Automated folding calender for electrode manufacturing

A method for manufacturing an electrode, comprising;

• feeding an electrode mixture to a first conveyor belt, wherein the electrode mixture includes electrode active materials, conductive carbons and polymeric binders, the first conveyor belt moves the electrode mixture along a first belt-moving direction, and the electrode mixture is free of N-methyl pyrrolidone (NMP), and the polymeric binders includes a polytetrafluoroethylene (PTFE) binder;
• transferring the electrode mixture film from the first conveyor belt to a second conveyor belt, wherein the second conveyor belt moves the electrode mixture along a second longitudinal direction, the first belt-moving direction is oblique angled relative to the second longitudinal direction, wherein a pair of side rollers on the second conveyor belt fold the electrode mixture at a predetermined oblique angle when the electrode mixture film is transferred from the first conveyor belt to the second conveyor belt, with the support of a pair of guide rollers which contact a top surface of the folded electrode mixture, wherein a distance between the pair of side rollers on the second conveyor belt, the diameter of the pair of guide rollers and position of the guide rollers control a width of folded electrode mixture film;
• after folding, hot pressing the folded electrode mixture film to fiberize the PTFE binder along the second belt-moving direction.