Effect of Various Lithium Salts in TEGDME Based Electrolyte for Li/Pyrite Battery |
|
| Journal | Solid State Phenomena (Volumes 124 - 126) |
|---|---|
| Volume | Advances in Nanomaterials and Processing |
| Edited by | Byung Tae Ahn, Hyeongtag Jeon, Bo Young Hur, Kibae Kim and Jong Wan Park |
| Pages | 971-974 |
| DOI | 10.4028/www.scientific.net/SSP.124-126.971 |
| Citation | Jae Won Choi et al., 2007, Solid State Phenomena, 124-126, 971 |
| Online since | June, 2007 |
| Authors | Jae Won Choi, Gouri Cheruvally, Yong Jo Shin, Hyo Jun Ahn, Ki Won Kim, Jou Hyeon Ahn |
| Keywords | FeS2, Li/FeS2, Pyrite, Secondary Batteries, TEGDME |
| Abstract | The effect of lithium salts such as LiPF6, LiBF4, LiCF3SO3 and LiN(CF3SO2)2 (LiTFSI) in tetra(ethylene glycol) dimethyl ether (TEGDME) electrolyte on the ionic conductivity, interfacial resistance and discharge properties of Li/pyrite cell at room temperature was studied. The electrolytes had good ionic conductivity at room temperature in the range 0.61 to 1.86 × 10-3 S/. The discharge capacities of Li/pyrite cells with 1M LiPF6 and LiBF4 in TEGDME were lower compared to those of the other two non-HF containing salts. The best cycle performance was exhibited by LiTFSI in TEGDME electrolyte, with a discharge capacity of 438 mAhg-1 after 20 cycles, which is ~49% of FeS2 theoretical capacity (894 mAhg-1). The good performance of LiTFSI-TEGDME electrolyte resulted mainly from its low interfacial resistance in Li/FeS2 cells, which showed a decreasing trend with cycling. |
| Full Paper | 
Get the full paper by clicking here
|
First page example
