Scientists have developed an air-zinc battery, partially made from kevlar, which has sufficient strength to withstand structural loads.
Batteries are needed to provide robotics of electricity, but at the same time on na usually account for at least 20% of the inner space and the mass of the machine, the movement of which is also consumed. However, researchers from Michigan University proposed a solution to use an element as carrier part of the device.
To do this, the command coated the electrodes of the air-zinc battery nanofibular membrane from Kevlar in a water-based polymer gel, which helps to carry the hydroxide ions between the electrodes. In addition to increasing the mechanical strength, the coating of nanostructured fibers also prevents the growth of dendrites — harmful metallic formations leading to the damage of the battery.
According to the developers, thanks to other improvements, the energy density in their battery is three times higher than that of a conventional lithium-ion drive. Calculations of scientists have also shown that if it makes a robot body from such an air-zinc battery, it would provide 72 times more energy per unit of total mass than one lithium-ion battery.
However, the main disadvantage of zinc batteries still remains the duration of their service, since the accumulation efficiency begins to decline after 100 working cycles.
Scientists did not inform the maximum energy intensity of the prototype, but they said they were negotiating the commercialization of development and hope to bring a new market to the market in the next 3-5 years.
Previously, we also reported the development of high-power potassium batteries,
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