| Autor: |
Lidie, Ashley, Latorre, Paula C., Wachsman, Eric D., Atwater, Terrill B |
| Zdroj: |
ECS Transactions; October 2017, Vol. 80 Issue: 10 p305-316, 12p |
| Abstrakt: |
Lithium manganese oxide spinel is an attractive material for lithium-ion battery cathodes due to its 3D network of lithium pathways within the structure. However this material suffers from limited cyclability as a result of the energy barriers for removing lithium from the octahedral sites and capacity fading as a result of manganese dissociation. This work incorporates chlorine into the lattice of the high surface area material to help assist in lithium deinsertion and can be synthesized for use in less than 8 hours by using the common ceramic synthesis technique of glycine nitrate combustion. The resulting electrochemical cells cycle between 4.5 V and 3.5 V at 1.0 mA cm-2 (10 mA gactive-1) and achieve over 250 cycles while maintaining a capacity of 71 mAh/g, about 98% of the its original capacity. Additionally when cycled to 2.25 V the electrochemical cell is completely reversible and delivered a capacity of 150 mAh/g. |
| Databáze: |
Supplemental Index |
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