Electrochemical performance of highly mesoporous nitrogen doped carbon cathode in lithium–oxygen batteries
| Autor: | Stanley J. Rodrigues, Binod Kumar, Padmakar Kichambare, Jitendra Kumar |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Battery (electricity)
Materials science Renewable Energy Sustainability and the Environment Scanning electron microscope Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element Electrochemistry Cathode Dielectric spectroscopy law.invention chemistry law Electrode medicine Electrical and Electronic Engineering Physical and Theoretical Chemistry Carbon Activated carbon medicine.drug |
| Zdroj: | Journal of Power Sources. 196:3310-3316 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2010.11.112 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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