| 摘要 |
PURPOSE: A method for preparing a cathode and an energy store device containing the cathode are provided, to increase the contact area of carbon and sulfur with maintaining the uniform contact carbons, thereby increasing the reaction velocity in discharging. CONSTITUTION: The method comprises the steps of dispersing carbon and a binder into a solvent to prepare a slurry; coating the obtained slurry on a current collector and drying it to prepare the carbon matrix on the current collector; dipping the current collector into a solution containing sulfur or a sulfur melt to infiltrate sulfur into the carbon matrix; and drying the sulfur-infiltrated carbon matrix. Preferably the binder is at least one selected from the group consisting of PVdF, PVdF-HFP copolymer, butadiene-styrene copolymer, acrylonitrile-butadiene-styrene copolymer polytetrafluoroethylene, CMC, polyethylene and polypropylene. The current collector is at least one selected from the group consisting of aluminum, etched aluminum, nickel, copper and stainless steel. The solvent is at least one selected from the group consisting of water, N-methylpyrrolidone, acetonitrile, ethanol, methanol and isopropyl alcohol. |
