The invention of a cycle rechargeable over 10,000 times manganese hydrogen battery

With the increasing scale of renewable energy development and utilization and the rapid rise of smart grid industry, the importance of energy storage technology has become increasingly prominent. The research team led by Professor Cuiyi of Stanford University introduced a manganese hydrogen battery that can be recharged more than 10,000 times to achieve stable performance for more than 10 years. This result was published in Nature Energy.

According to Dr. Chenwei of the School of Materials Science and Engineering at Stanford University, the manganese hydrogen battery they invented used Gaobiao's area of carbon as a positive collector fluid and soluble in water. Manganese sulfate is used as an electrolyte, and hydrogen controlled by a catalyst is used as a negative electrode. The battery is different from any previous water system battery in terms of design, charging and discharging principle, test method and performance.

The results show that manganese hydrogen cells have very excellent electrochemical properties, such as a stable discharge voltage of 1.3 volts, a high-magnification discharge current of 100 mA/cm2, a stable cycle of more than 10,000 times, and a higher mass energy density of 139 Wh / kg and volume energy density of 210 Wh/L. Moreover, the battery is easily amplified for large-scale energy storage.

Large-scale energy storage is the core technology to achieve universal application of renewable energy. There are different problems with existing large-scale energy storage technologies(such as pumping energy storage, compressed air energy storage) and various energy storage batteries(such as lithium ion batteries, sodium sulfur batteries, liquid-flow batteries). It is far from satisfying the requirements of cheap, safe, high energy density and high stability of large-scale energy storage. "The invention of manganese hydrogen batteries will have an important impact on the pattern of large-scale energy storage and will further alleviate the serious carbon emissions and air pollution caused by traditional fossil energy sources," Mr Cuiyi said. "

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