Carbon-coated TiNb₂O₇ nanosheet arrays as self-supported high mass-loading anodes for flexible Li-ion batteries

A TiNb₂O₇ anode constructed with carbon-coated nanosheet arrays on carbon cloth is prepared by a facile solvothermal process and post carbon-coating for the first time. With nanosized diffusion-length and reduced polarization resistance, this anode exhibits superior high-rate capability based on relatively high mass-loading. Meanwhile, it demonstrates excellent cycling stability and mechanical flexibility as expected from flexible Li-ion batteries.