Ordered Mesoporous Carbon Electrodes for Li-O-2 Batteries
- Title
- Ordered Mesoporous Carbon Electrodes for Li-O-2 Batteries
- Author
- 윤종승
- Keywords
- Li-O-2 batteries; ordered mesoporous carbon; Li2O2; air electrode
- Issue Date
- 2013-12
- Publisher
- AMER CHEMICAL SOC
- Citation
- ACS APPLIED MATERIALS & INTERFACES; DEC 25 2013, 5, 24, p13426-p13431
- Abstract
- Ordered mesoporous carbon (OMC) with highly ordered pore channels was applied as an oxygen-side electrode for a Li-O-2 battery. To evaluate the effect of the pore channel size on battery performance, we employed OMCs possessing two different pore sizes (6 and 17 nm). When cycled at a current density of 200 mA g(carbon)(-1), the OMC electrodes reduced polarization in the oxygen evolution reaction by 0.1 V compared to those consisting of conventional super P carbon electrode. X-ray diffraction and transmission electron microscopy of the discharged oxygen electrodes provided evidence for the formation of amorphous Li2O2, a product of the oxygen reduction reaction, inside the OMC pores rather than on the electrode surface as in the case of the super P electrode. The OMC electrodes were also effective at high current densities (500 mA g(carbon)(-1) and 1000 mA g(carbon)(-1)).
- URI
- http://hdl.handle.net/20.500.11754/46341https://pubs.acs.org/doi/10.1021/am404336f
- ISSN
- 1944-8244
- DOI
- 10.1021/am404336f
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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