Non-sintered electrode of nickel hydroxide in a binder of cellulose compound and styrene-acrylate co-polymer for an electrochemical generator
AssigneeSaft
InventorsPatrick Bernard, Lionel Goubault
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Abstract
A non-sintered electrode containing a two-dimensional conductive support covered in a layer containing an electrochemically active material and a binder which is a mixture of a styrene-acrylate copolymer and a cellulose compound chosen from methylcellulose, carboxymethylcellulose, hydroxypropylmethylcellulose, hydroxypropylcellulose and hydroxyethylcellulose. The proportion of the styrene-acrylate copolymer is less than 4% by weight of the active layer.
Claims18
A secondary electrochemical cell with an alkaline electrolyte, the cell containing a positive non-sintered electrode comprising a substantially flat plane form two-dimensional conductive support covered in a layer containing nickel hydroxide and a binder, wherein said binder is a mixture of a cellulose compound and a styrene-acrylate copolymer which is a combination of elementary styrene units (—CH2CHC6H5—), and of elementary acrylic ester or acrylate units (—CH2CHCOOR—), wherein said two dimensional conductive support has a thickness of between 10−2 mm and 10−1 mm.
Dependencies are inferred from the claim text.