Journal article

Publication year: 2015

Pages: 242-248

Journal: Energy Technology

Volume number: 3

Issue number: 3

ISSN: 2194-4288

DOI Link: https://doi.org/10.1002/ente.201402208

Publisher: Wiley-VCH Verlag

Abstract: 
Sodium-oxygen cells with NaO2 as discharge product show very low overvoltages during discharge and charge, and their energy efficiency can be higher than 90%. In this study the electrochemical behavior of three different free-standing gas diffusion layers (GDL) is discussed, with each prepared by using a straightforward process from commercial starting materials: A pure carbon nanotube (CNT) electrode, a CNT electrode mixed with carbon fibers (CF) and a CNT electrode mixed with carbon black (CB). A solvent-free method was applied to the fabrication of these electrodes, which may help to overcome limitations of common slurry-based processes. NaO2 formed as the sole discharge product for all electrodes tested. The pure CNT electrode performs best in terms of capacity (1530mAhg(-1), 4.2mAhcm(-2)) and cycle life (more than 140cycles), and the results are superior in comparison to previous studies.

Harvard Citation style: Bender, C., Bartuli, W., Schwab, M., Adelhelm, P. and Janek, J. (2015) Toward Better Sodium-Oxygen batteries: A Study on the Performance of Engineered Oxygen Electrodes based on Carbon Nanotubes, Energy Technology, 3(3), pp. 242-248. https://doi.org/10.1002/ente.201402208

APA Citation style: Bender, C., Bartuli, W., Schwab, M., Adelhelm, P., & Janek, J. (2015). Toward Better Sodium-Oxygen batteries: A Study on the Performance of Engineered Oxygen Electrodes based on Carbon Nanotubes. Energy Technology. 3(3), 242-248. https://doi.org/10.1002/ente.201402208