Lithium Batteries for Electric Vehicles

该研究将涉及使用光学显微镜，NMR光谱，以及锂离子阴极材料锂镍氧化物的晶体学和电化学研究，用于电动汽车的高能量和高功率锂电池。要解决的具体问题，包括一系列的相变，发生在delithation和阳离子和电子订购的作用，这些相变的性质。局部结构的方法，如X射线吸收光谱和NMR光谱将被用来研究这些d-7材料的Jahn-Teller排序作为温度的函数。从长远来看，掺杂的影响，如W的相变和Jahn-Teller排序将被探索，将可能的退化模式。

The study will involve the use of optical microscopy, NMR spectroscopy, and crystallographic and electrochemical studies of the lithium-ion cathode material lithium nickel oxide for high energy and high power lithium batteries for electric vehicles. The specific questions to be addressed include the nature of the series of phase transitions that occur on delithation and the role that cation and electronic ordering has on these phase transitions. Local structural methods such as X-ray absorption spectroscopy and NMR spectroscopy will be used to study the Jahn-Teller ordering in these d-7 materials as a function of temperature. In the longer term, the effect of doping such as W on phase transitions and Jahn-Teller ordering will be explored, as will possible degradation modes.