Flow battery stack or single cell, membrane-electrode assembly and composite electrode structure thereof

Abstract

Disclosed in the present disclosure is a flow battery stack or single cell, as well as a membrane-electrode assembly and a composite electrode structure thereof. The composite electrode is formed by compounding electrode materials which are non-uniform in direction and are of various materials into a thin asymmetric structure, using graphite felt and/or graphite fiber-based carbon paper as a foundation, and coating the outer surface layer on at least one side with a graphite powder layer, so that the specific surface area of the electrode reaction is increased, the thickness of the electrode is reduced, and the electrode activation and energy conversion efficiency is improved. The membrane-electrode assembly is configured to be an integrated packaging composite structure. Different packaging structures are designed for composite electrodes with different thicknesses, the mechanical strength is high, and the assembly performance is stable.

Dependencies are inferred from the claim text.