A high-entropy phosphate catalyst for oxygen evolution reaction

Qiao, Haiyu; Wang, Xizheng; Dong, Qi; Zheng, Hongkui; Chen, Gang; Hong, Min; Yang, Chunpeng; Wu, Mei‐Ling; He, Kai; Hu, Liangbing

doi:10.1016/j.nanoen.2021.106029

Cited by 116 publications

(72 citation statements)

References 68 publications

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“…At overpotential of 270 mV, the FeNiCoCrMnS 2 delivers a current density of 335 mA cm -2 , outperforming of many reported transition metal chalcogenides, transition metal chalcogenides's derivatives, and other HEMs catalysts (Figure 3b and Table S2, Supporting Information). [11,12,15,16,19,20,[32][33][34][35][36] Furthermore, to yield an even higher current density of 1000 mA cm -2 , the FeNiCoCrMnS 2 only requires overpotential of 308 mV, comparable to many recently reported nonprecious, state-of-the-art catalysts, such as S-(Ni,Fe)OOH (≈350 mV), [19] (Ni,Fe)OOH (289 mV), [37] NiFe-LDH/Cu (315 mV). [38] At 100 mA cm -2 , the FeNiCoCrMnS 2 shows 13, 24, 26, and 51 mV of overpotential improvements over the FeNiCoCrS 2 , FeNiCoS x , FeNiS x , and FeS x , respectively.…”

Section: -mentioning

confidence: 69%

Self‐Reconstruction of Sulfate‐Containing High Entropy Sulfide for Exceptionally High‐Performance Oxygen Evolution Reaction Electrocatalyst

Nguyen

Lin

et al. 2021

Adv Funct Materials

153

122

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Novel earth-abundant metal sulfate-containing high entropy sulfides, FeNiCo-CrXS 2 (where X = Mn, Cu, Zn, or Al), are synthesized via a two-step solvothermal method. It is shown that sulfate-containing FeNiCoCrMnS 2 exhibits superior oxygen evolution reaction (OER) activity with an exceptionally low overpotential of 199, 246, 285, and 308 mV at current densities of 10, 100, 500, and 1000 mA cm -2 , respectively, and surpassing its unary-, binary-, ternary-, and quaternary-metal counterparts. The electrocatalyst yields exceptional stability after 12 000 cycles and 55 h of durability even at a high current density of 500 mA cm -2 . Various in situ and ex situ analyses are used to investigate the self-reconstruction of the sulfides during the OER for the first time. The resulting metal (oxy)hydroxide is believed to be the true active center for OER. The remaining sulfate also contributes to the catalytic activity. Density function theory calculation is in good agreement with the experimental result. The extraordinary OER performance of the high entropy sulfide brings a great opportunity for desirable catalyst design for practical applications.

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Section: -mentioning

confidence: 69%

Self‐Reconstruction of Sulfate‐Containing High Entropy Sulfide for Exceptionally High‐Performance Oxygen Evolution Reaction Electrocatalyst

Nguyen

Lin

et al. 2021

Adv Funct Materials

153

122

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“…High-entropy alloy composite materials or other highentropy materials also need to be further expanded, such as carbides, oxides, sulfides, nitrides, halides, diborides, phosphate, and intermetallic compounds. [193][194][195][196][197][198][199][200][201][202][203][204][205] Prepare different high-entropy alloy composite materials, such as core-shell structure, interface structure formed between high-entropy alloy and different substrates, etc., which can also adjust the electronic structure of high-entropy alloy (charge transfer, strain, bonding, etc.) to promote its catalytic effect.…”

Section: Discussionmentioning

confidence: 99%

Multi‐Sites Electrocatalysis in High‐Entropy Alloys

Lai

et al. 2021

Adv Funct Materials

161

135

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High‐entropy alloys (HEAs) have attracted widespread attention in electrocatalysis due to their unique advantages (adjustable composition, complex surface, high tolerance, etc.). They allow for the formation of new and tailorable active sites in multiple elements adjacent to each other, and the interaction can be tailored by rational selection of element configuration and composition. However, it needs to be further explored in catalyst design, the interaction of elements, and the determination of active sites. This review article focuses on the important progress for multi‐sites electrocatalysis in HEAs. The classification is done on the basis of catalytic reaction, including hydrogen evolution reaction, oxygen evolution reaction, oxygen reduction reaction, alcohol oxidation reaction, carbon dioxide reduction reaction, and nitrogen reduction reaction. Based on experiments and theories, a more in‐depth exploration of the high catalytic activity of HEAs will be conducted, including the selection of elements (the special role of each element in catalysis) and the multi‐sites effect. This review can provide the basis for the element selection and design of HEAs in some reactions, to adjust the compositions of HEAs to improve their intrinsic activity. Furthermore, the remaining challenges and future directions for promising research fields are also provided.

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“…[ 63 , 64 ] In view of the unique properties like high entropy effect, large lattice distortion, and cocktail effect, high‐entropy materials (HEMs) derived from HEAs manifest great potential as promising electrocatalysts, such as FeNiCoCrMnS 2 [ 65 ] and CoFeNiMnMoPi. [ 66 ] It is believed that the combination of hollow structure with HEMs can shed some light on the design of efficient water‐splitting electrocatalysts.…”

Section: Hollow Direct Electrocatalysts For Water Splittingmentioning

confidence: 99%

Design and Synthesis of Hollow Nanostructures for Electrochemical Water Splitting

et al. 2022

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Electrocatalytic water splitting using renewable energy is widely considered as a clean and sustainable way to produce hydrogen as an ideal energy fuel for the future. Electrocatalysts are indispensable elements for large‐scale water electrolysis, which can efficiently accelerate electrochemical reactions occurring at both ends. Benefitting from high specific surface area, well‐defined void space, and tunable chemical compositions, hollow nanostructures can be applied as promising candidates of direct electrocatalysts or supports for loading internal or external electrocatalysts. Herein, some recent progress in the structural design of micro‐/nanostructured hollow materials as advanced electrocatalysts for water splitting is summarized. First, the design principles and corresponding strategies toward highly effective hollow electrocatalysts for oxygen/hydrogen evolution reactions are highlighted. Afterward, an overview of current reports about hollow electrocatalysts with diverse architectural designs and functionalities is given, including direct hollow electrocatalysts with single‐shelled, multi‐shelled, or open features and heterostructured electrocatalysts based on hollow hosts. Finally, some future research directions of hollow electrocatalysts for water splitting are discussed based on personal perspectives.

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A high-entropy phosphate catalyst for oxygen evolution reaction

Cited by 116 publications

References 68 publications

Self‐Reconstruction of Sulfate‐Containing High Entropy Sulfide for Exceptionally High‐Performance Oxygen Evolution Reaction Electrocatalyst

Self‐Reconstruction of Sulfate‐Containing High Entropy Sulfide for Exceptionally High‐Performance Oxygen Evolution Reaction Electrocatalyst

Multi‐Sites Electrocatalysis in High‐Entropy Alloys

Design and Synthesis of Hollow Nanostructures for Electrochemical Water Splitting

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