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A fuel cell catalyst support based on doped titanium suboxides with enhanced conductivity, durability and fuel cell performance

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Abstract

An entirely carbon-free multifunctional titanium suboxide doped with two metals has been developed as a novel fuel cell catalyst support. The co-functional Ti3O5Mo0.2Si0.4 (TOMS) support shows remarkably high electronic conductivity for a metal oxide. A Pt/TOMS catalyst was prepared and found to show excellent activity towards the oxygen reduction reaction (ORR). This enhanced activity is attributed to a strong electronic interaction between the Pt nanoparticles and the TOMS support. Furthermore, this Pt/TOMS catalyst shows extraordinary durability in accelerated stress tests, losing only 10% of its active surface area over the 5000 cycle accelerated stress test. The fuel cell performance testing of the Pt/TOMS catalyst shows that practical fuel cell devices can be readily fabricated and achieve high performance, exceeding those of commercial catalysts. Thus, the proposed Pt/TOMS has the potential to be a viable carbon-free support that could be deployed in PEMFC technology as a near-term solution.

Graphical abstract: A fuel cell catalyst support based on doped titanium suboxides with enhanced conductivity, durability and fuel cell performance

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Publication details

The article was received on 16 Mar 2018, accepted on 29 Jun 2018 and first published on 29 Jun 2018


Article type: Paper
DOI: 10.1039/C8TA02470G
Citation: J. Mater. Chem. A, 2018, Advance Article
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    A fuel cell catalyst support based on doped titanium suboxides with enhanced conductivity, durability and fuel cell performance

    R. Alipour Moghadam Esfahani, I. I. Ebralidze, S. Specchia and E. B. Easton, J. Mater. Chem. A, 2018, Advance Article , DOI: 10.1039/C8TA02470G

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