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Electrochemical properties of sodium/pyrite battery at room temperature
- Authors
- Kim, T. B.; Choi, J. W.; Ryu, H. S.; Cho, G. B.; Kim, K. W.; Ahn, J. H.; Cho, K. K.; Ahn, H. J.
- Issue Date
- 6-Dec-2007
- Publisher
- ELSEVIER
- Keywords
- sodium battery; pyrite (natural FeS2 ore) cathode; room temperature
- Citation
- JOURNAL OF POWER SOURCES, v.174, no.2, pp 1275 - 1278
- Pages
- 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 174
- Number
- 2
- Start Page
- 1275
- End Page
- 1278
- ISSN
- 0378-7753
1873-2755
- Abstract
- We investigated sodium/pyrite battery because sodium and pyrite (natural FeS2 ore) were very cheap materials. The sodium/pyrite battery showed high discharge capacity of 630 mAh g(-1)-FeS2 with 50 mA g(-1)-FeS2 at room temperature, which was higher than that of Li ion battery and Na/synthetic FeS2 battery. First discharge curve had one plateau-shaped voltage region of 1.3 V, which disappeared and changed to sloping shape after second cycle. The discharge capacity decreased continuously by repeated charge-discharge cycling, and remained 85 mAh g(-1)-FeS2 after 50th cycles. (C) 2007 Elsevier B.V. All rights reserved.
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