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Electrochemical Performances of Lithium-air Cell with Carbon Materials

Authors
Park, C. K.Park, S. B.Lee, S. Y.Lee, H.Jang, H.Cho, W. I.
Issue Date
20-11월-2010
Publisher
KOREAN CHEMICAL SOC
Keywords
Li-air battery; Air electrode; Cathode requirements
Citation
BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.31, no.11, pp.3221 - 3224
Indexed
SCIE
SCOPUS
KCI
Journal Title
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Volume
31
Number
11
Start Page
3221
End Page
3224
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/115312
DOI
10.5012/bkcs.2010.31.11.3221
ISSN
0253-2964
Abstract
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 2500 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 O(2) interactions and leads to enhance discharge capacity
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