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Yanshuang Meng,Zhong Zhang,Wangqing Han,Yue Zhang,Fuliang Zhu,Da-jian Wang 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2016 NANO Vol.11 No.1
A one-step microwave-assisted pyrolysis of ionic liquid process is developed to synthesize carbon-coated LiFePO4 by using the ionic liquid [BMIm]N(CN)2 as a carbon source. A thin layer of uniform and nanoscaled carbon film is formed on the LiFePO4 particles surface with a strong interface. The electrochemical properties of LiFePO4 are improved due to the carbon coating which increases the electronic conductivity of LiFePO4. The results indicate that the microwaveassisted pyrolysis of ionic liquid process is a rapid and efficient method to prepare carbon-coated LiFePO4 material and other carbon-coated electrode materials.
A novel numerical approach for workspace determination of parallel mechanisms
Yiqun Zhou,Junchuan Niu,Zhihui Liu,Fuliang Zhang 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.6
In this paper, a novel numerical approach is proposed for workspace determination of parallel mechanisms. Compared with the classicalnumerical approaches, this presented approach discretizes both location and orientation of the mechanism simultaneously, not onlyone of the two. This technique makes the presented numerical approach applicable in determining almost all types of workspaces, whiletraditional numerical approaches are only applicable in determining the constant orientation workspace and orientation workspace. Thepresented approach and its steps to determine the inclusive orientation workspace and total orientation workspace are described in detail. A lower-mobility parallel mechanism and a six-degrees-of-freedom Stewart platform are set as examples, the workspaces of thesemechanisms are estimated and visualized by the proposed numerical approach. Furthermore, the efficiency of the presented approach isdiscussed. The examples show that the presented approach is applicable in determining the inclusive orientation workspace and totalorientation workspace of parallel mechanisms with high efficiency.