The science of conductive interfaces between active materials in batteries and supercapacitors is still evolving as new materials and storage principles are developed. Frank Lev gives his insights into the causes of internal resistance between these interfaces and explains their effect on the power of storage technologies.
My first introduction to conductive interfaces occurred in 1992 when I witnessed a bipolar supercapacitor stack assembly. A large-bore air cylinder exerted a tremendous force on the pile comprised of carbon electrodes, separators and stainless steel current collectors to create an assembly with high electric . . .
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