title: Hierarchically ordered mesoporous Co3O4 materials for high performance Li-ion batteries.
abstract: Highly ordered mesoporous Co3O4 materials have been prepared via a nanocasting route with three-dimensional KIT-6 and two-dimensional SBA-15 ordered mesoporous silicas as templates and Co(NO3)2 · 6H2O as precursor. Through changing the hydrothermal treating temperature of the silica template, ordered mesoporous Co3O4 materials with hierarchical structures have been developed. The larger pores around 10 nm provide an efficient transport for Li ions, while the smaller pores between 3-5 nm offer large electrochemically active areas. Electrochemical impedance analysis proves that the hierarchical structure contributes to a lower charge transfer resistance in the mesoporous Co3O4 electrode than the mono-sized structure. High reversible capacities around 1141 mAh g(-1) of the hierarchically mesoporous Co3O4 materials are obtained, implying their potential applications for high performance Li-ion batteries.
authors.affiliation: College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 210009, China.
authors.forename: Shijiao
authors.initials: S
authors.lastname: Sun
authors.affiliation: College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 210009, China.
authors.forename: Xiangyu
authors.initials: X
authors.lastname: Zhao
authors.affiliation: College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 210009, China.
authors.forename: Meng
authors.initials: M
authors.lastname: Yang
authors.affiliation: College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 210009, China.
authors.forename: Linlin
authors.initials: L
authors.lastname: Wu
authors.affiliation: CAS key laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China.
authors.forename: Zhaoyin
authors.initials: Z
authors.lastname: Wen
authors.affiliation: College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 210009, China.
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Shen