| 摘要 |
PROBLEM TO BE SOLVED: To improve heat resistance, have characteristics not impeding fineness and conductance of an electrolyte capable of preventing penetration of particles, and further enhance mechanical strength without insoluble and reactive characteristics with respect to the electrolyte by a method wherein cellulose of a fine fiber reticular structure is used as a separator. SOLUTION: Cellulose is employed as a separator. As such cellulose, one having a fine fiber reticular structure is preferable. As such ultra-fine cellulose microfibril, for example, bacteria cellulose produced by an acetobacter is listed. A structure body composed of bacteria cellulose has fineness and mechanical strength. Further, since bacteria cellulose is cellulose with high purity, it is chemically insoluble for an electrolyte, the instant prevention of conductance can be lowered. |
