Studying the structure and structural changes of the ternary material is helpful to better understand the performance of the ternary material.
XRD is a device specially used to analyze the crystal structure of materials. It can obtain the unit cell parameters and ion mixing information of ternary materials through refinement.and it is widely used in ternary material preparation technology and material doping modification, as well as in-situ high-temperature thermal properties of ternary materials. In-situ charge and discharge XRD experiments can directly study the structural changes and phase transformations of positive and negative electrode materials during the charge and discharge process of button-structure lithium-ion battery materials.
In addition, XRD technology can also be used to conduct thermal failure analysis of lithium-ion batteries, such as XRD analysis from burning residues to initially determine the cause of failure.
Carbon materials are currently the ideal anode material for lithium-ion batteries. The type of carbon material determines the lithium insertion potential and working voltage reversible performance of lithium-ion batteries. The gram capacity is an important indicator for measuring carbon materials, but testing the gram capacity is usually done as a battery test, which takes a lot of time and the stability of the test values is also relatively poor.
The degree of graphitization refers to the proportion of graphite crystals in composite materials containing graphite crystals and various transition state carbons. Theoretically, the gram capacity of carbon materials can be estimated based on the degree of graphitization. XRD can confirm the existence of graphite structure, evaluate the degree of graphitization and crystallinity, and thereby calculate the gram capacity of carbon materials.