Oxalic dihydrazide assisted novel combustion synthesized Li3V2(PO4)3 and LiVP2O7 compounds for rechargeable lithium batteries
Kalidas, N., Nallathamby, K. and Minakshi, M. (2013) Oxalic dihydrazide assisted novel combustion synthesized Li3V2(PO4)3 and LiVP2O7 compounds for rechargeable lithium batteries. ECS transactions, 50 (24). pp. 79-88.
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A novel oxalic dihydrazide (ODH) has been identified as a fuel for solution combustion synthesis to prepare LixMy(PO 4)z compounds as a cathode material for lithium battery applications. These compounds have been synthesized at 850°C using a mixture of Ar:H2 (90:10) atmosphere, wherein oxalic dihydrazide acts both as a combustible fuel and a carbon source. This resulted in a higher carbon content weighing ca. 12 and 8% for poly (Li3V2(PO 4)3/C) and pyrophosphate (LiVP2O7/C) composites as opposed to the insitu added super P carbon was only 5 wt.%. The electrochemical behavior of these cathodes showed reversible intercalation and deintercalation of lithium ions while exhibiting specific capacities of 168 and 100 mAh/g with good capacity retention. The role of ODH assisted combustion synthesis (ODHAC) on the physical and electrochemical behavior of the title compounds has been demonstrated.
|Publication Type:||Journal Article|
|Publisher:||The Electrochemical Society|
|Copyright:||2013 The Electrochemical Society|
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