title: Walnut-like Porous Core/Shell TiO2with Hybridized Phases Enabling Fast and Stable Lithium Storage.
abstract: TiO2is a promising and safe anode material for lithium ion batteries (LIBs). However, its practical application has been plagued by its poor rate capability and cycling properties. Herein, we successfully demonstrate a novel structured TiO2anode with excellent rate capability and ultralong cycle life. The TiO2material reported here shows a walnut-like porous core/shell structure with hybridized anatase/amorphous phases. The effective synergy of the unique walnut-like porous core/shell structure, the phase hybridization with nanoscale coherent heterointerfaces, and the presence of minor carbon species endows the TiO2material with superior lithium storage properties in terms of high capacity (∼177 mA h g-1at 1 C, 1 C = 170 mA g-1), good rate capability (62 mA h g-1at 100 C), and excellent cycling stability (∼83 mA h g-1was retained over 10 000 cycles at 10 C with a capacity decay of 0.002% per cycle).
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , 122 Luoshi Road, 430070, Wuhan, Hubei, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Cai
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , 122 Luoshi Road, 430070, Wuhan, Hubei, China.|Department of Materials Science and Engineering, University of Washington , Seattle, Washington 98195-2120, United States.
authors.forename: Hong-En
authors.identifier: http://orcid.org/0000-0002-6859-5683
authors.initials: HE
authors.lastname: Wang
authors.affiliation: Department of Materials Science and Engineering, University of Washington , Seattle, Washington 98195-2120, United States.
authors.forename: Xu
authors.initials: X
authors.lastname: Zhao
authors.affiliation: Department of Materials Science and Engineering, University of Washington , Seattle, Washington 98195-2120, United States.
authors.forename: Fei
authors.initials: F
authors.lastname: Huang
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , 122 Luoshi Road, 430070, Wuhan, Hubei, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , 122 Luoshi Road, 430070, Wuhan, Hubei, China.
authors.forename: Zhao
authors.initials: Z
authors.lastname: Deng
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , 122 Luoshi Road, 430070, Wuhan, Hubei, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Materials Science and Engineering, University of Washington , Seattle, Washington 98195-2120, United States.
authors.forename: Guozhong
authors.identifier: http://orcid.org/0000-0003-1498-4517
authors.initials: G
authors.lastname: Cao
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , 122 Luoshi Road, 430070, Wuhan, Hubei, China.|Laboratory of Inorganic Materials Chemistry (CMI), University of Namur , 61 rue de Bruxelles, B-5000 Namur, Belgium.|Department of Chemistry and Clare Hall, University of Cambridge , Cambridge CB2 1EW, U.K.
authors.forename: Bao-Lian
authors.initials: BL
authors.lastname: Su
keywords: TiO2; amorphous; anatase; anode material; electrochemical performance; lithium ion battery; porous core/shell structure; titanate