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Synergistic combination of Pd nanosheets and porous Bi(OH)3 boosts activity and durability for ethanol oxidation reaction

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Abstract

Highly active and durable Pd-based electrocatalysts for ethanol oxidation reaction (EOR) play a crucial role in the commercialization of direct ethanol fuel cells (DEFCs). However, the poisonous intermediates (especially adsorbed CO species (COad)) formed during the EOR process can easily adsorb and block the active sites on Pd electrodes, which in turn limits the catalytic efficiency. Hence, we present a series of Pd-based composites with a strong coupling interface consisting of Pd nanosheets and amorphous Bi(OH)3 species. The incorporation of Bi(OH)3 can induce an electron-rich state adjacent to the Pd sites and effectively separate the Pd ensemble, leading to excellent CO tolerance. The optimal Pd-Bi(OH)3 NSs catalyst manifests a mass activity of 2.2 A·mgPd−1, which is 5.7 and 2.0 times higher than that of Pd NSs and commercial Pd/C catalyst, respectively. Further CO-stripping experiments and CO-DRIFTS tests confirm the excellent CO tolerance on Pd-Bi(OH)3 NSs electrode, leading to the enhanced EOR durability.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 51922073 and 21902109), the Natural Science Foundation of Jiangsu Province (Nos. BK20200960 and BK20180097), the Natural Science Foundation of Higher Education in Jiangsu Province (No. 20KJB150041), and the Natural Science Foundation of Nantong University for High-Level Talent (No. 03083033). We also acknowledge the financial support from the 111 Project, Collaborative Innovation Center of Suzhou Nano Science, Technology (NANO-CIC) and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

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  1. Mingyu Chu, Jialu Huang, and Jin Gong contributed equally to this work.

Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, 226019, China

    Jialu Huang, Hu Yang & Xiaolei Yuan

  2. Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, No. 199 Ren’ai Road, Suzhou, 215123, China

    Mingyu Chu, Jin Gong, Xuchun Wang, Qixuan Zhong, Muhan Cao, Jinxing Chen, Xiaolei Yuan & Qiao Zhang

  3. Department of Chemistry, University of Western Ontario, London, Ontario, N6A5B7, Canada

    Xuchun Wang

  4. State Key Laboratory of Space Power-sources Technology, Shanghai Institute of Space Power-Sources, 2965 Dongchuan Road, Shanghai, 200245, China

    Yi Qu, Guoling Chen & Chengwei Deng

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  1. Mingyu Chu
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Correspondence to Chengwei Deng or Xiaolei Yuan.

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Synergistic combination of Pd nanosheets and porous Bi(OH)3 boosts activity and durability for ethanol oxidation reaction

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Chu, M., Huang, J., Gong, J. et al. Synergistic combination of Pd nanosheets and porous Bi(OH)3 boosts activity and durability for ethanol oxidation reaction. Nano Res. 15, 3920–3926 (2022). https://doi.org/10.1007/s12274-021-4049-9

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