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- W2278087712 abstract "Inspired by Goodenough’s pioneering work [1], olivine phase lithium iron phosphate has been extensively studied as a promising cathode material over the last decade. A key hurdle for widespread commercialization of this material is the development of an economical manufacturing process. A low temperature, soft chemistry route, such as hydrothermal synthesis, offers a low cost and efficient process for making electrode materials, which are essential components of the battery. Hydrothermal synthesis has been demonstrated to be an effective route for preparing the promising cathode, LiFePO4 and its similar compounds in the olivine family. However, it has been found the site mixing of cations is a potential problem with materials synthesized by this method [2]. It is expected that the intrinsic anti-site defects, Li-Fe pair, play an important role in the electrochemical performance of these materials. In this paper we will discuss the effects of varying synthesis parameters (e.g., temperature, reducing agent and organic acid) on structural defects in LiFePO4, which form during hydrothermal synthesis. In our study, high purity lithium iron phosphate and lithium manganese phosphate were prepared by the direct-hydrothermal synthesis. The cation disorder between iron and lithium sites was first studied by Cu Kα powder x-ray diffraction. A more precise determination of the site-occupancy and the formation of anti-site defects in the hydrothrermally prepared LiFePO4 were determined with high-resolution synchrotron x-ray diffraction. Both ex-situ and in-situ Xray powder diffraction studies were performed at the National Synchrotron Light Source (Brookhaven National Laboratory).The high-resolution synchrotron x-ray diffraction measurement were done as a function of temperature. Other olivine phosphates such as LiMnPO4 and LiCoPO4 will also be discussed in this presentation." @default.
- W2278087712 created "2016-06-24" @default.
- W2278087712 date "2010-01-01" @default.
- W2278087712 modified "2023-09-25" @default.
- W2278087712 title "Anti-Sites Defects Study on Hydrothermally Prepared LiFePO4 by Synchrotron Radiation X-ray Diffraction" @default.
- W2278087712 doi "https://doi.org/10.1149/ma2010-02/6/357" @default.
- W2278087712 hasPublicationYear "2010" @default.
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