Charge photometry captures subtle changes in the scattering of light as ions flow through electrode materials during battery cycling.
It harnesses the principles of optical interference reflection imaging to detect the light scattered by individual particles across an electrode. As ions move in and out of the electrode material, the resulting changes in light scattering reveal the local state-of-charge of each particle. Watch in real-time as each particle charges and discharges, while simultaneously monitoring changes in particle morphology that affect battery performance.
Capture the precise moment-by-moment transformation of particles across an electrode during battery cycling with unprecedented clarity
Ion transport into and out of particles in an electrode can alter their size, shape and volume. Charge photometry, as an optical imaging technique, enables real-time observation and tracking of these morphological changes during battery operation. The video below, captured using the illumionONE, shows several silicon particles (cycled at C/20) expanding and subsequently fracturing into smaller fragments.
