Fast Li+ Transfer Achieved by Carbon Coating on Li4Ti5O12 Nanobelts

Rechargeable batteries used in portable devices and electric vehicles(EVs) and are considered to be the most promising candidate for energy storage system. To realize the energy storage system with rechargeable batteries, we should consider sustainable safety, cycle life, cost, and fast charge/discharge performance. In consideration of the above criteria mentioned, rechargeable lithium batteries are the best choice. However, safety and fast charge are the most urgent issues to be solved. Manganese-based transition metal oxides can be applicable for the positive electrode because of its reliable safety. For the negative electrode, there are several candidate materials. Among them, Li4Ti5O12 is believed the best choice because of the abundance, zero-strain during charge and discharge at a long term, and safety, if the poor rate capability is improved. For the reason, we, here, report the fast Li+ transfer ability of Li4Ti5O12(LTO) nanobelt.