Electrolyte measuring infrared spectroscopic measurement device of the lithium ion secondary battery and measurement method thereof

摘要

PROBLEM TO BE SOLVED: To provide an infrared spectroscopic device and method capable of measuring, on the job site, a change of an electrolyte or any other chemical species on an electrode surface or in the vicinity of the electrode surface under electrochemical conditions similar to actual charging/discharging according to attenuation total reflection (ATR) without electrochemical and infrared spectroscopical constraint.;SOLUTION: An infrared spectroscopic device 2 comprises a working electrode 6 immersed in an electrolyte 16, a paired electrode 12 which is paired with the working electrode 6, a reference electrode 18 which specifies a potential of the working electrode 6, and a prism 4 of which the bottom face is brought into contact with the working electrode 6. Infrared light is made incident to an interface between the prism 4 and the working electrode 6 and reflected on the interface and spectrum of reflection light emitted from the prism 4 is obtained by a detector 22. Thus, the intensity of total reflection light of the infrared light is measured on the job site. The prism 4 is comprised of diamond.;COPYRIGHT: (C)2013,JPO&INPIT