| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5150412 | Solid State Ionics | 2017 | 6 Pages |
Abstract
LiFePO4/C (LFP/C) materials are synthesized by a hydrothermal method with ionic liquid 1-vinyl-3-ethylimidazolium bis(trifluoromethylsulfony)imide ([VEIm]NTf2) as carbon source. Carbon films of 5-10Â nm are successfully coated on the surface of LiFePO4 (LFP) particles and serve as the protective layers of LFP particles during cycling. The carbon materials also fill the gap between LFP particles, which creates electron transfer paths. Due to the integrated carbon materials, the LFP/C exhibits significantly improved reversibility, cycle stability, rate performance, and charge and discharge capacity. These results demonstrate a simple and scalable application of ionic liquid [VEIm]NTf2 as carbon source toward electrochemical energy storage.
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Authors
Jun Xia, Fuliang Zhu, Gongrui Wang, Lei Wang, Yanshuang Meng, Yue Zhang,