| 摘要 |
PURPOSE:To uniformly disperse a carbon material on the surface of manganese dioxide grains for a sufficient electrode reaction by mixing and dispersing manganese dioxide and the carbon material with a vapor phase dispersing mixer. CONSTITUTION:Manganese dioxide 1 and carbon black 2 serving as a carbon material are mixed it the ratio of 1wt.% for the carbon material against the manganese dioxide weight, the mixture is put into a vapor phase dispersing mixer rotated at the revolving speed of 1,500r.p.m., and the mixer is operated for 3min. The carbon material of 3wt.% against the manganese dioxide weight is added, the mixture is put into a separate vapor phase dispersing mixer capable of being rotated at a high speed, and the mixer is operated at the revolving speed of 6,000r.p.m. for 2min to obtain manganese dioxide with carbon black for a positive electrode mix. When a manganese dioxide-lithium battery is constituted with this positive electrode mix, the initial impedance characteristic can be improved, the battery characteristic is stabilized, and the high-load discharge characteristic can be improved. |
