초록 ▼

The present invention relates to lignocellulosic-based carbon-containing double layer energy storage devices having improved electrical power densities. In particular, the invention provides a double layer energy storage cell comprising a pair of electrodes, at least one of which is a carbon paste e

The present invention relates to lignocellulosic-based carbon-containing double layer energy storage devices having improved electrical power densities. In particular, the invention provides a double layer energy storage cell comprising a pair of electrodes, at least one of which is a carbon paste electrode, a porous ionically conductive separator, and an ion insulating connector, the improvement wherein said carbon paste electrode includes an activated linocellulosic-based carbon having a pore volume of greater than about 0.45 cc/g, a median pore width of 2.0 to 50.0 nm, a specific surface area of greater than about 500 m.sup.2 /g, and a mesopore content, based on the total particle volume of the activated carbon, of greater than about 75%.

대표청구항 ▼

[ What is claimed is:] [1.] A double layer energy storage cell with improved power density, said cell comprising a pair of electrodes wherein at least one of said electrodes being a carbon paste electrode, a porous ionically conductive separator, and an ion insulating connector, wherein said carbon

[ What is claimed is:] [1.] A double layer energy storage cell with improved power density, said cell comprising a pair of electrodes wherein at least one of said electrodes being a carbon paste electrode, a porous ionically conductive separator, and an ion insulating connector, wherein said carbon paste electrode comprises an activated lignocellulosic-based carbon having a pore volume of greater than about 0.45 cc/g, a median pore width of 2.0 to 50.0 nm, a specific surface area of greater than about 500 m.sup.2 /g, and a mesopore content, based on the total particle volume of the activated carbon, of greater than about 75%.