Hydrothermal synthesis of Li4-xNaxTi5O12 and Li4-xNaxTi5O12/graphene composites as anode materials for lithium-ion batteriesJiping Zhu, Yangyang Zhang, Jie Zhu, Rui Duan and Yumin DaMATEC Web of Conferences, 65 (2016) 02008DOI: https://doi.org/10.1051/matecconf/20166502008