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Li4Ti5O12/C composite materials were synthesized by two-step solid state reaction method with glucose,sucrose,and starch as carbon sources,respectively.The effects of carbon sources on the structure,morphology,and electrochemical performance of Li4Ti5O12/C composite materials were investigated by SEM,XRD and electrochemical tests.The results indicate that carbon sources have almost no effect on the structure of Li4Ti5O12/C composite materials.The initial discharge capacities of the Li4Ti5O12/C composite materials are slightly lower than those of as-synthesized Li4Ti5O12.However,Li4Ti5O12/C composite materials show better electrochemical rate performance than the as-synthesized Li4Ti5O12.The capacity retention(79%) of the Li4Ti5O12/C composite materials with starch as carbon source,is higher than that of Li4Ti5O12/C composite materials with glucose and sucrose as carbon source at current rate of 2.0C.
Li4Ti5O12 / C composite materials were synthesized by two-step solid state reaction method with glucose, sucrose, and starch as carbon sources, respectively. These effects of carbon sources on the structure, morphology, and electrochemical performance of Li4Ti5O12 / C composite materials were investigated by SEM, XRD and electrochemical tests. The results indicate that carbon sources have almost no effect on the structure of Li4Ti5O12 / C composite materials. The initial discharge capacities of the Li4Ti5O12 / C composite materials are slightly lower than those of as-synthesized Li4Ti5O12. However, Li4Ti5O12 / C composite materials show better electrochemical rate performance than the as-synthesized Li4Ti5O12. Capacity capacity (79%) of the Li4Ti5O12 / C composite materials with starch as carbon source, is higher than that of Li4Ti5O12 / C composite materials with glucose and sucrose as carbon source at current rate of 2.0C.