Calcium doping effects on the electrochemical properties of LiFePO 4/C cathode materials for lithium-ion batteries

George Ting Kuo Fey, Cyun Jhe Yan, Yi Chuan Lin, Kai Pin Huang, Yung Da Cho, Pin Jiun Wu, Ya Sen Sun, Hsien Ming Kao

研究成果: 書貢獻/報告類型會議論文篇章同行評審

5 引文 斯高帕斯(Scopus)

摘要

This Olivine LiFe 1-xCa xPO 4/C composites (x=0 - 0.014) were synthesized by a solid-state method using sebasic acid as a carbon source. The structure and electrochemical properties of the LiFe 1-xCa xPO 4/C compounds were studied. The X-ray diffractometer (XRD) results indicated that Ca 2+ doping did not affect the structure of the samples, but the unit cell volume of doped sample are slightly increased. Electrochemical measurements showed that the LiFe 0.99Ca 0.01PO 4/C composite delivered a discharge capacity of 149 mAh g -1 at a 0.2 C-rate between 4.0 and 2.8 V, probably due to the significant improvement of electronic conductivity and Li + ion diffusion. Besides, the cell can sustain a 20 C-rate, and this rate capability is equivalent to charge or discharge in 3 min.

原文???core.languages.en_GB???
主出版物標題Material Sciences and Technology
頁面499-505
頁數7
DOIs
出版狀態已出版 - 2012
事件2012 Spring International Conference on Material Sciences and Technology, MST-S - Xi'an, China
持續時間: 27 5月 201230 5月 2012

出版系列

名字Advanced Materials Research
560-561
ISSN(列印)1022-6680

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???event.eventtypes.event.conference???2012 Spring International Conference on Material Sciences and Technology, MST-S
國家/地區China
城市Xi'an
期間27/05/1230/05/12

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