dc.contributor.author | Xu, K | |
dc.contributor.author | Loh, A | |
dc.contributor.author | Wang, B | |
dc.contributor.author | Li, X | |
dc.date.accessioned | 2018-03-22T13:46:29Z | |
dc.date.issued | 2018-03-21 | |
dc.description.abstract | To develop a long-lifetime metal-air battery, oxygen reduction electrodes with improved mass-transfer routes are designed by adjusting the mass ratio of the hydrophobic polytetrafluoroethylene (PTFE) to carbon nanotubes (CNTs) in nickel foam. The oxygen reduction catalyst MnO2 is grown on the nickel foam using a hydrothermal method. Scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and Brunauer–Emmett–Teller analysis are employed to characterize the morphology, crystal structure, chemical composition, and pore structure of the electrodes, respectively. The air electrodes are evaluated using constant-current tests and electrochemical impedance spectroscopy. A PTFE:CNT mass ratio of 1:4–2:1 with 3-mm-thick nickel foam yields the optimal performance due to the balance of hydrophilicity and hydrophobicity. When the electrodes are applied in primary zinc–air batteries, the electrode with a PTFE:CNT mass ratio of 1:4 achieves the maximum power density of 95.7 mW cm−2 with a discharge voltage of 0.8 V at 100 mA cm−2, and completes stable discharge for over 14400 s at 20 mA cm−2. | en_GB |
dc.description.sponsorship | The authors gratefully acknowledge the financial support provided by the National Natural Science Foundation of China (21276134, 21776154) and the National 863 Project (2012AA051203). | en_GB |
dc.identifier.citation | Vol. 165 (5), pp. A809 - A818 | en_GB |
dc.identifier.doi | 10.1149/2.0361805jes | |
dc.identifier.uri | http://hdl.handle.net/10871/32198 | |
dc.language.iso | en | en_GB |
dc.publisher | Electrochemical Society | en_GB |
dc.rights | © The Author(s) 2018. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited. | en_GB |
dc.subject | Batteries and Energy Storage | en_GB |
dc.title | Enhancement of Oxygen Transfer by Design Nickel Foam Electrode for Zinc−Air Battery | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2018-03-22T13:46:29Z | |
dc.identifier.issn | 0013-4651 | |
dc.description | This is the final version of the article. Available from Electrochemical Society via the DOI in this record. | en_GB |
dc.identifier.journal | Journal of The Electrochemical Society | en_GB |