DFT Study of the ORR Catalytic Activity of As-Doped and As-N Co-Doped Graphene Substrates.

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Tác giả: Tingting Chen, Jinmin Guo, Bingling He, Xiao-Chun Li, Qingling Meng, Weiwei Shao, Wei Song, Jinlong Wang, Hongfeng Yan, Xiaoliang Zhang

Ngôn ngữ: eng

Ký hiệu phân loại: 296.1138 Sources

Thông tin xuất bản: Germany : Chemphyschem : a European journal of chemical physics and physical chemistry , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 163717

This study employs first-principles methods to investigate the ORR catalytic activity of As-doped and AsN co-doped graphene. As atoms, as catalytic active sites, exhibit excellent catalytic activity. Due to the strong interaction between As and N, the stability of the As-N co-doped substrate is enhanced. In particular, As-N4 co-doped graphene not only demonstrates the best thermodynamic and kinetic stability, but also has an ORR overpotential of only 0.53 V. We also propose a method to predict the Gibbs free energy change of the system by calculating the adsorption energies of the adsorbates. This approach can streamline the process by eliminating the need to calculate the Gibbs free energy of the ORR system, making it highly advantageous for future studies on the ORR catalytic activity of multi-impurity co-doped graphene.
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