The performance of Li-ion batteries mainly depends on electrode active material properties. However, the advanced characterization of obtaining the essential electrode materials properties is extremely required for electrode materials R&D. We developed the world＇s first single-particle electrode measurement, which shows precise electrochemical measurements of obtaining the essential electrode materials properties. Single-particle electrode measurement will become the vital characterization technology for electrode materials R&D in Li-ion batteries as well as advanced rechargeable batteries.