OBSERVATION SAMPLE, OBSERVATION SAMPLE PREPARATION METHOD, AND OBSERVATION METHOD

摘要

PROBLEM TO BE SOLVED: To observe an observation sample including an electrode sheet of a lithium ion battery at a high contrast.SOLUTION: An observation sample is to be observed with a microscope, an electron beam microanalyzer, an X-ray CT apparatus, or a Raman spectrophotometer. The observation sample includes an electrode sheet of a lithium ion battery in which a metal whose fusion point is in the temperature range of 25-100°C is packed into the cavities.