【摘要】 拉曼光谱和傅里叶变换红外光谱是重要的物理表征方法,在电化学领域尤其是锂电池领域具有广泛的应用,常用于分析分子价键、官能团振动和转动能级跃迁状态、物相结构变化、稳定性、表面现象以及反应机理,相关谱学数据又可以计算化学键的键能、键长、键角等。本文介绍了拉曼和红外光谱的基本原理、测试方法、测试注意事项、常用测试设备及测试流程,并结合实际案例,具体分析了拉曼和红外光谱在锂电池电极材料、电解质、黏结剂等组分分析方面,及其在充放电循环中的生成产物对电化学稳定性的影响方面的应用研究。更多还原

【Abstract】 Raman spectroscopy and Fourier transform infrared spectroscopy(FTIR) are important physical characterization methods. They are widely used in the field of electrochemistry, especially in the field of lithium batteries. They are commonly used to analyze molecular valence bonds, functional group vibration and rotational energy level transition states, phase structure changes, stability, surface phenomena and reaction mechanism, the correlation spectroscopy data can calculate the bond energy, bond length, bond angle, etc. of the chemical bond. This paper introduces the basic principles, test methods, test precautions, common test equipment and test procedures of Raman and infrared spectroscopy, and analyzes Raman and infrared spectroscopy in lithium battery electrode materials, electrolytes and binders. The application of isocomponent analysis and its influence on the electrochemical stability of the product formed in the charge and discharge cycle.更多还原