DEALLOYED NANOPOROUS METALS AS UNIQUE ELECTRODES FOR SUPERCAPACITOR APPLICATIONS

摘要

The global sustainable energy strategy poses grand challenges and opportunities to materials community for the development of new technologies and materials, used for various green energy technologies such as supercapacitors. The rapid advances in nanotechnology, advanced instrumentation & measurement methods, and modeling & simulation in recent years prompt new concepts for rationally designing new materials with integrated functions at molecular level. It is very well known that the current supercapacitor technology is mainly based on high surface area carbon materials, such as porous carbon, carbon nanotubes or more recently graphene-based nanomaterials or nanocomposites. While exhibiting quite promising performance at an acceptable cost, the great demand to further enhance their power and energy densities has to rely on the simultaneous realization of several key structural parameters such as the amount of each individual electrode component, open accessibility by the electrolyte, and the interfacial structure between electrochemically active materials and current collector.