Synthesis and Characterization of LiMXFe1-XPO4 (M = Cu, Sn; X = 0.02) Cathodes - A study on the Effect of Cation Substitution in LiFePO4 Material
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Synthesis and Characterization of LiMXFe1-XPO4 (M = Cu, Sn;
X = 0.02) Cathodes - A study on the Effect of Cation
Substitution in LiFePO4 Material
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| Creator |
Jayaprakash, N.
Kalaiselvi, N. Periasamy, P. |
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| Subject |
Lithium batteries
Electrochemical Power Sources |
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| Description |
An attempt has been made for the possible augmentation and exploration of partially substituted
LiFePO4 material as a positive electrode for lithium battery applications. In this regard, cationic
substitution of Cu and Sn (2%) to the native LiFePO4/C electro active material has been carried out
via. ball milling, with a view to understand the effect of respective transition and non-transition metals
upon LiFePO4 individually. Uniformly distributed particles (SEM) of LiMXFe1-XPO4/C (M= Cu, Sn)
with phase pure nature (XRD) and finer crystallite size (<1mm) were obtained. Further, it is interesting
to note that irrespective of the nature of the dopant metal, the simple route of ball milled LiMXFe1-
XPO4/C [M= Cu, Sn] cathodes endowed with improved conductivity and stable reversible capacity
values (chare-discharge). In other words, the LiCu0.02Fe0.98PO4/C cathode delivered a reversible
capacity of ~105 mAh/g with an excellent capacity retention characteristic. On the other hand
LiSn0.02Fe0.98PO4/C cathodes exhibited an average specific capacity of ~100mAh/g with progressively
enhanced efficiency values. Results of Fourier Transform Infra Red (FTIR) spectroscopy and Cyclic
Voltammetric studies of LiMXFe1-XPO4/C (M= Cu, Sn) composites are also appended and correlated
suitably.
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| Date |
2008
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/183/1/062-2008.pdf
Jayaprakash, N. and Kalaiselvi, N. and Periasamy, P. (2008) Synthesis and Characterization of LiMXFe1-XPO4 (M = Cu, Sn; X = 0.02) Cathodes - A study on the Effect of Cation Substitution in LiFePO4 Material. International Journal of Electrochemical Science, 3 (4). pp. 476-488. ISSN 1452-3981 |
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| Relation |
http://cecri.csircentral.net/183/
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