White Graphene Helps Batteries Keep Their Cool in High Temperatures
While this blog has devoted a fair amount of attention to the use of nanomaterials to improve the charge capacity of electrodes in Li-ion batteries, mentions of research into the use of nanomaterials for electrolytes and separators has been more scarce on these pages. Nonetheless, a lot of research is going on with the aim of improving the thermal stability of Li-ion batteries’ electrolytes and separators.
Now, researchers at Rice University are combining their work on improving the thermal stability of electrolytes with research into separators made from a new material: hexagonal boron nitride. In research described in the journal Advanced Energy Materials, the researchers were able to produce a Li-ion battery that operated for more than a month at temperatures as high as 150 degrees Celsius (302 °F) with very little loss of efficiency.