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Lithium titanate has unique “zero-strain” characteristics,which makes it promising for rapid energy storage lithium-ion capacitors.However,extremely low electronic conductivity and lithium ion diffusion coefficient severely limit its performance at high rate.Herein,we have constructed in situ clusters of porous lithium titanate nanoparticles on self-supporting carbon nanotube film by combining iron oxide hard template method and F127 soft template method.Due to the nano-structured particle size and the penetrating lithium ion transmission channel,a greatly improved lithium ion diffusion coefficient has been achieved,which brings significantly better electrochemical performance than dense lithium titanate.By assembling with a durable graphene foam cathode,a lithium-ion capacitor with an energy density of up to 101.8 Wh kg-1 was realized (at a power density of 436.1 W kg-1).And its capacitance retention reaches 84.8％ after 5000 cycles.With such an alluring result,our work presents a novel lithium-ion capacitor system with practical application prospects.