ISSN 1608-4039 (Print)
ISSN 1680-9505 (Online)

For citation:

Osintsev D. I., Devyatkina E. T., Uvarov N. F., Kosova N. V. Lithium titanophosphate as cathode, anode and electrolyte for lithium batteries. Electrochemical Energetics, 2005, vol. 5, iss. 2, pp. 139-?.

This is an open access article distributed under the terms of Creative Commons Attribution 4.0 International License (CC-BY 4.0).
Language: 
Russian
Article type: 
Article

Lithium titanophosphate as cathode, anode and electrolyte for lithium batteries

Autors: 
Osintsev D. I., Institute of Chemistry of a Solid body and Mechanochemistry of the Siberian Branch of RAS
Devyatkina E. T., Institute of Chemistry of a Solid body and Mechanochemistry of the Siberian Branch of RAS
Uvarov Nikolai F., Institute of Chemistry of a Solid body and Mechanochemistry of the Siberian Branch of RAS
Kosova N. V., Institute of Chemistry of a Solid body and Mechanochemistry of the Siberian Branch of RAS
Abstract: 

The electrochemical properties and ionic conductivity of the LiTi2(PO4)33 (S.g. R-3c) synthesized via mechanical activation (MA) route have been investigated. It was shown that MA decreases temperature and time of synthesis facilitating preparation of more homogeneous final compound. The cycling studies were carried out with electrochemical cell LiTi2(PO4)3 (С) / LiPF6 + EC + DMC / Li in galvanostatic regime. It was shown that practical electrochemical capacity of the compounds prepared using MA is about 20% higher than for ceramic ones in the 2.0-3.5 V range. It was found that LiTi2(PO4)3, NaTi2(PO4)3 and КТi2(PO4)3 are able to cycle reversibly in the 0.2-1.5 V range, possibly due to irreversible chemical changes of the electrode materials with participation of P04-groups. It was shown that the conductivity of LiTi2(PO4)3 and Li1.3Al0.3Ti1.7(PO4)3 obtained via MA is 2-3 orders of magnitude higher than for ceramic compounds due to reduction of grain boundary resistance.