12/03/2021
New material paves the way for more powerful and safer batteries
In pursuit of batteries that deliver more power and operate more safely, researchers are working to replace the liquids commonly used in today’s lithium ion batteries with solid materials. Now, a research team from Brown University and the University of Maryland has developed a new material for use in solid-state batteries that’s derived from an unlikely source: trees.
In published in the journal Nature, the team demonstrates a solid ion conductor that combines copper with cellulose nanofibrils — polymer tubes derived from wood. The paper-thin material has an ion conductivity that is 10 to 100 times better than other polymer ion conductors, the researchers say. It could be used as either a solid battery electrolyte or as an ion-conducting binder for the cathode of an all-solid-state battery.
The researchers are hopeful that the new material could be a step toward making bringing solid state battery to the mass market.
By incorporating copper with one-dimensional cellulose nanofibrils, they demonstrated that the normally ion-insulating cellulose offers a speedier lithium-ion transport within the polymer chains.
~ this ion conductor achieved a record high ionic conductivity among all solid polymer electrolytes.
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New material paves the way for more powerful and safer batteries In pursuit of batteries that deliver more power and operate more safely, researchers ...