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.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 polymer found in the cell walls of plants, as electrode material. Lignin is an abundant by-product of the wood and pulp industry. After processing, ...

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