German researchers develop sodium-ion battery based on lignin
German researchers have developed a sodium-ion battery technology using lignin-based hard carbon as the negative electrode. The 1 Ah battery cell prototype showed no significant degradation after 100 charging and discharging cycles. February 5, 2026 Emiliano Bellini Researchers from Germany’s Fraunhofer Institute for Ceramic Technologies and Systems (IKTS) and the Friedrich-Schiller-University Jena have fabricated a prototype of a sodium-ion battery that uses lignin, a complex organic poly...






