PASADENA, California, Nov. 22 -- The California Institute of Technology issued the following news: Caltech researchers from campus and JPL have collaborated to devise a method for coating lithium-ion battery cathodes with graphene, extending the life and performance of these widely used rechargeable batteries. These efforts have led to a promising discovery that may improve lithium-ion battery performance and reduce reliance on cobalt, an element frequently used in lithium-ion batteries that i  more