期刊
JOURNAL OF POWER SOURCES
卷 196, 期 6, 页码 3310-3316出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2010.11.112
关键词
Nitrogen doped mesoporous carbon; Lithium-air; Electrochemical impedance spectroscopy; Discharge cell capacity; Solid-state lithium-oxygen battery
资金
- Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA
Nitrogen doped carbon with a high surface area was used as cathode electrode in a solid-state lithium-oxygen battery. Various techniques including the Brunauer-Emmett-Teller (BET) surface area, X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) were employed to evaluate the nitrogen functionality on carbon. The electrochemical properties of nitrogen doped carbon as cathode electrode in lithium-oxygen battery were studied using galvanostatic charge-discharge characteristics and electrochemical impedance spectroscopy (EIS). The lithium-oxygen cell fabricated with nitrogen doped Ketjenblack-Calgon activated carbon cathode exhibits two times higher discharge cell capacity than that of a cathode composed of only Ketjenblack-Calgon activated carbon. This work shows that the nitrogen functionality on carbon is responsible for the electro-catalytic activity of cathode and an enhancement in cell capacity of lithium-oxygen battery. Published by Elsevier B.V.
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