Water electrolysis is a process that uses electricity to decompose water into oxygen and hydrogen. There are several types of ion exchange membrane can be used, anion exchange membrane, proton exchange membrane and bipolar membrane for water electrolysis. In this study, water electrolysis technology can produce high-efficiency, high-pressure, high-purity hydrogen based on waste nutrient solution electrolyte using a pore-filled anion-exchange membranes. Anion exchange membrane water electrolysis (AEMWE) has the advantage of lower cost than proton exchange membrane water electrolysis since non-precious electrocatalysts could sufficiently complete AEMWE reactions. A pore-filled anion exchange composite membrane with different content of cross-linkers was performed by mixing an electrolyte having a chemically stable anion exchange group and a monomer for polymerization into a polymer main chain and filling it with a porous polyethylene (PE) substrate. The pore-filling reinforced composite membranes have been shown good electrochemical properties (e,g., high ion exchange capacity, high mechanical strength, lower equivalent weight, and lower areal resistance), in particular, alkali stability is due to the structural stability of the ion exchange site and the properties of the highly hydrophobic PE. PE substrates have been pretreatment for making hydrophobic to hydrophilic. The conductivity and areal specific resistance were measured by in-plane cell and through-plane cell at 80 ℃ and at room temperature, respectively. Characterization in terms of ionic conductivity, ion exchange capacity, water uptake, swelling ratio, equivalent weight, and mechanical strength were investigated.

Acknowledgments

This work was carried out in part with the support of "Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ016253)" Rural Development Administration, Republic of Korea and by 2021 Green Convergence Professional Manpower Training Program of the Korea Environmental Industry and Technology Institute funded by the Ministry of Environment..