Bulk Ti2Nb10O29 as long-life and high-power Li-ion battery anodes

Abstract

Ti₂Nb₁₀O₂₉ is fabricated directly by solid-state reaction from commercial TiO₂ and Nb₂O₅. Without further modification, the bulk Ti₂Nb₁₀O₂₉ anode exhibits a reversible capacity of 144 mA h g⁻¹ at 10 C after 800 cycles. More impressively, the capacity of the Ti₂Nb₁₀O₂₉/LiFePO₄ full-cell at 1 C stabilizes at 100 mA h g⁻¹ after 1000 cycles.