Study on Anhydrous Proton Conduction in Imidazole–Collagen Composite

Recently, hydrogen-fuel cells have attracted attention as an environmentally friendly next-generation energy device. Very recently, biomaterials such collagen and chitin realized proton conductivity via water bridges under humidity condition, the fabrication of fuel using is possible. However, cell electrolyte has demerits, complication instruments operating temperature limit. Therefore, electrolytes without humidified conditions are desired. In present work, we synthesized anhydrous conductor imidazole collagen, which biomaterials, investigated in imidazole–collagen composites. It was found that composite a high-proton above 10−3 S/m 200 °C condition compared with other bio-proton conductors hydroxyapatite–collagen composite. Moreover, motional narrowing 1H-NMR line width reveals region from 120 to °C. addition, DTA measurement impedance analyses reveal film undergoes phase transition at Furthermore, strongly depends on n, concentration per molecule takes maximum n = 2.0. perpendicular fiber approximately ten times higher than parallel fiber. From these results, it can be deduced caused by breaking rearranging hydrogen bonds side chain formed between fibers.