The technology of sulfur iron flow battery has been completed from laboratory to engineering applica

Recently, the 5kW/20kWh sulfur iron liquid flow energy storage device, jointly developed by State Grid Hunan Electric Power Research Institute, Central South University, and Zhonghe Energy Storage, has been officially connected to the grid and put into operation at the State Grid Hunan Energy Storage Demonstration Project Base. The operation of this project marks a crucial leap from laboratory to engineering application of sulfur iron flow battery technology, opening up a new path for the development of long-term energy storage technology.

【 Patent 】 Tianke Heda | High purity semi insulating silicon carbide single crystal process

The existing preparation process of high-purity semi insulating silicon carbide crystals involves the elimination of impurities in the vacuum chamber before growth, as well as the use of atmospheres such as H2, Cl2, CH4, H2S to remove nitrogen, boron, and other impurities during the growth process. By using a molecular pump for long-term extreme vacuum pumping at room temperature, the back bottom vacuum can reach 10-5 Pa, which can effectively remove free nitrogen gas. However, there are still some residual impurities, such as those adsorbed on porous insulation felt and graphite parts, which are difficult to remove. How to find a suitable way to better remove impurities from the growth chamber and improve the crystal quality of the grown silicon carbide?

Energy storage in 2025: Coexistence of reshuffle and rebirth

The energy storage industry has entered a period of adjustment.