S. Tian
Fudan University
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Publication
Featured researches published by S. Tian.
Energy and Environmental Science | 2011
Q.T. Qu; Lijun Fu; Xiaoyun Zhan; Dominik Samuelis; Joachim Maier; Lei Li; S. Tian; Zhaohui Li; Yuping Wu
A porous LiMn2O4 consisting of nano grains was prepared by using polystyrene as template. It was studied as a cathode material for aqueous rechargeable lithium batteries (ARLBs) using 0.5 mol l−1Li2SO4 aqueous solution as the electrolyte. Charge and discharge capacities at a current density of 10 A g−1 (about 90C) were 76% and 95% of the total capacity (118 mAh g−1), respectively. The power density can be up to 10000 W kg−1 and the cycling behavior is excellent. After 10000 cycles at 9C with 100% DOD (depth of discharge), the capacity retention of porous LiMn2O4 is 93%, which indicates that it can be used for a lifetime without maintenance. The main reasons for its excellent electrochemical performance are due to the nano grains, porous morphology and high crystalline structure. In addition, the acid-free aqueous electrolyte prevents Mn2+ from dissolution. These excellent results suggest a great promise for the development of aqueous rechargeable lithium batteries (ARLBs) in practical application.
Functional Materials Letters | 2013
S. Tian; Lili Liu; Y. S. Zhu; Y. Y. Hou; C. L. Hu; Yuping Wu
Modified LiCoO2 was prepared via a sol–gel method followed by a TiO2 coating and characterized by X-ray diffraction analysis, transmission electronic microscopy and various measurements of charge/discharge behavior. Its cycling performance and rate capability were greatly improved compared to the original LiCoO2. The initial capacity of the TiO2-coated LiCoO2 is 134 mAh g-1 at the current density of 5000 mA g-1. When the current density increases to 10,000 mA g-1, the cathode displays an initial capacity of 128 mAh g-1, much higher than that (<101 mAh g-1) for the virginal LiCoO2, and shows no evident capacity fading after 100 cycles.
Functional Materials Letters | 2011
Lili Liu; W. Tang; S. Tian; Y. Shi; Yuping Wu; G. J. Yang
LiV3O8 nanorod material was prepared by a simple sol–gel method. The electrochemical properties of the as-prepared LiV3O8 in 0.5 M Li2SO4 aqueous electrolyte were studied through cyclic voltammograms (CV) and discharge–charge measurements. Experiments show that this nanorod material can deliver the capacities of 72, 62 and 53 mAh/g at 20, 50, 100 mA/g, respectively. After 50 cycles, it can maintain 64, 47 and 40 mAh/g, corresponding to 88%, 76% and 77% of the initial capacities, which suggest that this nanorode material presents good cycling performance as anode material for aqueous rechargeable lithium batteries.
Journal of Physical Chemistry C | 2009
Q.T. Qu; Peng Zhang; Bin Wang; Yuhui Chen; S. Tian; Yuping Wu; Rudolf Holze
Journal of Power Sources | 2009
Q.T. Qu; Yongyong Shi; S. Tian; Yang Chen; Y.P. Wu; Rudolf Holze
Chemical Communications | 2011
Wei Tang; Lili Liu; S. Tian; Lei Li; Y.B. Yue; Yuping Wu; Kai Zhu
Electrochemistry Communications | 2008
Q.T. Qu; B. Wang; L.C. Yang; Yongmei Shi; S. Tian; Yuping Wu
Journal of Power Sources | 2010
Q.T. Qu; Lei Li; S. Tian; Wenling Guo; Yuping Wu; Rudolf Holze
Electrochemistry Communications | 2011
Wei Tang; S. Tian; Lili Liu; L.L. Li; H.P. Zhang; Y.B. Yue; Y. Bai; Y.P. Wu; Kai Zhu
Electrochemistry Communications | 2010
Wei Tang; Lili Liu; S. Tian; Liangyu Li; Y.B. Yue; Y.P. Wu; S.Y. Guan; Kai Zhu