Chemical staining for fundamental studies and optimization of binders in Li-ion battery negative electrodes.

ABSTRACT: The spatial distribution of binders in Li-ion battery electrodes is critical to electrode performance, yet remains challenging to visualise, limiting binder optimisation efforts to chemical modifications rather than spatial control. Here, we show an accessible approach to staining carboxymethyl cellulose and styrene butadiene rubber binders in graphitic and Si-based Li-ion electrodes with silver and bromine, enabling detailed electron imaging and precise spectroscopic quantification of the binder domain. Leveraging these methods, we perform binder-informed optimisation of electrode manufacturing, achieving a 14% reduction in electronic resistivity, suppression of binder migration during high-temperature electrode drying, and a 40% decrease in electrode ionic resistance. Furthermore, staini

SUBMITTER: Zankowski SP 

PROVIDER: S-EPMC12913984 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature