Battery Expanders

Extending battery life with excellent performance

LignoStar supplies premium lignin products as plate expanders for lead batteries. Specifically, StarLig Vanillex can be applied as an additive in this application field. Vanillex N is a highly modified and partially desulfonated sodium oxylignin. It can replace and/or substitute other lignins like e.g. Vanisperse in this application field.

Vanillex N functions as the organic component of the negative plate expander, promoting the formation of optimal crystal sponge structure, and preventing crystal growth. It displays excellent performance extending battery life, low temperature cranking and improving reserve performance. The typical dosage rate is 0.2 % to 0.5% by wt.of lead oxide.

The following data and illustrations demonstrate the superior performance properties that Vanillex N brings to battery expanders, by limiting PbSO4 crystal growth in the electrolyte system.

PbSOcrystal distributions with Vanillex N (fig.1) and without (fig.2) obtained by SEM analysis.

Please contact us at any time for price quotes and further information about StarLig products for your specific process at or + 31 70 4161 714.

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