Bilayer battery binder structure

A method for forming an electrode comprising:

• applying a mixed binder slurry, containing active material particles, a conductive agent, and a carboxymethyl cellulose and styrene-butadiene binder mixture, onto a metal foil current collector;
• drying the mixed binder slurry to form a non-porous layer adhered to the metal foil current collector;
• applying a carboxymethyl cellulose slurry atop the non-porous layer;
• and
• drying the carboxymethyl cellulose slurry to form an electrode.

A negative electrode comprising:

• a current collector foil;
• a carboxymethyl cellulose and styrene-butadiene rubber binder matrix containing active material;
• and
• a styrene-butadiene rubber layer sandwiched between and laminated with the current collector foil and carboxymethyl cellulose and styrene-butadiene rubber binder matrix.