Abstract
Sodium titanate nanotube (Na-TNT) sample has been prepared by a hydrothermal method using TiO2 and NaOH as starting materials and then calcined at 400 °C in air. X-ray diffraction and N2 adsorption–desorption tests have been employed to characterize its crystal and pore structure. The Na-TNT can be used as the negative electrode for electric energy storage devices using Na+-based organic electrolytes. The charge storage mechanism at the Na-TNT negative electrode has been investigated by electrochemical tests (galvanostatic charge–discharge, cyclic voltammetry, etc.), ex-situ XRD and HRTEM measurements. The electric energy storage devices of Na-TNT/graphite have been constructed and the influence of graphite/Na-TNT mass ratio on their performance has been studied.
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