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Lignin-based active anode materials synthesized from low-cost renewable resources

United States Patent

June 7, 2016
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A method of making an anode includes the steps of providing fibers from a carbonaceous precursor, the carbon fibers having a glass transition temperature T.sub.g. In one aspect the carbonaceous precursor is lignin. The carbonaceous fibers are placed into a layered fiber mat. The fiber mat is fused by heating the fiber mat in the presence of oxygen to above the T.sub.g but no more than 20% above the T.sub.g to fuse fibers together at fiber to fiber contact points and without melting the bulk fiber mat to create a fused fiber mat through oxidative stabilization. The fused fiber mat is carbonized by heating the fused fiber mat to at least C. under an inert atmosphere to create a carbonized fused fiber mat. A battery anode formed from carbonaceous precursor fibers is also disclosed.
Rios; Orlando (Knoxville, TN), Tenhaeff; Wyatt Evan (Knoxville, TN), Daniel; Claus (Knoxville, TN), Dudney; Nancy Johnston (Knoxville, TN), Johs; Alexander (Knoxville, TN), Nunnery; Grady Alexander (Rock Hill, SC), Baker; Frederick Stanley (Kailua-Kona, HI)
13/ 567,275
August 6, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was made with government support under contract No. DE-AC05-00OR22725 awarded by the U.S. Department of Energy. The government has certain rights in this invention.