Effects of CeO<sub>2</sub> pre-calcined at different temperatures on the performance of Pt/CeO<sub>2</sub>–C electrocatalyst for methanol oxidation reaction

Guo-qing Li; Pu-kang Wen; Chen-qiang Gao; Tian-yi Zhang; Jun-yang Hu; Yu-hao Zhang; Shi-you Guan; Qing-feng Li; Bing Li

doi:10.1007/s12613-020-2076-2

Volume 28 Issue 7

Jul. 2021

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2021 > 28(7): 1224-1232

Guo-qing Li, Pu-kang Wen, Chen-qiang Gao, Tian-yi Zhang, Jun-yang Hu, Yu-hao Zhang, Shi-you Guan, Qing-feng Li, and Bing Li, Effects of CeO₂ pre-calcined at different temperatures on the performance of Pt/CeO₂–C electrocatalyst for methanol oxidation reaction, Int. J. Miner. Metall. Mater., 28(2021), No. 7, pp. 1224-1232. https://doi.org/10.1007/s12613-020-2076-2

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Guo-qing Li, Pu-kang Wen, Chen-qiang Gao, Tian-yi Zhang, Jun-yang Hu, Yu-hao Zhang, Shi-you Guan, Qing-feng Li, and Bing Li, Effects of CeO2 pre-calcined at different temperatures on the performance of Pt/CeO2–C electrocatalyst for methanol oxidation reaction, Int. J. Miner. Metall. Mater., 28(2021), No. 7, pp. 1224-1232. https://doi.org/10.1007/s12613-020-2076-2

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Research Article

Effects of CeO₂ pre-calcined at different temperatures on the performance of Pt/CeO₂–C electrocatalyst for methanol oxidation reaction

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Corresponding authors:
Shi-you Guan E-mail: syguan@shu.edu.cn

Bing Li E-mail: bingli@ecust.edu.cn
Received: 25 March 2020; Revised: 19 April 2020; Accepted: 21 April 2020; Available online: 24 April 2020

Abstract

Abstract

Pt/CeO₂–C catalysts with CeO₂ pre-calcined at 300–600°C were synthesized by combining hydrothermal calcination and wet impregnation. The effects of the pre-calcined CeO₂ on the performance of Pt/CeO₂–C catalysts in methanol oxidation were investigated. The Pt/CeO₂–C catalysts with pre-calcined CeO₂ at 300–600°C showed an average particle size of 2.6–2.9 nm and exhibited better methanol electro-oxidation catalytic activity than the commercial Pt/C catalyst. In specific, the Pt/CeO₂–C catalysts with pre-calcined CeO₂ at 400°C displayed the highest electrochemical surface area value of 68.14 m²·g⁻¹ and I_f/I_b ratio (the ratio of the forward scanning peak current density (I_f) and the backward scanning peak current density (I_b)) of 1.26, which are considerably larger than those (53.23 m²·g⁻¹ and 0.79, respectively) of the commercial Pt/C catalyst, implying greatly enhanced CO tolerance.
- direct methanol fuel cell;
- platinum/cerium dioxide–carbon;
- electrocatalyst;
- methanol oxidation

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