Expander & Active Material Additives

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These are additives to the negative active material of a battery to improve capacity, cold cranking performance, and cycle life. Hammond offers over 120 unique expander formulations that can be precision-tailored for a number of applications:

  • Automotive
  • Motive Power
  • Stationary Power
  • Advanced Applications
    • Start-stop and Micro Hybrid vehicle technology
    • High Rate Partial State of Charge (HRPSoC) applications
    • Green energy storage and load balancing

Please contact us to learn more about how Hammond can provide the best expander for your energy storage application.
SureCure is added to the positive active material paste where it acts as “seed crystals” for the formation of tetrabasic lead sulfate (TTBLS) during paste mixing and curing. Promoting the formation of TTBLS results in a number of benefits including increased battery cycle life, shortened curing time, and a more consistent product.


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