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A hierarchically nanotubular MoO 3 /SnO 2 composite was synthesized based on the layer-by-layer self À assemble process followed by a calcination treatment, employing natural cellulose substance (commercial filter paper) as structural scaffold. This nanocomposite is composed of molybdenum trioxide nanocrystallites immobilized as a thin layer on the tin oxide nanotube surface. As being utilized as a host material for lithium storage, the MoO 3 /SnO 2 nanocomposite exhibited high reversible specific capacity, good cyclability and enhanced rate performance as compared with the pure SnO 2 and MoO 3 counter materials. For the nanotubular MoO 3 /SnO 2 composite with 48.9 wt% MoO 3 content, it delivered an initial discharge capacity of 1930.6 mAh g À 1 and a stable specific capacity of 1084.1 mAh g À 1 after 100 discharge/charge cycles at a current density of 100 mA g À 1 . The excellent lithium storage performance of the MoO 3 /SnO 2 composite is benefited from the sophisticated hierarchically three-dimensional network structures and the synergistic interaction between MoO 3 and SnO 2 components upon repeated lithiation/delithiation processes.[a] Dr.

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