A bifunctional air electrode catalyzed by lead ruthenate for Li-Air batteries

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1149/06919.0023ecst
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Name affiliation
  1. National Research Council Canada. Energy, Mining and Environment
  2. National Research Council Canada. Automotive and Surface Transportation
FormatText
TypeArticle
Journal titleECS Transactions
ISSN1938-6737
1938-5862
Volume69
Issue19
Pages23–32
Abstract
The performance of a catalyst enforced commercially available gas diffusion layer (GDL) electrode was evaluated at different discharge rates and depths in non-aqueous Li-O₂ batteries. The lead ruthenate (PbRuO) powder with a pyrochlore structure was employed as the catalyst. The lead ruthenate pyrochlore was prepared using a direct soft template method and characterized by X-ray diffraction (XRD), nitrogen physisorption techniques and transmission electron microscopy (TEM). The charge/discharge capabilities of the PbRuO/Ketjenblack (KB) composite were studied in tetraethyleneglycol dimethyl ether (TEGDME) containing 1M lithium triflate. The results show that PbRuO/KB can enhance the cell performance at high charge/discharge rates. Moreover, at a current density of 0.1mA/cm² it significantly increases the cell cyclability. With a cut-off capacity of 1000 mAh/g (PbRuO/KB only) the cell reached 100 cycles. As such, lead ruthenate has the potential to be used as an efficient bifunctional electrocatalyst for non-aqueous Li-O₂ batteries.
Publication date
PublisherThe Electrochemical Society
LanguageEnglish
Peer reviewedYes
NPARC number23000085
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Record identifier83558659-2e7a-43f4-a875-8b48e68afd9c
Record created2016-06-02
Record modified2016-06-02
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