Patent ID: 8488300
Filing Date: 2013-07-16
Classification: H01G,Y02E

Abstract:
1. A supercapacitor comprising: a first electrode and a second electrode spaced from the first electrode, each of the first and the second electrodes comprising a carbon nanotube structure and an electrically conductive polymer layer, the carbon nanotube structure comprising a plurality of carbon nanotubes disorderly oriented, and a plurality of micropores defined between adjacent two of the carbon nanotubes, wherein the electrically conductive polymer layer coats surfaces of the plurality of carbon nanotubes; and a solid-state polymer electrolyte, wherein the first electrode and the second electrode are immersed in the solid-state polymer electrolyte, and the solid-state polymer electrolyte is a sulfuric acid polyvinyl alcohol gel electrolyte consisting of 44.9 wt % sulfuric acid, 45.8 wt % poly vinyl alcohol, and 9.3 wt % water.