Ultrapure synthetic carbon materials
AssigneeBASF SE
InventorsAaron M. Feaver, Henry R. Costantino, William D. Scott
Life of this patent
Estimating the term…
Abstract
The present application is generally directed to ultrapure synthetic carbon materials having both high surface area and high porosity, ultrapure polymer gels and devices containing the same. The disclosed ultrapure synthetic carbon materials find utility in any number of devices, for example, in electric double layer capacitance devices and batteries. Methods for making ultrapure synthetic carbon materials and ultrapure polymer gels are also disclosed.
Claims21
1-60. (canceled)
A carbon material comprising a BET specific surface area of at least 500 m2/g and an impurity content of less than 500 ppm of elements having atomic numbers ranging from 11 to 92 as measured by proton induced x-ray emission, wherein the impurity content comprises less than 100 ppm potassium, less than 20 ppm calcium, less than 20 ppm nickel, less than 20 ppm copper, less than 10 ppm iron and less than 5 ppm zinc.
Dependencies are inferred from the claim text.