Abstract
Pt-based materials are generally recognized as promising electrocatalysts for use in Li-air batteries, but their high cost and scarcity present limiting factors for practical application. Therefore, catalyst costs need to be reduced by either replacing Pt with less expensive materials or by increasing the Pt dispersion. Herein, we report the fabrication of a Pt-Ru/Mn3O4/C composite as a relatively low cost and highly-efficient catalyst for use in Li-air battery cathodes. Mn3O4/C composites were first synthesized via simple precipitation methods. Pt-Ru nanoparticles were subsequently deposited onto the as-synthesized Mn3O4/C materials via impregnation-reduction methods. Results showed that Pt-Ru nanoparticles were uniformly dispersed onto the Mn3O4/C surface as made evident via transmission electron microscopy. The prepared Pt-Ru/Mn3O4/C catalyst was employed as an air-cathode material for Li-Air batteries, exhibiting not only high electrocatalytic performance but also an improved cyclability up to 130 cycles, compared to a physically-mixed catalyst composite.
Original language | English |
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Pages (from-to) | 10453-10458 |
Number of pages | 6 |
Journal | Journal of Nanoscience and Nanotechnology |
Volume | 16 |
Issue number | 10 |
DOIs | |
State | Published - Oct 2016 |
Bibliographical note
Publisher Copyright:Copyright © 2016 American Scientific Publishers All rights reserved.
Keywords
- Air electrode
- Composite catalyst
- Cycle performance
- Lithium-air battery