ZSM ‐5 zeolite incorporated flow battery membranes with regulated pore channels for high proton conduction

AbstractFast proton conduction plays an essential role in ion conductive membranes (ICMs) for energy conversion and storage technologies, but the demand for low reactive species permeation always limits further enhancement in proton transport rate. Herein, an ICM incorporating ZSM-5 zeolite with optimized physicochemical property of pore channels was developed to achieve highly conductive ion transport via regulating the silicon-aluminum atomic (Si/Al) ratio of ZSM-5. Benefiting from the regulation of pore channels of zeolites, the proton conductivity of the pristine membrane was remarkably improved to 1.7-fold. As expected, the optimized membrane exhibited outstanding voltage efficiency (VE) of 85.7% and energy efficiency (EE) of 85.1% at 120  mA/cm2, which is considerably better than pure polymer membrane (VE of 80.5% and EE of 79.4%) and commercial Nafion 212 (VE of 81.3% and EE of 77.4%) membrane, respectively.

Source: AIChE Journal - February 3, 2024 Category: Science Authors: Yekai Cai, Shuhao Lin, Yu Xia, Qingming Hou, Yuqin Lu, Hongyan Cao, Yixing Wang, Kang Huang, Zhi Xu Tags: RESEARCH ARTICLE Source Type: research