Experimental method
Comparison of initial capacity
By combing with graphene, the initial capacity of the cathode was 1.5 times higher than that without graphene.
| Active material | Active material: Conductive agent: Binder = 80: 10: 10 |
|---|---|
| counter electrode | Lithium metal |
| Electrolyte |
1M LiPF6, EC/DEC no additive |
| Current rate |
0.1C |
Comparison of discharge rate performances with and without graphene
Discharge rate performance from 0.5C to 50C
- By combining with graphene, the discharge capacity is increased by 50%.
- Part of the charge / discharge capacity can be attributed to graphene
Cycle performance at Room temperature (1C)
- After 500 cycles, the discharge capacity of the cathode with graphene is 15% higher than that without graphene
- On the other hand, the decrease in Coulomb efficiency is thought to be the effect of the resistive film formed on graphene, and the electrolyte composition is being optimized.
