Water-based zinc ion battery breaking electric car mobile phone explosive problem

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

Recently, Zhang Ning, a new positive electrode material and electrolyte, designed a new positive material and electrolyte in the "water-based zinc ion" battery, and the first time the effect, safety, stability of the zinc ion battery has greatly improved and improved. "Why is there an electric car that occurs when the mobile phone explosion occurs? Because the lithium-ion batteries they use have a certain safety hazard. "School of Ph.

D., School of Chemistry, Nankai University, said recently, he designed a new positive material and electrolyte in the" water-based zinc ion "battery. For the first time, the cationic defective zinc manganese oxide (ZnMn2O4) is used in the positive electrode, while the first use is high Concentration large anionic electrolyte trifluoromethane sulfonate (Zn (CF3SO3) 2), so that the effectiveness, safety, stability of the zinc ion battery has greatly improved and improved, and related scientific research results are published in Materials and Chemical Lead Journals.

"American Chemical Society", the result is now available. According to Zhang Ning, the lithium-ion battery has been widely used in people's life, but because the lithium ions shuttle interlude between the positive and negative poles, it is easy to form a needle metal, "lithium graphics", thus The diaphragm causes internal short circuit, plus the use of flammable organic electrolyte greatly reduces the safety of lithium ion batteries. "Since the zinc resources are rich and cheap, the water-based electrolyte does not have flammable and explosive hazards, and the characteristics are suitable for large-scale energy storage systems, such as smart grids, so we will study the target to" water-based zinc ion battery ".

"In terms of positive electrode materials, Zhang Ning and its team have realized the effective storage of Zn by continuously exploring the optimization experiment conditions, greatly enhances the cycle stability of the zinc ion battery, and the capacity retention ratio is as high as 94%. And the existing alkaline system is very stable, and the cycle life is generally less than 50 times, and the capacity attenuation is very fast. This material is the first application in aqueous zinc-ion battery.

"Water-based zinc ion" battery can not only greatly improve battery performance, safe stability, but also reduce costs. It is understood that the price of metal zinc in the current market is about 2 US dollars per kilogram, while the metal lithium price is approximately $ 300 per kg. Zinc resources are cheap and easy, and it is more suitable for large-scale use in production practice.

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