Palladium chalcogenide nanosheets with p-d orbital hybridization for enhanced 
alcohol electro-oxidation performance

Wang, Liping; Yu, Zhiyong; Yan, Wei; Liu, Liangbin; Wang, Mengjun; Kong, Qingyu; Hu, Zhiwei; Geng, Hongbo; Huang, Xiaoqing; Li, Yunhua

doi:10.1016/j.apcatb.2023.123564

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Palladium chalcogenide nanosheets with p-d orbital hybridization for enhanced alcohol electro-oxidation performance

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Hu, Zhiwei
Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Wang, L., Yu, Z., Yan, W., Liu, L., Wang, M., Kong, Q., et al. (2024). Palladium chalcogenide nanosheets with p-d orbital hybridization for enhanced alcohol electro-oxidation performance. Applied Catalysis B: Environmental, 343: 123564, pp. 1-9. doi:10.1016/j.apcatb.2023.123564.

Cite as: https://hdl.handle.net/21.11116/0000-000E-1F4C-C

Abstract

Ethanol oxidation reaction (EOR) is an important energy conversion process. Herein, we have proposed palladium chalcogenide nanosheets to improve C-C bond cleavage ability for EOR. The mass activity of the Te-Pd nanosheets (NSs)/C, which is higher than Se-Pd NSs/C and S-Pd NSs/C (6.9 A mg−1 and 5.3 A mg−1), has achieved 10.0 A mg−1, 12.5-fold higher than commercial Pd/C (0.8 A mg−1) and 8.3 times higher than Pd NSs/C (1.2 A mg−1). The Faradaic efficiency of C1 pathway for EOR on the Te-Pd NSs/C can improve to 56.6% compared with Pd NSs/C (25.7%) at 0.8 VRHE. Density functional theory calculations reveal that the orbital hybridization between Pd and Te weakens the adsorption energy of intermediates and reduces the energy barrier of the rate-determining steps in the C1 pathway. Besides, these palladium chalcogenide NSs can also serve as efficient electrocatalysts for ethylene glycol oxidation reaction and methanol oxidation reaction. © 2023 Elsevier B.V.