Li, Y, Yan, Y, Yao, M-S et al. (5 more authors) (2023) Porous electrodes from self-assembled 3D jointed Pd polyhedra for direct formic acid fuel cells. Chemical Engineering Journal, 462. 142244. ISSN 1385-8947
Abstract
The direct formic acid fuel cell (DFAFC) is recognized as a promising power source for its high electromotive force, easy fuel storage and transport. However, its power performance is low and the cost is high, which are known to originate from the sluggish formic acid oxidation (FAO) kinetics and poor mass transport within the DFAFC anode. Here, we present a new DFAFC anode design with a thin, porous, 3D-structured catalyst layer based on self-assembled jointed Pd polyhedra in-situ grown on the gas diffusion layer surface. The Pd polyhedra provide highly active jointed interfaces and high-index facets, boosting their catalytic activity towards FAO. The porous 3D catalyst layer facilitates the transport of reactants and products at the large current density region. Consequently, the present anode design exhibits a previously unachieved power density of 202 mW cm−2 at a Pd loading of 1.0 mg cm−2 in the HCOOH/air DFAFC test.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 The Author(s). This is an open access article under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. |
Keywords: | Palladium; Polyhedron; Formic acid oxidation; Gas diffusion electrode; Direct formic acid fuel cell (DFAFC) |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 13 Mar 2023 08:30 |
Last Modified: | 15 Mar 2023 12:58 |
Published Version: | http://dx.doi.org/10.1016/j.cej.2023.142244 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.cej.2023.142244 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:197106 |