Gold-Palladium nanoparticles supported by mesoporous [beta]-MnO2 air electrode for rechargeable Li-Air battery

Gold-Palladium nanoparticles supported by mesoporous [beta]-MnO2 air electrode for rechargeable Li-Air battery

The electrochemical performance and electrode reaction using Au-Pd nanoparticle (NP) supported mesoporous [beta]-MnO2 as a cathode catalyst for rechargeable Lithium-Air (Li-Air) battery is reported here for the first time. In this study, Au-Pd NP-supported mesoporous [beta]-MnO2 was successfully syn...

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Veröffentlicht in:Journal of power sources 2012-12, Vol.220, p.211-216
Hauptverfasser: Thapa, Arjun Kumar, Shin, Tae Ho, Ida, Shintaro, Sumanasekera, Gamini U, Sunkara, Mahendra K, Ishihara, Tatsumi
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Battery
Catalysts
Cathodes
Discharge
Electric batteries
Electrodes
Gold
Nanoparticles
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container_issue
container_start_page 211
container_title Journal of power sources
container_volume 220
creator Thapa, Arjun Kumar
Shin, Tae Ho
Ida, Shintaro
Sumanasekera, Gamini U
Sunkara, Mahendra K
Ishihara, Tatsumi
description The electrochemical performance and electrode reaction using Au-Pd nanoparticle (NP) supported mesoporous [beta]-MnO2 as a cathode catalyst for rechargeable Lithium-Air (Li-Air) battery is reported here for the first time. In this study, Au-Pd NP-supported mesoporous [beta]-MnO2 was successfully synthesized by hydrothermal process using a silica KIT-6 template. It has an initial discharge capacity of ca. 775 mAh g-1 with high reversible capacity at a current density of 0.13 mA cm-2. The Au-Pd NP-supported mesoporous [beta]-MnO2 cathode catalyst, which enhances the kinetic of oxygen reduction and evolution reactions (ORR/OERs), thereby improves energy and coulombic efficiency of the Li-Air cell. Raman spectroscopy and ex-situ XRD results of the Au-Pd NP-supported mesoporous [beta]-MnO2 air electrode suggest that the observed capacity comes from oxidation of Li+ to form Li2O2 during discharge to 2.0 V.
doi_str_mv 10.1016/j.jpowsour.2012.08.003
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subjects Battery
Catalysts
Cathodes
Discharge
Electric batteries
Electrodes
Gold
Nanoparticles
title Gold-Palladium nanoparticles supported by mesoporous [beta]-MnO2 air electrode for rechargeable Li-Air battery
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