title: Enhanced Structural and Electrochemical Stability of Self-Similar Rice-Shaped SnO2Nanoparticles.
abstract: A facile one-pot hydrothermal strategy is applied to prepare Co and F codoped SnO2(Co-F/SnO2) nanoparticles, which exhibit a unique rice-shaped self-similar structure. Compared with the pristine and Co-doped counterparts (SnO2and Co/SnO2), the Co-F/SnO2electrode demonstrates higher capacity, better cyclability, and rate capability as anode material for lithium ion batteries (LIBs). A high charge capacity of 800 mAh g-1can be successfully delivered after 50 cycles at 0.1 C, and a high reversible capacity of 700 mAh g-1could be retained after 100 cycles at 5 C. The excellent lithium storage performances of the Co-F/SnO2nanoparticles could be attributed to the synergetic effects of the doped Co and F, as well as the unique hierarchical self-similar structure with moderate oxygen defect and inactive pillars, which not only facilitates the fast diffusion of Li ions, but also stabilizes the structure during the electrochemical cycling.
authors.affiliation: Henan Key Laboratory of Photovoltaic Materials and School of Physics & Electronics, Henan University , Kaifeng 475004, P.R. China.
authors.forename: Du
authors.initials: D
authors.lastname: Pan
authors.affiliation: Henan Key Laboratory of Photovoltaic Materials and School of Physics & Electronics, Henan University , Kaifeng 475004, P.R. China.
authors.forename: Ning
authors.initials: N
authors.lastname: Wan
authors.affiliation: Henan Key Laboratory of Photovoltaic Materials and School of Physics & Electronics, Henan University , Kaifeng 475004, P.R. China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Ren
authors.affiliation: Henan Key Laboratory of Photovoltaic Materials and School of Physics & Electronics, Henan University , Kaifeng 475004, P.R. China.
authors.forename: Weifeng
authors.initials: W
authors.lastname: Zhang
authors.affiliation: College of Energy, Beijing University of Chemical Technology , Beijing 100029, P.R. China.
authors.forename: Xia
authors.identifier: http://orcid.org/0000-0003-3504-9069
authors.initials: X
authors.lastname: Lu
authors.affiliation: Institute of Physics, Chinese Academy of Sciences , Beijing 100190, P.R. China.
authors.forename: Yuesheng
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Institute of Physics, Chinese Academy of Sciences , Beijing 100190, P.R. China.
authors.forename: Yong-Sheng
authors.initials: YS
authors.lastname: Hu
authors.affiliation: Henan Key Laboratory of Photovoltaic Materials and School of Physics & Electronics, Henan University , Kaifeng 475004, P.R. China.
authors.forename: Ying
authors.identifier: http://orcid.org/0000-0001-7835-7067
authors.initials: Y
authors.lastname: Bai
keywords: SnO2; codoping; hierarchical structure; lithium ion batteries (LIBs); synergetic effect