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

doi:10.4028/www.scientific.net/AMR.560-561.499

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

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

5 Scopus citations

Abstract

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.

Original language	English
Title of host publication	Material Sciences and Technology
Pages	499-505
Number of pages	7
DOIs	https://doi.org/10.4028/www.scientific.net/AMR.560-561.499
State	Published - 2012
Event	2012 Spring International Conference on Material Sciences and Technology, MST-S - Xi'an, China Duration: 27 May 2012 → 30 May 2012

Publication series

Name	Advanced Materials Research
Volume	560-561
ISSN (Print)	1022-6680

Conference

Conference	2012 Spring International Conference on Material Sciences and Technology, MST-S
Country/Territory	China
City	Xi'an
Period	27/05/12 → 30/05/12

Keywords

Calcium doping
Carbon composite
Li-ion batteries

Access to Document

10.4028/www.scientific.net/AMR.560-561.499

Cite this

Fey, G. T. K., Yan, C. J., Lin, Y. C., Huang, K. P., Cho, Y. D., Wu, P. J., Sun, Y. S., & Kao, H. M. (2012). Calcium doping effects on the electrochemical properties of LiFePO ₄/C cathode materials for lithium-ion batteries. In Material Sciences and Technology (pp. 499-505). (Advanced Materials Research; Vol. 560-561). https://doi.org/10.4028/www.scientific.net/AMR.560-561.499

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

abstract = "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.",

keywords = "Calcium doping, Carbon composite, Li-ion batteries",

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

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Fey, GTK, Yan, CJ, Lin, YC, Huang, KP, Cho, YD, Wu, PJ, Sun, YS & Kao, HM 2012, Calcium doping effects on the electrochemical properties of LiFePO ₄/C cathode materials for lithium-ion batteries. in Material Sciences and Technology. Advanced Materials Research, vol. 560-561, pp. 499-505, 2012 Spring International Conference on Material Sciences and Technology, MST-S, Xi'an, China, 27/05/12. https://doi.org/10.4028/www.scientific.net/AMR.560-561.499

Calcium doping effects on the electrochemical properties of LiFePO ₄/C cathode materials for lithium-ion batteries. / Fey, George Ting Kuo; Yan, Cyun Jhe; Lin, Yi Chuan et al.
Material Sciences and Technology. 2012. p. 499-505 (Advanced Materials Research; Vol. 560-561).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Cho, Yung Da

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AU - Kao, Hsien Ming

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AB - 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.

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