Hybrid electrode and surface-mediated cell-based super-hybrid energy storage device containing same

Abstract

The present invention provides a multi-component hybrid electrode for use in an electrochemical super-hybrid energy storage device. The hybrid electrode contains at least a current collector, at least an intercalation electrode active material storing lithium inside interior or bulk thereof, and at least an intercalation-free electrode active material having a specific surface area no less than 100 m2/g and storing lithium on a surface thereof, wherein the intercalation electrode active material and the intercalation-free electrode active material are in electronic contact with the current collector. The resulting super-hybrid cell exhibits exceptional high power and high energy density, and long-term cycling stability that cannot be achieved with conventional supercapacitors, lithium-ion capacitors, lithium-ion batteries, and lithium metal secondary batteries.

Dependencies are inferred from the claim text.