Composite bipolar plate for all-vanadium redox flow battery as well as preparation method and application of composite bipolar plate

• Main Authors: WU XIANFENG, LIU GUANGYU, YU QIUMING, ZHANG BING, ZHANG JIANGUO, CHEN XIAONA, LI SIDA
• Format: Patent
• Language: Chinese; English
• Published: 11.06.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention belongs to the field of flow energy storage batteries, and particularly relates to a composite bipolar plate for an all-vanadium flow battery as well as a preparation method and application. Graphene oxide is prepared by adopting a modified FENTON method and then reacts with the silane coupling agent to form modified graphite oxide, and the added compatilizer can react with the modified graphite oxide, so that the problems of compatibility and dispersion of a carbon-based material in resin are solved, and the problems of carbon-based conductivity and processing technology are balanced; continuous production of a hot pressing or extrusion process can be realized, the electrochemical performance of the bipolar plate is improved, the service life of the bipolar plate is prolonged, the cost of the bipolar plate is effectively reduced, large-scale practical application of the flow battery bipolar plate is promoted, and the technical value is important. 本发明属于液流储能电池领域，具体涉及一种全钒液流电池用复合材料双极板及制备方法和应用。本发明采用