Nanotube-based high energy material and method
AssigneeUniversity of North Carolina - Chapel Hill
InventorsOtto Z. Zhou, Bo Gao
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Abstract
A carbon-based material containing an allotrope of carbon, such as single-walled carbon nanotubes, is capable of accepting and intercalated alkali metal. The material exhibits a reversible capacity ranging from approximately 650 mAh/g-1,000 mAh/g. The high capacity of the material makes it attractive for a number of applications, such as a battery electrode material. A method of producing a single-walled carbon nanotube material includes purifying an as-recovered nanotube material, and depositing the purified material onto a conductive substrate. The coated substrate is incorporated into an electrochemical cell, an its ability to accept intercalated materials, such as an alkali metal (e.g.—lithium) is measured.
Claims15
A carbon-based material comprising nanotubes with an intercalated alkali metal, said material having a reversible capacity greater than 900 mAh/g.
A material comprising single-walled carbon nanotubes and intercalated lithium metal, said material having a reversible capacity greater than 550 mAh/g.
Dependencies are inferred from the claim text.