Cycle life limit of carbon-based electrodes for rechargeable metal
By S. Velraj and J.H. Zhu
Published in Journal of Electroanalytical Chemistry
NULL
2015
Abstract
In this paper, the electrochemical performance and cyclic lifetime of bifunctional electrodes in an alkaline electrolyte were investigated as a function of the perovskite catalyst (La0.6Ca0.4CoO3 or Sr0.5Sm0.5CoO3??) and the carbon (as-received or graphitized Vulcan XC-72 carbon black). The electrochemical performance of the electrodes was essentially the same, regardless of the carbon and the catalyst; however, the cycle life was directly controlled by the carbon. The graphitized Vulcan-based electrodes had more than twice the cycle life of the as-received Vulcan-based electrodes, due to the better corrosion resistance of the graphitized carbon. The cycle life of the carbon-based electrodes was limited to 100
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