Silver-perovskite hybrid electrocatalysts for oxygen reduction reaction in alkaline media
Article
Article Title | Silver-perovskite hybrid electrocatalysts for oxygen reduction reaction in alkaline media |
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ERA Journal ID | 1476 |
Article Category | Article |
Authors | Wang, Xixi (Author), Ge, Lei (Author), Zhu, Yinlong (Author), Dai, Jie (Author), Zhou, Wei (Author) and Shao, Zongping (Author) |
Journal Title | Journal of the Electrochemical Society |
Journal of Electrochemical Society | |
Journal Citation | 165 (9), pp. H524-H529 |
Number of Pages | 6 |
Year | 2018 |
Place of Publication | United States |
ISSN | 0013-4651 |
1945-7111 | |
Digital Object Identifier (DOI) | https://doi.org/10.1149/2.1131809jes |
Web Address (URL) | http://jes.ecsdl.org/content/165/9/H524 |
Abstract | Developing a low-cost, and highly-efficient catalysts for improving oxygen reduction reaction (ORR) is imperative to the energy storage and conversion device. Here, we synthesized Ag/La0.6Sr0.4CoO3-delta, (Ag/LSC) composites by decorating LSC with Ag using the electroless technique. As a result, the LSC was homogenously overlaid with Ag nanoparticles. The derived Ag/LSC composites possessed a relatively higher specific surface area than pure LSC and Ag. The Co-O-Ag bonds in the composites contribute substantial electrons transferred from Ag to Co element, resulting in the unique electronic structures and strong electronic interaction between Ag and LSC. The significant improvements of ORR activity in alkaline solution at room temperature can be observed in Ag/LSC composites compared to the pure Ag and LSC. The composites with optimal Ag loading (50 wt%) showed best ORR activity among all the composites according to the half-wave potential and diffusion limiting current density. The presented strategy of silver surface modification via electroless process can provide effective routes for designing high performance metal oxide (e.g. perovskite) composite electrocatalysts. (C) 2018 The Electrochemical Society. |
Keywords | carbon nanotube arrays; lithium-air batteries; evolution reactions; fuel-cells; bifunctional catalysts; oxide catalysts; glassy-carbon; nanoparticles; graphene; performance |
ANZSRC Field of Research 2020 | 340399. Macromolecular and materials chemistry not elsewhere classified |
401601. Ceramics | |
400408. Reaction engineering (excl. nuclear reactions) | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Nanjing Tech University, China |
Centre for Future Materials | |
Nanjing University of Technology, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4xv6/silver-perovskite-hybrid-electrocatalysts-for-oxygen-reduction-reaction-in-alkaline-media
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