Identifying Contamination in Battery Electrodes

Application Note: Rapidly detect and diagnose electrode contamination in battery manufacturing

This application note addresses the critical challenge of contamination in battery electrode manufacturing, where scrap rates of up to 30% during production ramp-up drive the need for rapid quality assurance.

It demonstrates how Massbox identifies contaminants and compositional inhomogeneities in coated electrodes within 15 minutes, which is significantly faster than traditional methods. The study analyzes both graphite anodes and lithium-nickel-manganese-cobalt (NMC) cathodes, revealing a stainless-steel particle contamination and an unexpected cross-contamination between anode and cathode.

Results showcase homogeneous lithium distribution mapping in pristine cathodes, micron-scale contamination detection across millimeter-scale areas, and the system's ability to detect all elements without pre-specification, providing insights beyond standard expectations for advancing battery reliability and manufacturing efficiency.

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