Negative electrode for asymmetric supercapacitor having a positive electrode based on nickel hydroxide and an alkaline electrolyte and method for making same
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United States of America Patent
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Nov 22, 2016
Grant Date -
Nov 29, 2012
app pub date -
May 25, 2012
filing date -
May 27, 2011
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Abstract
The object of the invention is an electrode comprising a continuous current collector (1) wherein 50% or more of the surface of said collector has a roughness Ra1 comprised between 0.8 and 15 μm, measured for a base length comprised between 2 and 200 μm, said collector being coated with a mixture (2) comprising active carbon having a specific surface area greater than or equal to 500 m2/g and a binder comprising a mixture of at least one cellulosic compound and at least one styrenic copolymer. The object of the invention is also an asymmetric supercapacitor comprising at least one electrode according to the invention. The invention also relates to a method for making a carbon electrode for an asymmetric supercapacitor.
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