Enhanced electrocatalytic performance for H2O2 generation by boron-doped porous carbon hollow spheres

Wang, Zhaohui; Sun, Zehan; Li, Kun; Fan, Keyi; Tian, Tian; Jiang, Haomin; Jin, Honglei; Li, Ang; Tang, Yang; Sun, Yanzhi; Wan, Pingyu; Chen, Yongmei

doi:10.1016/j.isci.2024.109553

iScience

2024

DOI: 10.1016/j.isci.2024.109553

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Enhanced electrocatalytic performance for H2O2 generation by boron-doped porous carbon hollow spheres

Zhaohui Wang,

Zehan Sun,

Kun Li

et al.

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2024

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Fluorine-Doped Graphene Oxide-Modified Graphite Felt Cathode for Hydrogen Peroxide Generation

Hu,

Wang,

Chen

et al. 2024

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Electrochemical oxygen reduction via the two-electron pathway (2e-ORR) is an emerging method for producing H2O2. It is cleaner, safer, and more convenient compared to the anthraquinone process. Graphite felt is one of the cathode candidates for large-scale cells due to its excellent mechanical properties. However, commercial graphite felt often fails to achieve the desired hydrogen-peroxide yield because of its low catalytic selectivity for the 2e-ORR pathway. Fluorine-doped carbon materials are expected to enhance 2e-ORR selectivity. This is because the electronic structure of carbon atoms adjacent to fluorine atoms may facilitate the production of hydrogen peroxide while hindering its further reduction. In this study, fluorine-doped graphene oxide (FGO) was prepared by the hydrothermal method. Subsequently, graphite felt modified with FGO was fabricated and used as the cathode for H2O2 production. The results indicated that in alkaline media, the graphite felt modified with FGO achieved a catalytic selectivity of 93% and a generation rate of 8.91 mg cm⁻2 h⁻¹. In comparison, commercial graphite felt had a catalytic selectivity of 75% and a generation rate of 2.10 mg cm⁻2 h⁻¹. Moreover, graphite felt modified by FGO also exhibited excellent electrocatalytic performance for H2O2 generation in neutral media. This research provides a fundamental study to promote the application of graphite felt in the environmentally friendly electrocatalytic production of hydrogen peroxide in industries.

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Fluorine-Doped Graphene Oxide-Modified Graphite Felt Cathode for Hydrogen Peroxide Generation

Hu,

Wang,

Chen

et al. 2024

Catalysts

View full text Add to dashboard Cite

show abstract

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Enhanced electrocatalytic performance for H2O2 generation by boron-doped porous carbon hollow spheres

Cited by 1 publication

References 38 publications

Fluorine-Doped Graphene Oxide-Modified Graphite Felt Cathode for Hydrogen Peroxide Generation

Fluorine-Doped Graphene Oxide-Modified Graphite Felt Cathode for Hydrogen Peroxide Generation

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