Xue Y, Pan D, Zuo F, Xiao S, Li X, Lou F, Li M, Ouyang Y. Improved performance of self-reactivated Pt-ThO
2/C catalysts in a direct ethanol fuel cell.
RSC Adv 2022;
12:17012-17019. [PMID:
35755591 PMCID:
PMC9172110 DOI:
10.1039/d2ra02398a]
[Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 06/01/2022] [Indexed: 12/02/2022] Open
Abstract
A novel self-reactivated catalyst Pt–ThO2/C was prepared for the first time by selecting radioactive material ThO2 as the catalytic additive to address the low activity and toxicity of the anode Pt/C catalyst in a direct ethanol fuel cell. The catalytic activity and resistance to CO poisoning of Pt-6.67 wt%ThO2/C were found to be superior to those of Pt/C–NaBH4 in electrochemical workstation and single-cell tests. It is speculated that the exist of ThO2 not only improves the catalytic activity via the synergistic effect of Pt and Th, but also produces a large amount of radiolysis products, OH radicals, due to 232Th which oxidatively desorbs CO from Pt–COads and solves the CO poisoning problem.
Self-reactivation of Pt–ThO2/C achieved by introducing radioactive material ThO2 improves the performance of the original Pt/C catalyst.![]()
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