Chinese Academy of Sciences zinc-bromine flow battery research breakthrough or applied to the photovoltaic power plant

Chinese Academy of Sciences website recently revealed on the 3rd, the recent CAS CAS Dalian Institute of Chemical Physics team made new progress in the research of zinc-bromine flow battery electrode materials, the project was funded by the National Natural Science Foundation of China and other units. Through structural design, the research team developed a highly ordered mesoporous carbon cathode material. The energy efficiency of the assembled cells was over 80%, breaking through the bottleneck of low power density.

According to the Shanghai Securities News on March 4, zinc-bromine flow battery has the advantages of high theoretical energy density and low electrolyte cost, and has good application prospect in large-scale energy storage. In the case of domestic components, the cost is quite the same as that of lead-acid batteries, and the energy density is 3 times to 5 times that of lead-acid batteries. Zinc Bromide flow battery material breakthrough will help China's energy storage battery industry.

According to Dalian Institute of Physics and Chemistry research team, zinc-bromine flow battery energy density in significant advantages, but the power density is low. In order to improve the reaction rate of Br2 / Br-stacks and further increase the power density of zinc-bromine flow cells, the research team developed a highly ordered mesoporous carbon cathode material through structural design and applied it to zinc-bromine flow cells . The electrode material provided more active sites for the Br2 / Br- reaction and increased its reaction kinetic rate. At the same time, highly ordered pore structure can effectively reduce the diffusion resistance of bromine. The single cell assembled with it operates at a current density of 80mA / cm2 with the energy efficiency over 80%, breaking through the bottleneck of low power density and laying a good foundation for the development of high power density, low cost zinc-bromine flow battery .

Internationally, Zinc-Brine flow energy storage batteries are one of the mainstream energy storage technologies in the world. Not only successful application cases have been developed in developed countries such as the United States, Australia and Japan, but also in new energy grid-connected, distributed generation, grid auxiliary Services and other fields are also mature applications. The battery life of up to 20 years, the number of charge-discharge 30000 times more than the energy density of lead-acid batteries more than 3 times the cost of only 10% to 20% of lithium batteries. Zinc-bromine battery energy storage system can be applied wind power, photovoltaic power plants, communications base stations, new energy vehicle charging pile, financial enterprises.

Domestically, with the development of the energy Internet, energy storage as the basis for the development of the industry is increasingly valued by the market. Due to its significant advantages, zinc-bromine flow storage batteries have been vigorously developed by many units such as the Chinese Academy of Sciences and the listed companies. China's first zinc-bromine flow battery energy storage base has been built in Qinghai Haidong Science Park, is expected to break the monopoly of the United States, Japan and other countries. According to the agency's calculations, the global energy storage market will exceed 600 billion U.S. dollars in the next 10 years, and China's market will account for nearly one-third of the total investment. Zinc-bromine storage batteries and other batteries will have huge room for future development. A shares in the CLP Xinlong, Lubei Chemical and other listed companies, involving zinc-bromine flow battery-related businesses.

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