(1.College of Chemistry & Material Science, Northwest University, Xi’an 710127, China) (2.School of Cultural Heritage, Northwest University, Xi’an 710127, China)
Atomic force microscope(AFM) is one of the most important advances in surface imaging technology. It can provide local morphology, chemical and physical information of materials on the nanometer scale. In recent years, amplitude modulation-frequency modulation, Kelvin probe force microscopy, electrochemical strain microscopy, scanning spreading resistance microscopy and other imaging modes have been derived from the original mode of AFM, which can provide more mechanical, electrical and electrochemical information. At present, these state-of-the-art AFM methods have been applied to energy storage systems, specifically lithium-ion batteries. The physical and chemical information of the electrode surface is provided on the nanometer scale, which provides a reliable experimental basis for further understanding the electrochemical process, degradation mechanism and dynamic performance of lithium-ion batteries. This paper reviews the working principle and working mode of AFM, introduces the latest application of AFM in the research of the negative materials of lithium-ion batteries. Finally, the application of AFM in the field of negative materials of lithium-ion batteries is prospected.