Composite electrode for flow cell, flow cell, and pile

Abstract

The present invention relates to the technical field of energy storage. Disclosed in the invention are a composite electrode for a flow cell, a flow cell, and a stack. The composite electrode comprises: a distribution layer, used to distribute an electrolyte; a reaction layer used to receive the electrolyte of the distribution layer and provide an electrochemical reaction site for the electrolyte; and a contact layer, used to reduce the contact resistance of the distribution layer so as to reduce an internal resistance of the flow cell. In the present invention, by means of providing a distribution layer, a reaction layer and a contact layer, an electrochemical reaction site and an electrolyte distribution site of a composite electrode can be effectively separated, the distribution layer being able to greatly reduce dead zones and channeling caused by uneven flow distribution, and the contact layer being able to greatly reduce the internal resistance of the flow cell. Meanwhile, the distribution layer and the reaction layer can be separately and specially designed, thus improving the output power and energy efficiency of a cell or a stack taking the present composite electrode as an anode and/or a cathode.

Dependencies are inferred from the claim text.