Electrochemical Performance of Highly Mesoporous Nitrogen Doped Carbon Cathode in Lithium-Oxygen Batteries (Postprint)
Journal article postprint
AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH POWER AND CONTROL DIV
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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.
- Electrochemical Energy Storage