lithium battery pack 48v 120ah.New "Membrane Materials" Provide a New Path for the Development of Zinc Batteries

　　According to the Science and Technology Daily, the reporter learned from the Dalian Institute of Chemical Physics of the Chinese Academy of Sciences that the research team of the Institute has made new progress in the research of zinc based battery membrane materials. Through the structural design of membrane materials, the team achieved a uniform zinc deposition process under high surface capacity and high current density conditions, and conducted detailed research and exploration on the mechanism of membrane structure regulating the zinc deposition process.

　　The relevant research results are published in the Journal of the American Chemical Society. The rapid development of renewable energy has promoted the development and research of high energy density energy storage devices based on zinc chemistry. Zinc secondary batteries have advantages such as low cost, high safety, high energy density, and good compatibility with water electrolytes.

　　In the field of energy storage, especially in the field of user side energy storage, it has good application prospects. However, zinc dendrites are prone to occur during the zinc deposition process, which is more pronounced under high surface capacity and high current density conditions, seriously affecting the cycling life of the battery. After multiple experiments, researchers have developed a new polymer film with ordered wave fringes on its surface - Turing film, which can achieve uniform deposition of zinc with high surface capacity under high current density. Researcher Li Xianfeng introduced that in the design of Turing films, the peaks and valleys of surface stripes can effectively regulate the distribution of zinc salts (Zn (OH) 42-) and provide more zinc deposition space by controlling the carrier flow rate in the micro region.

　　Meanwhile, during the film formation process, the interaction between surface coordination copper ions and (Zn (OH) 42-) further leads to uniform deposition of zinc. The alkaline zinc iron flow battery assembled with Turing membrane was reported to work stably under ultra-high surface capacity conditions at high current density, providing a new approach for the development of highly stable zinc based secondary batteries.

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