Recent Advances in Electrocatalytic Two-Electron Water Oxidation for Green H2O2 Production

Lin, Liwu; Sun, Z.; Chen, H.S.; Lian, Zhao; Sun, M.; Yang, Yujue; Liao, Zhensheng; Wang, Xinyu; Li, Xinxin; Tien, Cheng

doi:10.3866/pku.whxb202305019

Acta Physico-Chimica Sinica

2024

DOI: 10.3866/pku.whxb202305019

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Recent Advances in Electrocatalytic Two-Electron Water Oxidation for Green H2O2 Production

Liwu Lin¹,

Z. Sun²,

H.S. Chen³

et al.

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Cited by 4 publications

References 85 publications

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Rational Design of Oxygen Species Adsorption on Nonnoble Metal Catalysts for Two‐Electron Oxygen Reduction

He,

Xia,

et al. 2023

Advanced Energy Materials

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Molecular oxygen can be electrochemically reduced to water via the 4e− transfer pathway or hydrogen peroxide via a 2e− pathway, which holds significant relevance within energy conversion and chemical synthesis. The specific oxygen reduction reaction (ORR) pathways intricately hinge upon the adsorption configuration and state of oxygen species. Precisely steering the adsorption state of oxygen species at the active sites serves as a crucial guiding principle for the design and preparation of ORR catalysts. This review succinctly summarizes the strategies employed to regulate the adsorption state of oxygen species on nonnoble metal catalyst surfaces, encompassing insights into the adsorption mechanism and state regulation of oxygen intermediates, with a particular focus on the 2e− ORR pathway to produce H2O2. Moreover, the persistent challenges that remain in the realm of non‐noble metal oxygen catalysts are pointed out and the prospects for their future development are meticulously evaluated.

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Rational Design of Oxygen Species Adsorption on Nonnoble Metal Catalysts for Two‐Electron Oxygen Reduction

He,

Xia,

et al. 2023

Advanced Energy Materials

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Reconstructed Hydroxyl Coordination Field Enhances Mass Transfer for Efficient Electrocatalytic Water Oxidation

Jiang,

Dong,

Liu

et al. 2024

Small

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Mass transfer factor plays an indispensable role in high current density to accelerate the oxygen evolution reaction (OER) process, yet research on modulating reactant mass transport remains limited. Herein, by leveraging the dual acid‐base properties of aluminum sites, both the activation of the electronic activity of the layer for layered double hydroxides (LDH) and construction of the interlayer hydroxide coordination field (IHCF) have been achieved through in situ electrochemical reconstruction. It not only facilitates charge transfer and the surface catalytic transformation of reaction intermediates but, most notably, the presence of the IHCF significantly enhances the mass transport of reactants. As a result, the overpotential of LDHs with IHCF is only 164 mV, significantly better than the reported Ni‐based catalysts. Deuterium kinetic isotope effect experiments and pH‐dependence measurements demonstrate that the IHCF effectively enhances substrate mass transport capability and structural stability, thereby accelerating the proton‐coupled electron transfer process. To further validate the high mass transport characteristics, stability tests of the alkaline flow electrolyzer show that catalysts maintain over 1000 h of stability at a high current density. This work suggests that the IHCF effect can be utilized for further design and synthesis of efficient water oxidation catalysts for practical application.

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Progress and challenges for electrocatalytic production of hydrogen peroxide

He,

Luo,

Zhang

et al. 2024

Applied Catalysis A: General

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Recent Advances in Electrocatalytic Two-Electron Water Oxidation for Green H2O2 Production

Cited by 4 publications

References 85 publications

Rational Design of Oxygen Species Adsorption on Nonnoble Metal Catalysts for Two‐Electron Oxygen Reduction

Rational Design of Oxygen Species Adsorption on Nonnoble Metal Catalysts for Two‐Electron Oxygen Reduction

Reconstructed Hydroxyl Coordination Field Enhances Mass Transfer for Efficient Electrocatalytic Water Oxidation

Progress and challenges for electrocatalytic production of hydrogen peroxide

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