Ordered Mesoporous Carbon Electrodes for Li-O-2 Batteries
SCIE
SCOPUS
- Title
- Ordered Mesoporous Carbon Electrodes for Li-O-2 Batteries
- Authors
- Park, JB; Lee, J; Yoon, CS; Sun, YK
- Date Issued
- 2013-12-25
- Publisher
- AMER CHEMICAL SOC
- 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
- https://oasis.postech.ac.kr/handle/2014.oak/27341
- DOI
- 10.1021/AM404336F
- ISSN
- 1944-8244
- Article Type
- Article
- Citation
- ACS APPLIED MATERIALS & INTERFACES, vol. 5, no. 24, page. 13426 - 13431, 2013-12-25
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