| 摘要 |
PROBLEM TO BE SOLVED: To facilitate manufacture, increase a surface area and reduce degradation of conductivity despite of extension by dispersing and cooling a conductive material in a polyvinyl alcohol solution, and freezing water so as to obtain a fine three-dimensional mesh structure. SOLUTION: In a conductive porous material having a fine three-dimensional mesh structure, a diameter of a pore formed in the three-dimensional mesh structure is 0.5-5μm. In manufacturing the conductive porous material having such a fine three-dimensional mesh structure, a conductive filler is added and dispersed into a polyvinyl alcohol solution, and then, is cast into a mold, followed by quenching. With this treatment, water contained in the solution is frozen to produce segregation, thereby forming fine pores. Subsequently, the segregation is heated above a freezing point for thawing. The freezing/ thawing treatment is repeated, so that the pore is grown and gelation proceeds, thereby forming a mesh-like structure. Consequently, almost all strain developed can be absorbed by deformation of the structure even if machining is carried out by uniaxial extension thus reducing degradation of conductivity.
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