Progresses on high-entropy nano-catalysts for electrochemical energy conversion reactions

Zhang, Lihua; Wu, Tong; Zhan, Yinbo; Dong, Yilin; Wei, Fei; Zhang, Dongliang; Zhou, Bowei; Tan, Zheng; Zhao, Changying; Long, Xia

doi:10.1039/d3ta07107c

Cited by 3 publications

(2 citation statements)

References 164 publications

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“…206 Highentropy metal phosphides (HEMPs), integrating multiple metal elements, further enhance electrocatalytic performance by providing compositional flexibility and multiple active sites (Figure 9). 207 Notably, HEMPs have emerged as ideal candidates for water splitting electrocatalysis, as demonstrated by Lu et al's synthesis of NiCoFeMnCrP nanoparticles, which exhibited remarkable performance in both OER and hydrogen evolution reaction (HER). 209 Mu et al also demonstrated the potential of HEMPs, synthesized through a eutectic solvent method, with uniform elemental distribution facilitating strong synergistic effects and enhanced electrocatalytic performance, reaffirming the promising outlook of HEMPs in electrochemical water splitting applications (Figure 10).…”

Section: Alkaline Electrolytementioning

confidence: 99%

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Recent Advances in Electrochemical Water Splitting Electrocatalysts: Categorization by Parameters and Catalyst Types

Perumal,

Pokhrel,

Muhammad

et al. 2024

ACS Materials Lett.

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Hydrogen energy, heralded as a novel, clean, and highly efficient energy source, stands at the forefront of initiatives aimed at decarbonizing and fostering a sustainable carbon-neutral economy. Recent strides in hydrogen production through water splitting have marked significant progress, leveraging its inherent benefits, such as zero carbon emissions, safety, and exceptional product purity. Despite these advancements, challenges persist in surmounting the substantial energy barrier and watersplitting costs. Many efficient electrocatalysts have been innovatively designed and reported to address these hurdles. However, the translation of these advances into industrial-scale applications faces multifaceted obstacles. Urgent demands for highperformance electrocatalysts meeting industrial standards underscore the imperative for a deeper comprehension of water-splitting systems. This review delves into the latest developments in water electrolysis, synthesizing experimental findings and promising strategies with different electrochemical parameters along with high entropy metals, doping engineering, interface construction, and defect engineering. Despite considerable strides in creating efficient watersplitting electrocatalysts and numerous recent investigations, numerous challenges persist, impeding the widespread industrial implementation of electrolytic water splitting. By providing a comprehensive overview, this review aims to furnish a knowledge-driven framework in fundamental science while fostering inspiration for technical engineering endeavors to craft efficient electrocatalysts tailored for water splitting.

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Section: Alkaline Electrolytementioning

confidence: 99%

“…High-entropy metal phosphides (HEMPs), integrating multiple metal elements, further enhance electrocatalytic performance by providing compositional flexibility and multiple active sites (Figure ). …”

mentioning

confidence: 99%

Recent Advances in Electrochemical Water Splitting Electrocatalysts: Categorization by Parameters and Catalyst Types

Perumal,

Pokhrel,

Muhammad

et al. 2024

ACS Materials Lett.

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Alkali Metals Activated High Entropy Double Perovskites for Boosted Hydrogen Evolution Reaction

Sun,

Lai,

Ding

et al. 2024

Advanced Science

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An efficient and facile water dissociation process plays a crucial role in enhancing the activity of alkaline hydrogen evolution reaction (HER). Considering the intricate influence between interfacial water and intermediates in typical catalytic systems, meticulously engineered catalysts should be developed by modulating electron configurations and optimizing surface chemical bonds. Here, a high‐entropy double perovskite (HEDP) electrocatalyst La2(Co1/6Ni1/6Mg1/6Zn1/6Na1/6Li1/6)RuO6, achieving a reduced overpotential of 40.7 mV at 10 mA cm−2 and maintaining exemplary stability over 82 h in a 1 m KOH electrolyte is reported. Advanced spectral characterization and first‐principles calculations elucidate the electron transfer from Ru to Co and Ni positions, facilitated by alkali metal‐induced super‐exchange interaction in high‐entropy crystals. This significantly optimizes hydrogen adsorption energy and lowers the water decomposition barrier. Concurrently, the super‐exchange interaction enhances orbital hybridization and narrows the bandgap, thus improving catalytic efficiency and adsorption capacity while mitigating hysteresis‐driven proton transfer. The high‐entropy framework also ensures structural stability and longevity in alkaline environments. The work provides further insights into the formation mechanisms of HEDP and offers guidelines for discovering advanced, efficient hydrogen evolution catalysts through super‐exchange interaction.

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Recent advancements and prospects in noble and non-noble electrocatalysts for materials methanol oxidation reactions

Singh,

Sharma,

Gupta

et al. 2024

Discover Nano

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The direct methanol fuel cell (DMFC) represents a highly promising alternative power source for small electronics and automobiles due to its low operating temperatures, high efficiency, and energy density. The methanol oxidation process (MOR) constitutes a fundamental chemical reaction occurring at the positive electrode of a DMFC. Pt-based materials serve as widely utilized MOR electrocatalysts in DMFCs. Nevertheless, various challenges, such as sluggish reaction rates, high production costs primarily attributed to the expensive Pt-based catalyst, and the adverse effects of CO poisoning on the Pt catalysts, hinder the commercialization of DMFCs. Consequently, endeavors to identify an alternative catalyst to Pt-based catalysts that mitigate these drawbacks represent a critical focal point of DMFC research. In pursuit of this objective, researchers have developed diverse classes of MOR electrocatalysts, encompassing those derived from noble and non-noble metals. This review paper delves into the fundamental concept of MOR and its operational mechanisms, as well as the latest advancements in electrocatalysts derived from noble and non-noble metals, such as single-atom and molecule catalysts. Moreover, a comprehensive analysis of the constraints and prospects of MOR electrocatalysts, encompassing those based on noble metals and those based on non-noble metals, has been undertaken.

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Progresses on high-entropy nano-catalysts for electrochemical energy conversion reactions

Abstract: Nanostructured high-entropy materials (HEMs) have garnered significant attention as a burgeoning class of materials in the field of electrocatalysis, due to their exceptional structural and functional properties. Many milestones have...

Cited by 3 publications

References 164 publications

Recent Advances in Electrochemical Water Splitting Electrocatalysts: Categorization by Parameters and Catalyst Types

Recent Advances in Electrochemical Water Splitting Electrocatalysts: Categorization by Parameters and Catalyst Types

Alkali Metals Activated High Entropy Double Perovskites for Boosted Hydrogen Evolution Reaction

Recent advancements and prospects in noble and non-noble electrocatalysts for materials methanol oxidation reactions

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