Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7740548 | Journal of Power Sources | 2013 | 6 Pages |
Abstract
In this study, we propose a new filler material (Zn4O(1,4-benzenedicarboxylate)3 metal-organic framework, MOF-5), which is successfully prepared and incorporated in poly(ethylene oxide) (PEO) based composite polymer electrolyte (CPE) by an in-situ method for improving electrochemical properties in lithium ion battery. A highest ionic conductivity of 3.16 Ã 10â5 S cmâ1 at 25 °C for the composition of PEO-LiN(SO2CF3)2 (ethylene oxide (EO):Li = 10:1)/10 wt% MOF-5 is obtained. The anodic steady window of the electrolyte is 4.57 V at 60 °C, which is decided by the decomposition voltage of MOF-5. The interfacial resistances of Li/CPE/Li cells become more stable upon storage compared for that without MOF-5. The reversible capacities of LiFePO4/Li solid cells increase at both 60 °C and 80 °C due to the decrease of the cell polarization. In addition, the capacity retention is 45% after 100 cycles at 1 C rate at 80 °C, while there is a sharp decay after 30 cycles in the cells without MOF-5 filling. These results show that MOF-5 is useful to enhance electrochemical properties of composite polymer electrolyte for solid lithium ion battery.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Changfu Yuan, Jie Li, Pengfei Han, Yanqing Lai, Zhian Zhang, Jin Liu,