TiO2 nanodisks designed for Li-ion batteries: a novel strategy for obtaining an ultrathin and high surface area anode material at the ice interface

• DOI: 10.1039/c3ee41880d
• Publication Date: 2013-08-23T10:30:08Z
• Authors: Gonu Kim; Changshin Jo; Wooyul Kim; Jinyoung Chun; Songhun Yoon; Jinwoo Lee; Wonyong Choi
• Keywords: TITANIUM-DIOXIDE; ELECTROCHEMICAL PROPERTIES; EXPOSED 001 FACETS; TEMPLATE-FREE; PERFORMANCE; LITHIUM-STORAGE PERFORMANCE; NANOSHEETS; 01 natural sciences; 7. Clean energy; PARTICLE-SIZE; 0104 chemical sciences; HIGH-POWER; LITHIUM-STORAGE; SANDWICH-LIKE; SOL-GEL PROCESS; ANATASE TIO2

A rapid and relatively large-scale production of ultrathin TiO2 nanodisks was achieved under mild conditions by developing a novel and simple sol–gel process occurring at the interface of an organic solvent and ice. Owing to the ultrathin structure and unusually high surface area (>400 m2 g−1), the TiO2 nanodisks exhibited high reversible capacity (191.4 mA h g−1 at 0.2 C) and excellent rate performance (58% capacity retention at 20 C) as an anode in lithium ion batteries.