Lithium ion hybrid electrochemical supercapacitors (Li-HESCs) with higher power density than rechargeable batteries and comparative energy density with supercapacitor have been developed recently to meet the practical applications. A novel Li-HESC is designed in this work with TiNb2O7@carbon negative electrode and carbon fibers positive electrode. TiNb2O7@carbon, a new type lithium ion intercalation pseudo-capacitance electrode, exhibits a capacity of 280mA h/g at a current density of 0.2A/g in the potential window of 1.0–3.0V vs. Li+/Li. Meanwhile, the electrode shows a high specific capacitance of 759F/g when calculated between 1.0 and 2.0V vs. Li+/Li at current density of 0.1A/g. When assembled into a Li-HESC with carbon fiber electrode, an ultrahigh energy density of 110.4Wh/kg is obtained at power density of 99.58W/kg, which also remains at 20W h/kg even under power density of 5464W/kg, much higher than those of the symmetric supercapacitors based on carbon fibers//carbon fibers, CMK-3//CMK-3, and some other Li-HESCs, indicating its potential practical applications in hybrid electric vehicles and electric vehicles.