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Japanese researchers have developed all-solid-state air batteries: portable and safe, and are expected to be used in mobile phones

2025-01-15 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > IT Information >

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CTOnews.com, May 25, according to the Nippon Keizai Shimbun and Xinhua News Agency, a research team from Yamanashi University and Waseda University in Japan recently developed a new type of all-solid-state air battery, which combines organic compounds reversibly doped with hydrogen ions (protons) and proton conductive polymer films with redox organic compounds to charge and discharge repeatedly. The research results were published in the International Edition of Applied Chemistry, an academic journal of the German Chemical Society, on the 16th.

▲ figure source Fabcross at present, the common air battery is generally composed of oxygen in the air (positive active material), metal (negative active material) and ionic conductive electrolyte, but in many cases, the use of liquid electrolyte may have safety problems such as liquid leakage, evaporation and fire. Therefore, researchers are committed to the development of an all-solid-state air secondary battery, which combines redox sensory compounds (dihydroxybenzoquinone and its polymer) with proton as negative active material, proton conductive polymer film (nafion) as electrolyte, and gas diffusion electrode with platinum catalyst as positive electrode (active material is oxygen).

In the developed battery, the researchers designed and constructed a negative electrode structure to mix the electronic conductive material (toner) and proton conductive polymer to promote the redox reaction of the negative active material dihydroxybenzoquinone. And smoothly promote proton transfer at the interface with the electrolyte membrane. The discharge capacity of the battery can be significantly improved by using the polymer of the compound as the negative electrode compared with the use of 2-dihydroxy-1-benzoquinone as the negative electrode. At the discharge rate of 15C, the charge and discharge cycles of the all-solid-state air battery using the polymer of 2Magne-5-dihydroxy-1-benzoquinone as the negative electrode can reach 30 times.

CTOnews.com noted that the research team said that the newly developed all-solid-state air secondary battery "will not deteriorate the electrode due to water or oxygen, and has excellent safety and is expected to be used as a power source for small electronic devices such as mobile phones." the research team also announced that it will conduct further research on the actual use capacity in the future, and may be able to see such batteries in future devices.

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