytic Oxygen Evolution DOI
Yi Huang, Song Lin Zhang, Xue Feng Lu

et al.

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(21), P. 11841 - 11846

Published: March 19, 2021

Abstract The development of efficient and low‐cost electrocatalysts toward the oxygen evolution reaction (OER) is critical for improving efficiency several electrochemical energy conversion storage devices. Here, we report an elaborate design synthesis porous Co‐based trimetallic spinel oxide nanoboxes (NiCo 2− x Fe O 4 NBs) by a novel metal‐organic framework engaged strategy, which involves chemical etching, cation exchange, subsequent thermal oxidation processes. Owing to structural compositional advantages, optimized NiCo NBs ( about 0.117) deliver superior electrocatalytic performance OER with overpotential 274 mV at 10 mA cm −2 , small Tafel slope 42 dec −1 good stability in alkaline electrolyte, much better than that bi/monometallic oxides even commercial RuO 2 .

Language: Английский

Citations

319