The reporter learned from Nankai University on the 20th that China’s high-capacity energy storage battery research has made significant progress. The school’s academician Chen Jun’s team used organic germanium as a positive electrode to develop a high-capacity, high-discharge-frequency aqueous zinc secondary battery for the first time. It was possible for us to bid farewell to the highly polluted water-based lead-acid battery as soon as possible. The research results have been published in the latest issue of the American Association for the Advancement of Science, "Scientific Progress." As the utilization rate of renewable energy such as solar energy and wind energy continues to increase, the development of low-cost, high-performance rechargeable energy storage batteries has become the world's target. Zinc is inexpensive, with a theoretical capacity of 820 milliamperes per gram, and it has good water compatibility and stability, and is suitable for large-scale production applications. Therefore, rechargeable water-based zinc batteries have broad application prospects. However, the development of water-based zinc batteries has been hampered by the difficulties in the selection of cathode materials and the slow kinetics of zinc deintercalation. Organic terpenoids are ubiquitous in nature, and researchers have discovered more than 2,400 species of terpenes from plants, fungi, marine animals, and insects. The development of non-deintercalation reaction mechanisms and multi-electron transfer of novel organogermanium electrode materials are important for improving the capacity and cycling stability of zinc batteries. At present, electroactive europium electrodes generally use organic electrolytes. According to the similar compatibility principle, terpenoids are easily dissolved in organic solvents, resulting in problems such as loss of active materials and short battery life. Academician Chen Jun’s team has been dedicated to the design, preparation, and application of organic germanium electrode materials for many years. They use electrolyte modification, polymerization, salination, and loading methods to improve not only the capacity retention rate of germanium but also the rational structure design. The use of terpenoids as a positive electrode for rechargeable zinc-based batteries, for the first time has achieved a specific capacity of 335 mAh per gram, the charge-discharge platform voltage difference is as low as 70mV, the energy efficiency is as high as 93%, and after 1000 cycles, the battery The capacity retention rate is still 87%, and the battery cycle stability is comparable to that of inorganic electrode materials. The organic water-based zinc battery developed by the team can provide an energy density of 220 watt-hours per kilogram, far exceeding the water-based lead-acid batteries commonly used today, and is equivalent to the current commercial lithium-ion battery. As water-based zinc batteries have the advantages of high energy density, safety, reliability, low cost, and environmental protection, they also provide new options for future major applications such as electric vehicles and large-scale energy storage. Square Wire Mesh,Square Woven Wire Mesh,Electro Galvanized Square Wire Mesh,Galvanized Square Woven Wire Mesh HEBEI CONQUER HARDWARE WIRE MESH CO.,LTD , https://www.conquerwiremesh.com
Nankai University has achieved a major breakthrough in high-capacity energy storage battery research