Binder staining 3 (IMAGE)

University of Oxford

Binder staining 3

Caption

Detecting different binder content in bi-layered electrodes using staining and energy-dispersive X-ray spectroscopy (EDX). The images show cross-sections of a bilayer electrode, which was made by first depositing binder-rich slurry (bottom electrode layer), followed by depositing binder-lean slurry (top electrode layer) – the bottom layer had 4× more amount of carboxymethyl cellulose (CMC) and of styrene butadiene rubber (SBR) compared to the top layer. Binders are invisible in conventional electron microscopy (left side of the images) but become visible in EDX mapping after Br and Ag staining (right side of the images). The EDX maps of Br and Ag reflect the differences in binder content between the lower and upper electrode layers with 80-97.5% accuracy. Credit: Stanislaw Zankowski.

Credit

Stanislaw Zankowski.

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