Effects of carbon source and carbon content on electrochemical performances of Li4Ti5O12/C prepared by one-step solid-state reaction

► A simple route to prepare the Li4Ti5O12/C by one-step solid-state reaction. ► Carbon source and carbon content are two important factors on the electrochemical performances of Li4Ti5O12/C. ► As-prepared Li4Ti5O12/C under optimized conditions shows excellent electrochemical performances.