Jung Ho-Young, Moon Geon-O, Jung Seunghun, Kim Hee Tak, Kim Sang-Chai, Roh Sung-Hee
J Nanosci Nanotechnol. 2017 Apr;17(4):2563-566. doi: 10.1166/jnn.2017.13371.
Polymer electrolyte membrane (PEM) confirms the life span of vanadium redox flow battery (VRFB). Products from Dupont, Nafion membrane, is mainly used for PEM in VRFB. However, permeation of vanadium ion occurs because of Nafion’s high permeability. Therefore, the efficiency of VRFB decreases and the prices becomes higher, which hinders VRFB’s commercialization. In order to solve this problem, poly(phenylene oxide) (PPO) is sulfonated for the preparation of low-priced hydrocarbon polymer electrolyte membrane. sPPO membrane is characterized by fundamental properties and VRFB cell test.
聚合物电解质膜（PEM）决定了全钒氧化还原液流电池（VRFB）的使用寿命。来自杜邦公司的产品Nafion膜主要用于VRFB的PEM。然而，由于Nafion的高渗透性，钒离子会发生渗透。因此，VRFB的效率降低且价格升高，这阻碍了VRFB的商业化。为了解决这个问题，对聚苯醚（PPO）进行磺化以制备低价的烃类聚合物电解质膜。通过基本性能和VRFB电池测试对磺化聚苯醚（sPPO）膜进行了表征。
