NOVELTY - An ion gel aggregate (10) is formed by aggregating primary ion gel particles (12) and secondary ion gel particles (14). The inclusion (16) is chemically coupled to each of the primary ion gel particles and secondary ion gel particles between primary adjacent ion gel particles and secondary ion gel particles. The inclusion contains reaction product of primary polymer contained in the primary ion gel particles, and secondary polymer contained in the secondary ion gel particles.    USE - Ion gel aggregate is used as electrolyte for fuel cell, secondary battery, capacitor and dye-sensitized solar cell.    ADVANTAGE - The ionic liquid contained in the ion gel particles are fully maintained, thus prevents migration of ionic liquid to substance during contacting ion gel aggregate with substance having high affinity to ionic liquid. The fuel cell using the ion gel aggregate-containing electrolyte has excellent ion conductivity and durability. The ion gel aggregate containing ion gel particles has excellent plasticity, thus it is easy to set to desired shape.    DETAILED DESCRIPTION - An ion gel aggregate is formed by aggregating primary ion gel particles containing compatible compound of primary polymer and an ionic liquid, and secondary ion gel particles containing compatible compound of secondary polymer and ionic liquid. The inclusion is chemically coupled to each of the primary ion gel particles and secondary ion gel particles between the primary adjacent ion gel particles and secondary ion gel particles. The inclusion contains reaction product of primary polymer contained in the primary ion gel particles, and secondary polymer contained in the secondary ion gel particles. An INDEPENDENT CLAIM is included for manufacture of ion gel aggregate, which involves mixing primary polymer and ionic liquid, preparing mixed solution (a), adding solvent which generates phase-separation with respect to the ionic liquid, preparing mixed solution (b) using mixed solution (a), reacting primary polymer and ionic liquid, obtaining primary ion gel particle, mixing secondary polymer and ionic liquid, preparing mixed solution (c), adding ionic liquid which generates phase-separation with respect to ionic liquid, preparing mixed solution (d) which generates secondary emulsion, using mixed solution (c), reacting secondary polymer and ionic liquid, obtaining secondary ion gel particles, reacting primary polymer contained in the primary ion gel particles, and secondary polymer contained in the secondary ion gel particles in solvent, forming inclusion and obtaining ion gel aggregate.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of ion gel aggregate.    Ion gel aggregate (10)    Primary ion gel particles (12)    Secondary ion gel particles (14)    Inclusion (16)