| 摘要 |
The improved method of the present invention comprises mixing zinc particles comprising zinc metal and/or zinc oxide with a concentration of bonding agent sufficient to bond the particles together when subject to mechanical roller pressure so as to form a continuous film but insufficient to totally encapsulate the particles, treating the resultant mixture to form a freely flowable doctorable powder of mesh size below about 40 mesh, doctoring the powder to a desired thickness on a conveyor, rolling the doctored powder in a nip between pressure rollers to form a continuous film, combining the film with a current collector and then dividing the resultant film into zinc electrodes of predetermined size. In carrying out the method, the current collector may be passed into the pressure nip along with the doctored powder during formation of the film. If desired, the current collector can be placed on the layer of doctored powder and then a second layer of the powder can be disposed on the free side of the current collector, and then doctored before this composite passes through the pressure nip to form the desired product. In another embodiment, two of the rolled films can be independently formed and then the current collector can be placed therebetween, and the resultant composite can then be passed through a pressure nip to unify the composite. The electrode is thus formed in a relatively simple, rapid, flexible and efficient manner. |
