2KG – 100KG.
Basic information and market space of binders: Binders mainly interact with positive and negative active materials and conductive agents, and are bonded to the current collector to maintain the integrity of the electrodes during charging and discharging. Positive electrode materials basically use oily binder PVDF (polyvinylidene fluoride), and high-end lithium batteries basically use imported PVDF materials. The current market space is about 24.9 billion. Positive electrode binders account for 1.4%-1.65% of the cost of ternary lithium batteries and about 2.2%-2.5% of the cost of lithium iron phosphate batteries; in terms of negative electrode materials: graphite negative electrodes use CMC+SBR (sodium carboxymethyl cellulose + styrene-butadiene rubber). Currently, products mainly rely on Japan and Europe and the United States, and currently account for 1.07%-1.37% of the cost of lithium batteries. Silicon-based negative electrodes will use PAA (polyacrylic acid) as a binder, but Chinese PVDF binders are cheap and suitable for preliminary battery research.
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