Three-Dimensional N-Doped Graphene Coated with B-Doped Iron Phosphide Electrocatalysts: Nonmetallic Element Co-Modification for Enhanced Dual-Ph Hydrogen Evolution Reaction

30 Pages Posted: 16 Jan 2024

See all articles by Shenqi Wei

Shenqi Wei

affiliation not provided to SSRN

Pingxing Xing

affiliation not provided to SSRN

Hualan Luo

affiliation not provided to SSRN

Xinyi Chen

affiliation not provided to SSRN

Liyi Dai

affiliation not provided to SSRN

Yuanyuan Wang

affiliation not provided to SSRN

Abstract

The construction of cost-effective and highly active transition metal phosphide-based electrocatalysts instead of noble metals through a feasible strategy is crucial for addressing the energy crisis. Herein, a novel three-dimensional structure N-doped RGO coated with a ‘worm-like’ B-doped FeP electrocatalyst (B-FeP/N-RGO) was successfully developed using a multi-step reaction. The composite catalyst possesses a unique three-dimensional structure that facilitates rapid mass transfer, gas release and exposure of abundant active sites, and non-metallic element doping optimizes the electronic structure of the matrix, which together improve the hydrogen evolution reaction performance. Notably, the B-FeP/N-RGO catalysts can achieve a current density of 10 mA cm-2 in both acidic and alkaline electrolytes with overpotentials of only 125 and 176 mV, while maintaining long-term stability. This study offers a promising approach for designing and fabricating highly efficient three-dimensional electrocatalysts that do not rely on noble-metals and are suitable for a wide pH range.

Keywords: three-dimensional N-RGO, iron phosphide, hydrogen evolution reaction, wide pH range, electrocatalysis

Suggested Citation

Wei, Shenqi and Xing, Pingxing and Luo, Hualan and Chen, Xinyi and Dai, Liyi and Wang, Yuanyuan, Three-Dimensional N-Doped Graphene Coated with B-Doped Iron Phosphide Electrocatalysts: Nonmetallic Element Co-Modification for Enhanced Dual-Ph Hydrogen Evolution Reaction. Available at SSRN: https://ssrn.com/abstract=4696340 or http://dx.doi.org/10.2139/ssrn.4696340

Shenqi Wei

affiliation not provided to SSRN ( email )

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Pingxing Xing

affiliation not provided to SSRN ( email )

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Hualan Luo

affiliation not provided to SSRN ( email )

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Xinyi Chen

affiliation not provided to SSRN ( email )

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Liyi Dai

affiliation not provided to SSRN ( email )

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Yuanyuan Wang (Contact Author)

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