Measuring method of longitudinal resistance value of carbon felt electrode material for flow battery

Abstract

The invention discloses a method for measuring a longitudinal resistance value of a carbon felt electrode material of a flow cell and relates to the technique for measuring the resistance of the carbon felt electrode material of the flow cell. According to the method for measuring the longitudinal resistance value of the carbon felt electrode material of the flow cell, the carbon felt electrode material, to be measured, of the flow cell is placed on an insulating spring support, a weight is further placed on the carbon felt electrode material, on the spring support, of the flow cell, a wire is clamped between the carbon felt electrode material of the flow cell and the weight, another wire is clamped between the carbon felt electrode material of the flow cell and the spring support, the other ends of the two wires are connected to a resistance value gauge, and then the longitudinal resistance value of the carbon felt electrode material can be read directly on the resistance value gauge. The method for measuring the longitudinal resistance value of the carbon felt electrode material of the flow cell is simple and reliable, the longitudinal resistance value of a carbon felt electrode can be measured accurately, and basic data are provided for assembling of the flow cell and preparation of the carbon felt electrode.

Description

technical field [0001] The invention relates to the storage battery production technology, in particular to the measurement technology of the resistance of the carbon felt electrode material used in the liquid flow battery. Background technique [0002] The redox flow battery has the advantages of good current conversion capability, flexible structure design, reasonable cost, and easy operation. It is a new type of green secondary battery suitable for large-scale energy storage. Different from ordinary electrochemical batteries, the electrode material of the flow battery does not participate in the electrode reaction. The function of the electrode is to provide a place for the redox reaction to occur for the positive and negative ion pairs and provide a channel for transporting electrons. Therefore, the electrode material is the key to determine the flow The core component of battery energy efficiency. [0003] At present, commercial flow batteries generally use PAN carbon ...

AI Technical Summary

Problems solved by technology

[0004] Since the felt body has a certain thickness, and the preparation process conditions have a great influence on its transverse and longitudinal carbon fibers, the carbon felt electrode material will produce a certain internal resistance in the flow battery, thereby affecting the efficiency of the flow battery

At present, there is no scientifically rigorous, simple and reliable method for measuring the resistance of carbon felt electrode materials.

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