In Situ Reconstruction of High‐Entropy Heterostructure Catalysts for Stable Oxygen Evolution Electrocatalysis under Industrial Conditions DOI
Jue Hu, Tianqi Guo,

Xinyu Zhong

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(14)

Published: Jan. 3, 2024

Abstract Despite of urgent needs for highly stable and efficient electrochemical water‐splitting devices, it remains extremely challenging to acquire oxygen evolution reaction (OER) electrocatalysts under harsh industrial conditions. Here, a successful in situ synthesis FeCoNiMnCr high‐entropy alloy (HEA) oxide (HEO) heterocatalysts via Cr‐induced spontaneous reconstruction strategy is reported, demonstrated that they deliver excellent ultrastable OER electrocatalytic performance with low overpotential 320 mV at 500 mA cm −2 negligible activity loss after maintaining 100 240 h. Remarkably, the heterocatalyst holds outstanding long‐term stability condition 6 m KOH 85 °C current density as high over Density functional theory calculations reveal formation HEA‐HEO heterostructure can provide electroactive sites possessing robust valence states guarantee process, leading enhancement electroactivity. The findings such conditions offer new perspective designing constructing practical water splitting.

Language: Английский

Lattice distortion induced Ce-doped NiFe-LDH for efficient oxygen evolution DOI

Yuanyuan Liao,

Ruchen He,

Wanghao Pan

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 464, P. 142669 - 142669

Published: March 29, 2023

Language: Английский

Citations

170
Fundamental Understanding of Structural Reconstruction Behaviors in Oxygen Evolution Reaction Electrocatalysts DOI Creative Commons
Haoyin Zhong, Qi Zhang, Junchen Yu

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(31)

Published: June 29, 2023

Abstract Transition metal‐based oxyhydroxides (MOOH) derived from the irreversible structural reconstruction of precatalysts are often acknowledged as real catalytic species for oxygen evolution reaction (OER). Typically, reconstruction‐derived MOOH would exhibit superior OER activity compared to their directly synthesized counterparts, despite being fundamentally similar in chemistry. As such, has emerged a promising strategy boost electrocatalysts. However, in‐depth understanding origin reconstructed materials still remains ambiguous, which significantly hinders further developments highly efficient electrocatalysts based on In this review, comprehensive overview behaviors reported is provided and intrinsic chemical origins high efficiency toward unveiled. The fundamentals mechanisms, along with recommended characterization techniques dynamic process analyzing structure also interpreted. Finally, view chemistry, potential perspectives facilitate design synthesis durable electrocatalyst presented.

Language: Английский

Citations

151
Facet Engineering of Advanced Electrocatalysts Toward Hydrogen/Oxygen Evolution Reactions DOI Creative Commons
Changshui Wang, Qian Zhang, Bing Yan

et al.

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: Feb. 16, 2023

The electrocatalytic water splitting technology can generate high-purity hydrogen without emitting carbon dioxide, which is in favor of relieving environmental pollution and energy crisis achieving neutrality. Electrocatalysts effectively reduce the reaction barrier increase efficiency. Facet engineering considered as a promising strategy controlling ratio desired crystal planes on surface. Owing to anisotropy, with different orientations usually feature facet-dependent physical chemical properties, leading differences adsorption energies oxygen or intermediates, thus exhibit varied activity toward evolution (HER) (OER). In this review, brief introduction basic concepts, fundamental understanding mechanisms well key evaluating parameters for both HER OER are provided. formation facets comprehensively overviewed aiming give scientific theory guides realize dominant planes. Subsequently, three strategies selective capping agent, etching coordination modulation tune summarized. Then, we present an overview significant contributions facet-engineered catalysts HER, OER, overall splitting. particular, highlight that density functional calculations play indispensable role unveiling structure–activity correlation between plane catalytic activity. Finally, remaining challenges provided future prospects designing advanced electrocatalysts discussed.

Language: Английский

Citations

150
Lattice‐Strain Engineering for Heterogenous Electrocatalytic Oxygen Evolution Reaction DOI
Zhiqian Hou,

Chenghao Cui,

Yanni Li

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(39)

Published: Jan. 14, 2023

Abstract The energy efficiency of metal–air batteries and water‐splitting techniques is severely constrained by multiple electronic transfers in the heterogenous oxygen evolution reaction (OER), high overpotential induced sluggish kinetics has become an uppermost scientific challenge. Numerous attempts are devoted to enabling activity, selectivity, stability via tailoring surface physicochemical properties nanocatalysts. Lattice‐strain engineering as a cutting‐edge method for tuning geometric configuration metal sites plays pivotal role regulating interaction catalytic surfaces with adsorbate molecules. By defining d‐band center descriptor structure–activity relationship, individual contribution strain effects within state‐of‐the‐art electrocatalysts can be systematically elucidated OER optimization mechanism. In this review, fundamentals advancements strain‐catalysts showcased innovative trigger strategies enumerated, particular emphasis on feedback mechanism between precise regulation lattice‐strain optimal activity. Subsequently, modulation various attributes categorized impediments encountered practicalization strained effect discussed, ending outlook future research directions burgeoning field.

