▎ 摘 要
In the present study, we report a synthetic strategy for the direct fabrication of hybrid vertical graphene/lithiumtitanate-CNTs arrays via atomic layer deposition in combination with chemical vapor deposition. A novel array architecture was formed where active lithium titanate (Li4Ti5O12, LTO) was uniformly sandwiched by a vertical graphene backbone and an interconnected CNTs shell. The hybrid omnibearing conductive network was identified to be an extremely stable porous structure and demonstrated superior ultra-high rate capability (146 mA h g(-1) at 50C and 131mA h g(-1) at 100C) with a capacity of 136mA h g(-1) at 20C after 10 000 cycleswhen used as an electrode in lithiumion batteries. This special electrode construction strategy is expected to provide a new route for the manufacture of electrochemical energy storage with ultra-high rate capability and ultra-stability.