North Polytechnic professor made new progress in new aluminum secondary battery system

Recently, the internationally renowned academic journal EnergyStorageMaterials (2017, 6:9-17) published the latest research results of the research team of Prof. Wu Feng of the School of Materials Science and Technology of Beijing Institute of Technology in the research of new aluminum secondary battery system. The results provide a theoretical basis for the further development of a new high-performance secondary battery system in theory and experiments.

As an efficient and recyclable energy conversion and storage method, a secondary battery (ie, a rechargeable battery) is an important technical means for comprehensively alleviating energy, resources, and environmental issues, and has become a photovoltaic energy storage, electric vehicle, and energy storage. The key links of major applications such as peaking power stations and uninterruptible power supplies are also the main power sources for portable electronic devices today. They are listed as key support and priority areas for development in major developed countries. In particular, advanced secondary batteries with high specific energy and high specific power are the focus of attention in the international frontier research field. How to dramatically increase the energy density and power density of secondary batteries, better solve the safety of batteries, further reduce the cost of batteries, and regenerate resources, and raise new challenges for materials, energy, and chemistry. .

In the electrochemical reaction, metal aluminum can undergo a three-electron reaction. Its theoretical specific capacity is second only to metal lithium in all metal elements, and its volumetric specific capacity is the highest among existing metal electrode materials, so metal aluminum is The electrode-based aluminum secondary battery is a promising new high-performance secondary battery system. Prof. Feng Wu demonstrated for the first time that Al3+ can reversibly electrochemically intercalate and desorb in metal oxides, laying an important foundation for exploring the multi-electron reaction mechanism of aluminum secondary batteries and developing a new generation of multi-electronic battery systems.