Language: Английский

Citations

137
Dual-atom catalysts for oxygen electrocatalysis DOI
Juan Wang, Zhao Chang-xin, Jia‐Ning Liu

et al.

Nano Energy, Journal Year: 2022, Volume and Issue: 104, P. 107927 - 107927

Published: Oct. 28, 2022

Language: Английский

Citations

130
Understanding the Effect of Second Metal on CoM (M = Ni, Cu, Zn) Metal–Organic Frameworks for Electrocatalytic Oxygen Evolution Reaction DOI
Jie Wu, Zhenjiang Yu, Yuanyuan Zhang

et al.

Small, Journal Year: 2021, Volume and Issue: 17(51)

Published: Oct. 28, 2021

Co-based bimetallic metal-organic frameworks (MOFs) have emerged as a kind of promising electrocatalyst for oxygen evolution reaction (OER). However, most present works MOFs are still in try-and-wrong stage, while the OER performance trend and underlying structure-function relationship remain unclear. To address this challenge, on carbon cloth (CC) (CoM MOFs/CC, M = Zn, Ni, Cu) prepared through room-temperature method, their structure compared systematically. Based results overpotential Tafel slope, order activity is ordered decreasing sequence: CoZn MOF > CoNi CoCu Co MOF. Spectroscopic studies clearly show that better CoM from higher oxidation state Co, which related to choice second metal. Theoretical calculations indicate possess strengthened adsorption O-containing intermediate, lower energy barrier towards OER. This study figures out effect metal suggests tuning electronic site can be an effective strategy other MOFs-based catalysts.

Language: Английский

Citations

121
Recent Advancements in Electrochemical Hydrogen Production via Hybrid Water Splitting DOI

Qizhu Qian,

Yin Zhu,

Nazir Ahmad

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(4)

Published: Oct. 10, 2023

Abstract As one of the most promising approaches to producing high‐purity hydrogen (H 2 ), electrochemical water splitting powered by renewable energy sources such as solar, wind, and hydroelectric power has attracted considerable interest over past decade. However, electrolysis process is seriously hampered sluggish electrode reaction kinetics, especially four‐electron oxygen evolution at anode side, which induces a high overpotential. Currently, emerging hybrid strategy proposed integrating thermodynamically favorable electro–oxidation reactions with cathode, providing new opportunity for energy–efficient H2 production. To achieve highly efficient cost–effective toward large–scale practical H production, much work been continuously done exploit alternative anodic oxidation cutting–edge electrocatalysts. This review will focus on recent developments production coupled reactions, including choice substrates, investigation electrocatalytic materials, deep understanding underlying mechanisms. Finally, some insights into scientific challenges now standing in way future advancement technique are shared, hope inspiring further innovative efforts this rapidly growing field.

Language: Английский

Citations

121
Electrochemical hydrogen production coupled with oxygen evolution, organic synthesis, and waste reforming DOI
Jialei Du,

Daili Xiang,

Kexin Zhou

et al.

Nano Energy, Journal Year: 2022, Volume and Issue: 104, P. 107875 - 107875

Published: Oct. 8, 2022

Language: Английский

Citations

120
High‐Valence Oxides for High Performance Oxygen Evolution Electrocatalysis DOI Creative Commons
Hao Wang, Tingting Zhai, Yifan Wu

et al.

Advanced Science, Journal Year: 2023, Volume and Issue: 10(22)

Published: May 30, 2023

Valence tuning of transition metal oxides is an effective approach to design high-performance catalysts, particularly for the oxygen evolution reaction (OER) that underpins solar/electric water splitting and metal-air batteries. Recently, high-valence (HVOs) are reported show superior OER performance, in association with fundamental dynamics charge transfer intermediates. Particularly considered adsorbate mechanism (AEM) lattice oxygen-mediated (LOM). High-valence states enhance performance mainly by optimizing e

Language: Английский

Citations

114
Facile Synthesis of Medium‐Entropy Metal Sulfides as High‐Efficiency Electrocatalysts toward Oxygen Evolution Reaction DOI
Wu Lei, Xiaoping Shen, Zhenyuan Ji

et al.

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 33(3)

Published: Nov. 10, 2022

Abstract Developing highly efficient and durable electrocatalysts toward oxygen evolution reaction (OER) is an urgent demand to produce clean hydrogen energy. In this study, a series of medium‐entropy metal sulfides (MEMS) (NiFeCoX) 3 S 4 (where X = Mn, Cr, Zn) are synthesized by facile one‐pot solvothermal strategy using molecular precursors. Benefiting from the multiple‐metal synergistic effect low crystallinity, these MEMS show significantly enhanced electrocatalytic OER activity compared with binary‐metal (NiFe) ternary‐metal (NiFeCo) counterparts. Especially, (NiFeCoMn) delivers overpotential 289 mV at 10 mA cm −2 , decent Tafel slope 75.6 dec −1 robust catalytic stability in alkaline medium, outperforming costly IrO 2 benchmark electrocatalyst majority reported sulfide‐based until now. These synthesis excellent performance bring great opportunity design desirable for practical application.

Language: Английский

Citations

105