Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1290749 | Journal of Power Sources | 2008 | 6 Pages |
Abstract
LiFePO4/carbon composite electrode was prepared and applied to the dry polymer electrolyte. Enhanced low-temperature performance of LiFePO4 was achieved by modifying the interface between LiFePO4 and polymer electrolyte. The molecular weight of the polymer and the salt concentration as the Li/O ratio were optimized at 3 × 105 and 1/10, respectively. Impedance analysis revealed that a small resistive component occurred in the frequency range of the charge transfer process. The reversible capacity of the laminate cell was 140 mAh g−1 (C/20) and 110 mAh g−1 (C/2) at 40 °C, which is comparable to the performance in the liquid electrolyte system.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
K. Hanai, T. Maruyama, N. Imanishi, A. Hirano, Y. Takeda, O. Yamamoto,