From small mobile phone MP3s to electric cars, how to make rechargeable batteries with longer safety, longer battery life and more charging cycles has always been a key technical problem. The lithium-ion battery technology that we have used for many years has many obvious shortcomings, such as rapid degeneration of power, short life, and no environmental protection. The lithium battery overheating and explosion accidents that have appeared many times are still full of lingering problems. Hex Bolts With Nuts,Hex Head Bolts,Hex Head Bolts With Nuts,Stainless Steel Bolt Kunshan Liyue Hardware Products Co.,Ltd , https://www.fixlyhardware.com
Among the many technologies that are expected to replace lithium batteries, there has recently been a new force: zinc-air rechargeable batteries. In fact, the invention of zinc-air battery technology has been in existence for more than a hundred years, using activated carbon to adsorb oxygen in the air as the positive electrode active material, zinc as the negative electrode, and ammonium chloride or caustic solution as the electrolyte. In the 1960s, due to technological improvements brought about by aerospace engineering, zinc-air batteries began to enter practical applications. Today, many button batteries used in hearing aids are actually zinc-air batteries.
Due to the structural limitations of zinc-air batteries, rechargeable battery technology has not been realized for a long time. In recent years, the Norwegian scientific research institute SINTEF has realized the charging technology of zinc-air battery by improving the zinc electrode and internal humidity control. The current rechargeable zinc air battery has achieved more than 100 charge and discharge cycles in the experiment, and the expected life can reach 200 times. Compared with lithium batteries, zinc-air rechargeable batteries store three times as much electricity, half the cost of lithium batteries, and there is no safety hazard from overheating.
SINTEF's ReVolt company, established in Switzerland, specializes in product development and marketing of zinc-air rechargeable batteries. The company said that miniature zinc-air rechargeable batteries for hearing aids will be available for sale next year, and zinc-air rechargeable batteries for other mobile devices such as mobile phones will be introduced later. When it comes to the market, its charge and discharge life should reach 300 to 500 times.
In addition, by referring to the fuel cell structure, ReVolt said that the zinc-air rechargeable battery will be used in electric vehicles in the future, with a charge and discharge life of more than 10,000 times, but this technology is still far away from practical use.