全钒液流电池隔膜的制备与性能

Preparation and Properties of Separation Membranes for Vanadium Redox Flow Battery

全钒液流电池作为一种电化学储能装置在电网调峰、山区供电、电动车充电电源、应急电源等方面具有很广阔的应用前景。隔膜是全钒液流电池的关键组件之一,其结构和性能决定电池的效能。隔膜的离子传导率和钒离子的渗透率分别影响电池的电压效率和电流效率。隔膜的化学稳定性决定电池的长期运行的稳定性和使用寿命。本文根据隔膜的类别不同,分别阐述了含氟离子膜、非氟离子膜及多孔膜的制备与上述性能的关系,并展望了隔膜的发展方向。

All vanadium redox flow battery （VRB） is accepted as a electrochemical energy storage device for the load levelling and peak shaving of the grid, the power supply for remote area, the charging power source for the electric vehicles, and the uninterruptible power supply. As one of the key components in VRB system, the membrane, in the terms of its structures and properties, is responsible for the efficiencies of the VRB. The ion conductivity and vanadium ions permeation of the membrane affect the voltage efficiency and coulombic efficiency of the battery, respectively. The chemical stability of the membrane determines the tong-term performance and lifetime of the battery. This review mainly summarizes the preparation and properties of the fluorinated ionic exchange membranes, the non-fluorinated ionic exchange membranes, and the pore membranes. The promising research strategies are outlook.