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Title: Atomically deviated Pd-Te nanoplates boost methanol-tolerant fuel cells
Authors: Zhang, Y
Huang, BL 
Luo, G
Sun, T
Feng, YG
Wang, YC
Ma, YH
Shao, Q
Li, YF
Zhou, ZY
Huang, XQ
Issue Date: 29-Jul-2020
Source: Science advances, 29 July 2020, v. 6, no. 31, eaba9731, p. 1-9
Abstract: The methanol crossover effect in direct methanol fuel cells (DMFCs) can severely reduce cathodic oxygen reduction reaction (ORR) performance and fuel efficiency. As a result, developing efficient catalysts with simultaneously high ORR activity and excellent antipoisoning methanol capability remains challenging. Here, we report a class of Pd-Te hexagonal nanoplates (HPs) with a Pd20Te7 phase that simultaneously overcome the activity and methanol-tolerant issues in alkaline DMFC. Because of the specific arrangement of Pd atoms deviated from typical hexagonal close-packing, Pd-Te HPs/C displays extraordinary methanol tolerance with high ORR performance compared with commercial Pt/C. DFT calculations reveal that the high performance of Pd-Te HPs can be attributed to the breakthrough of the linear relationship between OOH* and OH* adsorption, which leaves sufficient room to improve the ORR activity but suppresses the methanol oxidation reaction. The concurrent high ORR activity and excellent methanol tolerance endow Pd-Te HPs as practical electrocatalysts for DMFC and beyond.
Publisher: American Association for the Advancement of Science (AAAS)
Journal: Science advances 
ISSN: 2375-2548
DOI: 10.1126/sciadv.aba9731
Rights: Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC)(https://creativecommons.org/licenses/by-nc/4.0/).
This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/), which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
The following publication Zhang, Y., Huang, B. L., Luo, G., Sun, T., Feng, Y. G., Wang, Y. C., . . . Huang, X. Q. (2020). Atomically deviated Pd-Te nanoplates boost methanol-tolerant fuel cells. Science Advances, 6(31), 1-9 is available at https://dx.doi.org/10.1126/sciadv.aba9731
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