Abstract
Nanostructured Li4Ti5O12/CNT composite particles were synthesized using an aerosol spray drying process followed by thermal annealing. After assembling into CNT networks, lightweight, flexible and binder-free Li4Ti5O12/CNT anodes were fabricated for lithium-ion batteries. Electrodes fabricated from these nanocomposites showed effective electron and ion transport and, more importantly, more robust structure compared to traditional binder-bonded electrodes. The electrodes delivered a high reversible capacity and superior rate performance up to an extremely high rate of 100C. Moreover, ultralong cycling stability was attained through 8000 rapid charge-discharge cycles with 89% capacity retention. These results demonstrate the feasibility of ultrafast batteries.
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