| Autor: |
Chaturvedi, Apoorva, Morris, Samuel Alexander, Hu, Peng, Long, Yi, Kloc, Christian, Duchamp, Martial, Madhavi, Srinivasan, Aravindan, Vanchiappan |
| Zdroj: |
Materials Today Energy; September 2018, Vol. 9 Issue: 1 p19-26, 8p |
| Abstrakt: |
We report the synthesis and Li-storage properties of two-dimensional Co0.33In2.67S2.29Se1.71as an anode for Li-ion battery applications. Chemical vapour transport technique is adopted to prepare high quality Co0.33In2.67S2.29Se1.71single crystals with high yield. Li-storage properties are assessed using a half-cell configuration in which the cell is cycled in the alloying region (0.005–1 V vs.Li) that provides better characteristics than the extended region (i.e.allowing the materials to undergo a conversion pathway) in terms of cycling stability and retention. This logically think us to evaluate the suitability of the prepared negative electrode to fabricate the practical cell i.e.full-cell with olivine phase LiFePO4cathode. The irreversible capacity loss observed in the negative electrode is effectively tackled by using an electrochemical pre-treatment with Li and subsequently assembled the full-cell by adjusting the loading of LiFePO4. The practical-cell, LiFePO4/pre-treated Co0.33In2.67S2.29Se1.71displayed a very decent electrochemical activity and exhibits a maximum energy density of ∼103 Wh kg−1(including dead mass weight). |
| Databáze: |
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