Carbon Nanotubes used to increase performance of Lithium Ion Batteries

Report the excellent electrochemical response of lithium ion batteries with a mesoporous titanium dioxide (MTO) sphere and multi-walled carbon nanotube (MWCNT) composite as anode material, synthesized via a combined sol?gel and solvothermal method. The composite structure showed unprecedented discharge capacity, cycling stability, and reversibility as compared to bare TiO2 and mesoporous TiO2 spheres owing to its better electronic and ionic conductivity, high surface area, and the larger number of open channels offered by the synthesized structure for lithium ion intercalation. We achieved a discharge capacity as high as 316 mA h g?1 at a rate of C/5, which is 1.9 times higher than the theoretical capacity of TiO2, and almost 100% Coulombic efficiency. Moreover, we observed a capacity loss of only 3.1% after 100 cycles, which indicates the highly stable nature of the synthesized structure.

Source: http://pubs.acs.org/doi/abs/10.1021/am508158v?journalCode=aamick

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