Synthesis of High-Density Nanocavities inside TiO2−B Nanoribbons and Their Enhanced Electrochemical Lithium Storage Properties

Abstract

Single crystalline TiO₂−B nanoribbons with high-density nanocavities were successfully synthesized via a simple hydrothermal route. The as-prepared TiO₂−B nanoribbons exhibited a large Brunauer, Emmett, and Teller (BET) surface area of about 305 m²/g because of the high-density nanocavities inside the thin nanoribbons. Electrochemical measurements indicated that the TiO₂−B nanoribbons with dense nanocavities showed discharge specific capacity higher than those of TiO₂−B nanotubes and nanowires. It was found that the dense nanocavities have an important influence on the electrochemical lithium intercalation properties.