According to the report of Science and Technology Daily, with the continuous expansion of renewable energy development and utilization and the rapid rise of the smart grid industry, the importance of energy storage technology has become increasingly prominent.
It is reported that the research team led by Professor Cui Wei of Stanford University in the United States introduced a manganese-hydrogen battery that can be recharged more than 10,000 times, and can achieve more than 10 years of stability. The result was published in "Natural Energy". The results show that the manganese hydrogen battery has very excellent electrochemical performance, and the battery is easily scaled for large-scale energy storage.
According to the first author of the study, Dr. Chen Wei of the School of Materials Science and Engineering of Stanford University in the United States, the manganese hydrogen battery they invented uses a high surface area carbon as the positive current collector and a manganese sulfate soluble in water as the electrolyte. Hydrogen controlled by the catalyst serves as a negative electrode. The battery is different from any previous water-based battery in terms of design, charge-discharge principle, test method and performance.
The results show that the manganese hydrogen battery has very good electrochemical performance, such as a stable discharge voltage of 1.3 volts, a high rate of discharge current 100 mA/cm2, a stable cycle of more than 10,000 cycles, and a high mass energy density of 139 Wh/kg and Volume energy density 210Wh/L. Moreover, the battery is easily scaled up for large-scale energy storage.
Large-scale energy storage is the core technology for achieving the universal application of renewable energy. Existing large-scale energy storage technologies (such as pumped energy storage and compressed air energy storage) and various energy storage batteries (such as lithium-ion batteries, sodium-sulfur batteries, and flow batteries) all have different problems, and they are far from satisfying The requirements of low-cost energy storage, safety, high energy density, and high stability of scale storage. Cui Wei said: "The invention of manganese hydrogen battery will have an important impact on the pattern of large-scale energy storage, and further alleviate the serious carbon emissions and air pollution caused by traditional fossil energy."
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