With the rise of wearable electronic devices, ultra-thin printed thin-film batteries with flexibility have long been a hotspot for scientists. A few days ago, according to the physicists organization network report, in order to apply flexible thin-film batteries to actual products, a new study showed that zinc manganese dioxide batteries provide people with an alternative to existing printed batteries. Analysts pointed out that the release of the above research has enhanced the importance of zinc manganese dioxide.
Flexible battery powers wearable devices
With the rise of wearable electronic devices, new technologies, including organic semiconductor thin-film transistors, have emerged; however, due to limitations such as stability, they cannot be applied to actual products. According to the physicist organization network report, a study published in the "Applied Physics Letters" recently proposed a new scheme, namely the use of zinc manganese dioxide batteries.
Analysts said that many studies are currently devoted to improving the availability of organic semiconductor thin-film transistors, but after efforts, people have found that such devices have low flexibility, long chemical bonds, and thick dielectric layers, which cannot meet the needs of practical applications. Therefore, alkaline chemical batteries similar to zinc manganese dioxide have received more attention.
According to reports, a major driving force for the development of thin-film printed batteries is that they can be produced through production lines that manufacture the remaining components of flexible electronic devices, thereby increasing integration and reducing production costs. Compared with lithium-ion batteries, alkaline batteries are more environmentally friendly and require no sealing and lower cost. Alkaline chemical batteries are printed on fiber substrates using stencils, which are flexible, can drive flexographic printed circuits, and meet their required performance characteristics.
In the above new research, the researchers used a special manufacturing process to connect 10 cells in series to form a series circuit with a peak voltage of 14 volts and a capacity of 0.8 milliampere hours. This new type of thin-film battery can use the currently commercially available polyvinyl alcohol or polyethylene cellulose film as a raw material, and use a 100-micron-thick film to isolate the zinc and manganese dioxide electrodes and become its substrate. A hydrophobic fluoropolymer solution (Teflon AF) is printed between the two electrodes to reduce electrolyte migration and contact with electrodes in other adjacent cells. The researcher conducted a discharge test of this battery with a resistance of 100 kilohms: the battery of 0.8 milliampere hours was discharged after 7.5 hours, and the voltage dropped from 14 volts to 10 volts. In order to determine its performance in a real printed circuit, they also conducted tests on the battery similar to the actual use environment. The researchers used a simple circuit consisting of five inverters connected end to end for testing. The output of this circuit is very sensitive to the supply voltage and the delay of the circuit. The results show that the voltage waveform of the circuit is maintained at about 13 volts in the measurement in units of 10 milliseconds; after 20 minutes, no change exceeding this amplitude is detected, which indicates that the new battery has a relatively stable power supply capability. The researchers said that more complex circuits may require more energy to drive, but the new zinc manganese dioxide battery at least provides people with an alternative to existing printed batteries.
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