title: Porous CuO nanotubes/graphene with sandwich architecture as high-performance anodes for lithium-ion batteries.
abstract: Constructing a porous conductive framework represents a promising strategy for designing high-performance anodes for Li-ion batteries. Here, porous CuO nanotubes/graphene with hierarchical architectures were fabricated by simple annealing of copper nanowires/graphene hybrids synthesized by a microwave-assisted process. In these nanoarchitectures, the embedded porous CuO nanotubes can prevent restacking of the graphene sheets, whereas graphene can increase the electrical conductivity of CuO. Moreover, these two components constitute a sandwich-like interlaced framework that favors ion diffusion, as well as promoting better electron transport. As a result, the as-prepared nanohybrid exhibits a high specific capacity of 725 mA h g-1and a capacity retention of ∼81% after 250 cycles, as well as outstanding rate performance in comparison to those of bare CuO or a CuO-CNT (carbon nanotubes) hybrid.
authors.affiliation: Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, International Joint Lab of Resource Chemistry SHNU-NUS-PU, Department of Chemistry, Shanghai Normal University, Shanghai 200234, China. dqzhang@shnu.edu.cn Hexing-li@shnu.edu.cn phycw@nus.edu.sg and Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore, Singapore.
authors.forename: Shuning
authors.initials: S
authors.lastname: Xiao
authors.affiliation: Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, International Joint Lab of Resource Chemistry SHNU-NUS-PU, Department of Chemistry, Shanghai Normal University, Shanghai 200234, China. dqzhang@shnu.edu.cn Hexing-li@shnu.edu.cn phycw@nus.edu.sg.
authors.forename: Donglai
authors.initials: D
authors.lastname: Pan
authors.affiliation: Department of Physics, National University of Singapore, 2 Science Drive 3, 117542 Singapore, Singapore.
authors.forename: Liangjun
authors.initials: L
authors.lastname: Wang
authors.affiliation: Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, International Joint Lab of Resource Chemistry SHNU-NUS-PU, Department of Chemistry, Shanghai Normal University, Shanghai 200234, China. dqzhang@shnu.edu.cn Hexing-li@shnu.edu.cn phycw@nus.edu.sg.
authors.forename: Zhengzhong
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore, Singapore.
authors.forename: Zhiyang
authors.initials: Z
authors.lastname: Lyu
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore, Singapore.
authors.forename: Wenhao
authors.initials: W
authors.lastname: Dong
authors.affiliation: Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, International Joint Lab of Resource Chemistry SHNU-NUS-PU, Department of Chemistry, Shanghai Normal University, Shanghai 200234, China. dqzhang@shnu.edu.cn Hexing-li@shnu.edu.cn phycw@nus.edu.sg.
authors.forename: Xiaolang
authors.initials: X
authors.lastname: Chen
authors.affiliation: Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, International Joint Lab of Resource Chemistry SHNU-NUS-PU, Department of Chemistry, Shanghai Normal University, Shanghai 200234, China. dqzhang@shnu.edu.cn Hexing-li@shnu.edu.cn phycw@nus.edu.sg.
authors.forename: Dieqing
authors.initials: D
authors.lastname: Zhang
authors.affiliation: Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, International Joint Lab of Resource Chemistry SHNU-NUS-PU, Department of Chemistry, Shanghai Normal University, Shanghai 200234, China. dqzhang@shnu.edu.cn Hexing-li@shnu.edu.cn phycw@nus.edu.sg and Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore, Singapore and Department of Physics, National University of Singapore, 2 Science Drive 3, 117542 Singapore, Singapore.
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.affiliation: Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, International Joint Lab of Resource Chemistry SHNU-NUS-PU, Department of Chemistry, Shanghai Normal University, Shanghai 200234, China. dqzhang@shnu.edu.cn Hexing-li@shnu.edu.cn phycw@nus.edu.sg.
authors.forename: Hexing
authors.initials: H
authors.lastname: Li