Recent progress in energy-saving electrocatalytic hydrogen production <i>via</i> regulating the anodic oxidation reaction

Gao, Taotao; An, Qi; Tang, Xiangmin; Yue, Qu; Zhang, Yang; Li, Bing; Li, Panpan; Jin, Zhaoyu

doi:10.1039/d4cp01680g

Phys. Chem. Chem. Phys.

2024

DOI: 10.1039/d4cp01680g

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Recent progress in energy-saving electrocatalytic hydrogen production via regulating the anodic oxidation reaction

Taotao Gao,

Qi An,

Xiangmin Tang

et al.

Abstract: Hydrogen energy with the advantages of high calorific value, renewable nature, and zero carbon emissions is considered an ideal candidate for clean energy in the future. The electrochemical decomposition of...

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2024

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Cited by 2 publications

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Phosphorus and Oxygen Co-doping Inducing Surface Defects of Carbon Nanospheres to Enhance the Catalytic Performance for Two-Electron Oxygen Reduction Reaction

Qiu,

Feng,

Song

et al. 2024

Ind. Eng. Chem. Res.

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Electrochemical oxygen reduction reaction (ORR) is a promising alternative to the conventional anthraquinone oxidation process, with high energy consumption and massive pollutant discharge, for hydrogen peroxide (H 2 O 2 ) production. However, improving the selectivity of two-electron (2e − ) ORR toward H 2 O 2 remains a large challenge. Here, a simple and scalable P, O-codoped strategy is proposed to improve the catalytic activity and H 2 O 2 selectivity of the low-cost carbon nanospheres (P-O-CNS). The optimal O and P contents and abundant defects make P-O-CNS-800 obtain the highest selectivity for H 2 O 2 (95.47% at 0.580 V vs RHE), greatly superior to those of the initial O-CNS (75.74%) and other P-O-CNS samples with low doping content. The theoretical investigation further reveals the synergistic effect of doped P and defect structures optimizing the adsorption of *OOH on the active sites near the oxygen-containing functional group as the reason for the enhanced 2e − ORR catalytic activity. This study offers comprehensive insight into the regulating mechanism of the carbon structures with multiheteroatom doping for improved ORR activity as well as H 2 O 2 selectivity and then provides more possibilities for the rational regulation of catalysts to obtain a high-efficiency catalytic performance.

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Phosphorus and Oxygen Co-doping Inducing Surface Defects of Carbon Nanospheres to Enhance the Catalytic Performance for Two-Electron Oxygen Reduction Reaction

Qiu,

Feng,

Song

et al. 2024

Ind. Eng. Chem. Res.

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Developments in Nanostructured MoS2-Decorated Reduced Graphene Oxide Composite Aerogel as an Electrocatalyst for the Hydrogen Evolution Reaction

Thangarasu,

Bhosale,

Palanisamy

et al. 2024

Gels

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Developing lightweight, highly active surfaces with a high level of performance and great stability is crucial for ensuring the dependability of energy harvesting and conversion devices. Aerogel-based electrocatalysts are an efficient option for electrocatalytic hydrogen production because of their numerous benefits, such as their compatibility with interface engineering and their porous architecture. Herein, we report on the facile synthesis of a nanorod-like molybdenum sulfide–reduced graphene oxide (M-rG) aerogel as an electrocatalyst for the hydrogen evolution reaction (HER). The 3D architecture of the network-like structure of the M-rG hybrid aerogel was created via the hydrothermal technique, using a saturated NaCl solution-assisted process, where the MoS2 was homogeneously incorporated within the interconnected rGO aerogel. The optimized M-rG-300 aerogel electrocatalyst had a significantly decreased overpotential of 112 mV at 10 mA/cm2 for the HER in alkaline conditions. The M-rG-300 also showed a higher level of reliability. The remarkable efficiency of the HER involving the M-rG-300 is principally attributed to the excellent connectivity between the rGO and MoS2 in the aerogel structure. The efficient interconnection influenced the achievement of a larger electrochemically active surface area, increased electrical conductivity, and the exposure of more active sites for the HER. Furthermore, the creation of a synergistic effect in the M-rG-300 aerogel is the most probable mechanism to boost the electrocatalytic activity.

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Recent progress in energy-saving electrocatalytic hydrogen production via regulating the anodic oxidation reaction

Abstract: Hydrogen energy with the advantages of high calorific value, renewable nature, and zero carbon emissions is considered an ideal candidate for clean energy in the future. The electrochemical decomposition of...

Cited by 2 publications

References 146 publications

Phosphorus and Oxygen Co-doping Inducing Surface Defects of Carbon Nanospheres to Enhance the Catalytic Performance for Two-Electron Oxygen Reduction Reaction

Phosphorus and Oxygen Co-doping Inducing Surface Defects of Carbon Nanospheres to Enhance the Catalytic Performance for Two-Electron Oxygen Reduction Reaction

Developments in Nanostructured MoS2-Decorated Reduced Graphene Oxide Composite Aerogel as an Electrocatalyst for the Hydrogen Evolution Reaction

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