Ultrapure synthetic carbon materials
First Claim
1. An ultrapure synthetic carbon material comprising a BET specific surface area of at least 500 m2/g and a total 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 carbon material comprises at least 85% carbon by weight as measured by combustion analysis and proton induced x-ray emission.
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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.
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35 Claims
- 1. An ultrapure synthetic carbon material comprising a BET specific surface area of at least 500 m2/g and a total 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 carbon material comprises at least 85% carbon by weight as measured by combustion analysis and proton induced x-ray emission.
Specification