Carbon-based electrodes containing molecular sieve

摘要

Carbon-based electrodes such as for incorporation into ultracapacitors or other high power density energy storage devices, include activated carbon, carbon black, binder and at least one molecular sieve material. The molecular sieve component can adsorb and trap water, which can facilitate the use of the device at higher voltage, such as greater than 3V. The molecular sieve material may be incorporated into the carbon-based electrodes or formed as a layer over a carbon-based electrode surface.

主权项

1. A carbon-based electrode comprising:
a current collector having opposing first and second major surfaces; a first conductive layer disposed adjacent to the first major surface; a second conductive layer disposed adjacent to the second major surface; and a first carbon-based layer and a second carbon-based layer each comprising activated carbon, carbon black and binder disposed adjacent to respective ones of the first and second conductive layers; and (i) a layer comprising at least one molecular sieve material and a binder disposed adjacent to at least a portion of at least one of the carbon-based layers, or (ii) at least one molecular sieve material incorporated throughout at least one of the carbon-based layers, or both (i) and (ii).