Ballmilling-assisted synthesis and electrochemical performance of LiFePO<inf>4</inf>/C for lithium-ion battery adopting citric acid as carbon precursor
LiFePO4/C composite cathode for secondary lithium-ion battery was synthesized via a mechanochemical activation/sintering process adopting citric acid (CA) as carbon source. The carbon formation process, optimal carbon content, and electrochemical performance of the as-synthesized powders are investi...
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The Electrochemical Society, Inc
2009
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| Online Access: | http://hdl.handle.net/20.500.11937/8030 |
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curtin-20.500.11937-8030 |
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eprints |
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curtin-20.500.11937-80302017-09-13T14:37:00Z Ballmilling-assisted synthesis and electrochemical performance of LiFePO<inf>4</inf>/C for lithium-ion battery adopting citric acid as carbon precursor Zhang, D. Yu, X. Wang, Y. Cai, R. Shao, Zongping Liao, X. Ma, Z. LiFePO4/C composite cathode for secondary lithium-ion battery was synthesized via a mechanochemical activation/sintering process adopting citric acid (CA) as carbon source. The carbon formation process, optimal carbon content, and electrochemical performance of the as-synthesized powders are investigated by thermogravimetry-differential scanning calorimetric analyzer, X-ray powder diffraction, CO2 -temperature-programmed desorption (TPD), temperature-programmed reaction, scanning electron microscopy, impedance spectroscopy, and charge-discharge characterizations. The thermal decomposition of CA was found to conduct in two successive steps: It is first cracked to CHx between 50 and 400°C and then further decomposed to carbon at YYY; both temperatures are lower than that of the sucrose. CO2 -TPD characterization demonstrated that 5.0, 6.0, 6.75, and 8.0 wt % of CA applied during the synthesis resulted in carbon contents of 1.81, 3.23, 3.63, and 4.04 wt % in the final product, respectively. The cathode with its precursor containing 6.0 wt % CA shows highest discharge capacities of ~153 and 92 mA h g-1 at 1C and 20C rates, respectively, which are comparable to the best results reported for a LiFePO4/C cathode. It then highly appreciates the mechanochemical activation/sintering process with CA as the carbon source in the synthesis of high performance LiFePO4 /C. © 2009 The Electrochemical Society. 2009 Journal Article http://hdl.handle.net/20.500.11937/8030 10.1149/1.3183880 The Electrochemical Society, Inc restricted |
| repository_type |
Digital Repository |
| institution_category |
Local University |
| institution |
Curtin University Malaysia |
| building |
Curtin Institutional Repository |
| collection |
Online Access |
| description |
LiFePO4/C composite cathode for secondary lithium-ion battery was synthesized via a mechanochemical activation/sintering process adopting citric acid (CA) as carbon source. The carbon formation process, optimal carbon content, and electrochemical performance of the as-synthesized powders are investigated by thermogravimetry-differential scanning calorimetric analyzer, X-ray powder diffraction, CO2 -temperature-programmed desorption (TPD), temperature-programmed reaction, scanning electron microscopy, impedance spectroscopy, and charge-discharge characterizations. The thermal decomposition of CA was found to conduct in two successive steps: It is first cracked to CHx between 50 and 400°C and then further decomposed to carbon at YYY; both temperatures are lower than that of the sucrose. CO2 -TPD characterization demonstrated that 5.0, 6.0, 6.75, and 8.0 wt % of CA applied during the synthesis resulted in carbon contents of 1.81, 3.23, 3.63, and 4.04 wt % in the final product, respectively. The cathode with its precursor containing 6.0 wt % CA shows highest discharge capacities of ~153 and 92 mA h g-1 at 1C and 20C rates, respectively, which are comparable to the best results reported for a LiFePO4/C cathode. It then highly appreciates the mechanochemical activation/sintering process with CA as the carbon source in the synthesis of high performance LiFePO4 /C. © 2009 The Electrochemical Society. |
| format |
Journal Article |
| author |
Zhang, D. Yu, X. Wang, Y. Cai, R. Shao, Zongping Liao, X. Ma, Z. |
| spellingShingle |
Zhang, D. Yu, X. Wang, Y. Cai, R. Shao, Zongping Liao, X. Ma, Z. Ballmilling-assisted synthesis and electrochemical performance of LiFePO<inf>4</inf>/C for lithium-ion battery adopting citric acid as carbon precursor |
| author_facet |
Zhang, D. Yu, X. Wang, Y. Cai, R. Shao, Zongping Liao, X. Ma, Z. |
| author_sort |
Zhang, D. |
| title |
Ballmilling-assisted synthesis and electrochemical performance of LiFePO<inf>4</inf>/C for lithium-ion battery adopting citric acid as carbon precursor |
| title_short |
Ballmilling-assisted synthesis and electrochemical performance of LiFePO<inf>4</inf>/C for lithium-ion battery adopting citric acid as carbon precursor |
| title_full |
Ballmilling-assisted synthesis and electrochemical performance of LiFePO<inf>4</inf>/C for lithium-ion battery adopting citric acid as carbon precursor |
| title_fullStr |
Ballmilling-assisted synthesis and electrochemical performance of LiFePO<inf>4</inf>/C for lithium-ion battery adopting citric acid as carbon precursor |
| title_full_unstemmed |
Ballmilling-assisted synthesis and electrochemical performance of LiFePO<inf>4</inf>/C for lithium-ion battery adopting citric acid as carbon precursor |
| title_sort |
ballmilling-assisted synthesis and electrochemical performance of lifepo<inf>4</inf>/c for lithium-ion battery adopting citric acid as carbon precursor |
| publisher |
The Electrochemical Society, Inc |
| publishDate |
2009 |
| url |
http://hdl.handle.net/20.500.11937/8030 |
| first_indexed |
2018-09-06T18:22:30Z |
| last_indexed |
2018-09-06T18:22:30Z |
| _version_ |
1610883426622111744 |