Mass Production of LiFePO4/C Powders by Large Type Spray Pyrolysis Apparatus and Its Application to Cathode for Lithium Ion Battery
Spherical LiFePO4/C powders were successfully produced at a rate of 100 g/h using a large type spray pyrolysis apparatus. Organic compounds such as citric acid and sucrose were used as carbon sources. Scanning electron microscopy observation showed that they had a spherical morphology with nonaggreg...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | International Journal of Chemical Engineering |
| Online Access: | http://dx.doi.org/10.1155/2010/175914 |
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| author | Shinsuke Akao Motofumi Yamada Takayuki Kodera Takashi Ogihara |
| author_facet | Shinsuke Akao Motofumi Yamada Takayuki Kodera Takashi Ogihara |
| author_sort | Shinsuke Akao |
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| description | Spherical LiFePO4/C powders were successfully produced at a rate of 100 g/h using a large type spray pyrolysis apparatus. Organic compounds such as citric acid and sucrose were used as carbon sources. Scanning electron microscopy observation showed that they had a spherical morphology with nonaggregation. X-ray diffraction analysis revealed that the olivine phase was obtained by heating at 600∘C under argon (95%)/hydrogen (5%) atmosphere. The chemical composition of LiFePO4/C powders was in good agreement with that of the starting solution. Electrochemical measurement revealed that the use of citric acid was most effective in ensuring a high rechargeable capacity and cycle stability. The rechargeable capacity of the LiFePO4/C cathode obtained using citric acid was 155 mAh/g at a discharge rate of 1 C. Because of the good discharge capacity of the LiFePO4/C cathode, it exhibited excellent cycle stability after 100 cycles at each discharge rate. Moreover, this high cycle stability of the LiFePO4/C cathode was maintained even at 50∘C. |
| format | Article |
| id | doaj-art-6adeda1bb61c4f789c66093786a0d763 |
| institution | Kabale University |
| issn | 1687-806X 1687-8078 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
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| series | International Journal of Chemical Engineering |
| spelling | doaj-art-6adeda1bb61c4f789c66093786a0d7632025-02-03T05:49:32ZengWileyInternational Journal of Chemical Engineering1687-806X1687-80782010-01-01201010.1155/2010/175914175914Mass Production of LiFePO4/C Powders by Large Type Spray Pyrolysis Apparatus and Its Application to Cathode for Lithium Ion BatteryShinsuke Akao0Motofumi Yamada1Takayuki Kodera2Takashi Ogihara3Graduate School of Fiber Amenity Engineering, University of Fukui, 9-1 Bunkyo 3, Fukui-shi, Fukui 910-8507, JapanGraduate School of Fiber Amenity Engineering, University of Fukui, 9-1 Bunkyo 3, Fukui-shi, Fukui 910-8507, JapanGraduate School of Fiber Amenity Engineering, University of Fukui, 9-1 Bunkyo 3, Fukui-shi, Fukui 910-8507, JapanGraduate School of Fiber Amenity Engineering, University of Fukui, 9-1 Bunkyo 3, Fukui-shi, Fukui 910-8507, JapanSpherical LiFePO4/C powders were successfully produced at a rate of 100 g/h using a large type spray pyrolysis apparatus. Organic compounds such as citric acid and sucrose were used as carbon sources. Scanning electron microscopy observation showed that they had a spherical morphology with nonaggregation. X-ray diffraction analysis revealed that the olivine phase was obtained by heating at 600∘C under argon (95%)/hydrogen (5%) atmosphere. The chemical composition of LiFePO4/C powders was in good agreement with that of the starting solution. Electrochemical measurement revealed that the use of citric acid was most effective in ensuring a high rechargeable capacity and cycle stability. The rechargeable capacity of the LiFePO4/C cathode obtained using citric acid was 155 mAh/g at a discharge rate of 1 C. Because of the good discharge capacity of the LiFePO4/C cathode, it exhibited excellent cycle stability after 100 cycles at each discharge rate. Moreover, this high cycle stability of the LiFePO4/C cathode was maintained even at 50∘C.http://dx.doi.org/10.1155/2010/175914 |
| spellingShingle | Shinsuke Akao Motofumi Yamada Takayuki Kodera Takashi Ogihara Mass Production of LiFePO4/C Powders by Large Type Spray Pyrolysis Apparatus and Its Application to Cathode for Lithium Ion Battery International Journal of Chemical Engineering |
| title | Mass Production of LiFePO4/C Powders by Large Type Spray Pyrolysis Apparatus and Its Application to Cathode for Lithium Ion Battery |
| title_full | Mass Production of LiFePO4/C Powders by Large Type Spray Pyrolysis Apparatus and Its Application to Cathode for Lithium Ion Battery |
| title_fullStr | Mass Production of LiFePO4/C Powders by Large Type Spray Pyrolysis Apparatus and Its Application to Cathode for Lithium Ion Battery |
| title_full_unstemmed | Mass Production of LiFePO4/C Powders by Large Type Spray Pyrolysis Apparatus and Its Application to Cathode for Lithium Ion Battery |
| title_short | Mass Production of LiFePO4/C Powders by Large Type Spray Pyrolysis Apparatus and Its Application to Cathode for Lithium Ion Battery |
| title_sort | mass production of lifepo4 c powders by large type spray pyrolysis apparatus and its application to cathode for lithium ion battery |
| url | http://dx.doi.org/10.1155/2010/175914 |
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