Electrochemical Performances of Lithium-air Cell with Carbon Materials
- Electrochemical Performances of Lithium-air Cell with Carbon Materials
- 박창규; 박성빈; 이선영; 이현주; 장호; 조원일
- air electrode; carbon; electrochemical performance; morphology; Cathode requirements; Li-air battery
- Issue Date
- Bulletin of the Korean Chemical Society
- VOL 31, NO 11, 3221-3224
- This study investigates the requirements of lithium-air cathodes, which directly influence discharge capacity. The
cathodes of Li-air cell are made by using five different carbon materials, such as Ketjen black EC600JD, Super P,
Ketjen black EC300JD, Denka black, and Ensaco 250G. The Ketjen black EC600JD provides discharge capacity of
2600 mAh/g per carbon weight, while that of Ensaco 250G shows only 579 mAh/g. To figure out the differences of
discharge capacity from carbon materials, their surface area and pore volume are analyzed. These are found out to
be the critical factors in determining discharge capacity. Furthermore, carbon loading on Ni foam and amounts of
electrolyte are significant factors that affect discharge capacity. In order to investigate catalyst effect, electrolytic manganese
dioxide (EMD) is incorporated and delivered 4307 mAh/g per carbon weight. This infers that EMD facilitates
to break O₂interactions and leads to enhance discharge capacity.
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- KIST Publication > Article
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