title: Porous TiO2/C nanocomposite shells as a high-performance anode material for lithium-ion batteries.
abstract: Porous TiO2/C nanocomposite shells with high capacity, excellent cycle stability, and rate performance have been prepared. The synthesis involves coating colloidal TiO2 nanoshells with a resorcinol-formaldehyde (RF) layer with controllable thickness through a sol-gel-like process, and calcining the composites at 700 °C in an inert atmosphere to induce crystallization from amorphous TiO2 to anatase and simultaneous carbonization from RF to carbon. The cross-linked RF polymer contributes to the high stability of the shell morphology and the porous nature of the shells. A strong dependence of the capacity on the amount of incorporated carbon has been revealed, allowing the optimization of the electrode structure for high-rate cell performance.
authors.affiliation: Department of Chemistry, University of California, Riverside, California 92521, United States.
authors.forename: Wenshou
authors.initials: W
authors.lastname: Wang
authors.forename: Qina
authors.initials: Q
authors.lastname: Sa
authors.forename: Jihua
authors.initials: J
authors.lastname: Chen
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.forename: Heejung
authors.initials: H
authors.lastname: Jung
authors.forename: Yadong
authors.initials: Y
authors.lastname: Yin