Unlocking the Potential of Hydrolysis Lignin for Lead-Acid Battery Performance

Hydrolysis lignin is a distinct and underutilized form of lignin with exceptional purity and functionality, making it a promising material for energy storage applications. Unlike conventional lignins, hydrolysis lignin offers a more controlled molecular structure, reduced impurities, and optimized functional groups—key attributes that enhance its performance in lead-acid batteries.

Synergy Horizon has developed S-Drill™ EXP, a refined hydrolysis lignin-based expander designed to improve lead-acid battery efficiency. Through oxidative reactive extrusion, the molecular properties of hydrolysis lignin are further tailored to provide high-level cold cranking amps (CCA), enhanced charge acceptance, dynamic charge acceptance (DCA), and extended battery lifespan. Unlike traditional lignin expanders, S-Drill™ EXP maintains charge acceptance even at higher dosages, making it particularly effective for enhanced flooded batteries (EFBs) and start-stop systems operating under partial state of charge (PSoC) conditions.

Beyond its electrochemical benefits, hydrolysis lignin’s unique structure ensures an optimized lignin-to-carbon balance, reducing water loss and hydrogen evolution—factors that contribute to longer battery life and improved stability. Its performance has been validated in accordance with EN 50342 standards, reinforcing its suitability as a cost-effective and scalable alternative to traditional expander materials.

As the battery industry seeks more sustainable and efficient materials, hydrolysis lignin may provide a reliable solution for improving lead-acid battery performance while supporting environmental and economic goals.

Presenters

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Alexander Gonchar

R&D chief, Synergy Horizon

Poland

Mr. Alexander Gonchar is a chemist and seasoned expert with over 15 years of experience in polymers and biopolymers, specializing in their industrial processing and the valorization of lignin into high-value chemicals. He has spent a decade as R&D Head and Chief R&D Engineer, driving innovative solutions in various industries.
As R&D Chief of Synergy Horizon, Mr. Gonchar leads cutting-edge self-funded projects targeting lignin valorization across a number of sectors. Since its establishment in 2011, Synergy Horizon has developed a diverse portfolio of R&D initiatives, encompassing concept formation, experimentation, prototype development, and full-scale production. The company is committed to offering practical, economically sound technologies that promote a more responsible use of resources, ensuring its lignin-based innovations contribute to a more sustainable future.

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Mr Achim Lulsdorf

Independent consultant and industry expert, Independent consultant and industry expert

USA

Mr. Achim Lulsdorf is a physicist and experienced battery technologist with over 30 years in the lead-acid battery industry. He has worked globally with major battery manufacturers and key suppliers, specializing in battery performance optimization, materials development, and production processes. Mr. Lulsdorf has played a significant role in advancing battery technology through research, innovation, and technical consulting.