| 초록 |
To prepare membranes shows high performance and low permeability of vanadium ion for vanadium redox flow battery (VRFB) application, poly (arylene ether ketone) anion exchange membranes with imidazolium group(PAEK-API). During the synthesis of membranes, content of imidazolium group is changed with various ratio. The chemical structure of PAEK-API is analyzed by NMR, and the characteristic of prepared membranes are compared with that of Nafion® 117. As a result, as the content of imidazolium group is increased, the efficiency is improved. All of PAEK-API membrane showed higher coulombic efficiency than Nafion® 117 membrane. Especially for PAEK-API 2.0, it showed higher coulombic, voltage, energy efficiency than Nafion® 117. Also, all of prepared membrane showed lower vanadium ion permeability than that of Nafion® 117 membranes. The result indicate PAEK-API can be alternative for Nafion® 117 in VRFB application. |
