| abstract |
The invention relates to a preparation process of a long-lived negative pole piece and a capacitor battery using the negative pole piece. The preparation process of the long-lived negative pole piece comprises the following steps: mixing materials: mixing fast-storage lithium carbon and a binder, and adding a solvent; squeezing, squeezing the mixture by a roll squeezer to obtain a platy pole piece with a certain thickness; coating: mixing a conductive agent into a sizing agent, and coating the sizing agent on a negative current collector body; attaching the piece, squeezing and attaching the platy pole piece on negative current collector body coated with the sizing agent; and drying, grinding, cropping, and vacuum drying to prepare the negative pole piece. The invention adopts the process that the platy pole piece is firstly squeezed and then is attached on the negative current collector body, so that the negative pole piece has higher compaction density and longer cycle life. The organic hybrid super-capacitor battery prepared by the invention has the characteristics of high energy density (which can reach 45-80Wh/Kg) and high power density (which is higher than 4500W/Kg), can bewidely applicable to the fields such as electric vehicles, power tools, solar energy storage, wind energy storage, portable appliances and the like. |