Recently, there has also been much attention towards ion-exchange membranes (IEMs) for the applications in the energy generation and storage systems such as reverse electrodialysis (RED) and redox flow batteries (RFBs). IEMs are one of the key components dominating the overall performances of both the RED and RFB processes. Low ion transport resistance through membrane, excellent chemical and mechanical stability, high permselectivity, and low cross-over rate of undesirable components are required for the successful applications of the IEMs in the processes. In this work, we have prepared high performance pore-filled IEMs for successful RED and RFB applications. (this work was supported by the project, No. 10047796)