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Researchers create batteries that protects itself against overheating
US scientists have developed a modified lithium-ion battery which protection is built from overheating. If the temperature in the battery is too high, there occurs an automatic disabling mechanism in operation.
The battery has been designed by researchers affiliated with Stanford University, as reported PC World, based on a study published in Nature Energy has appeared. According to the scientists, the modified lithium-ion battery provided with a film of polyethylene with ‘nano-spikes based on nickel. These spikes have a coating of graphene, which can conduct electricity and the circuit should be closed.
The overheating mechanism works by film expands at higher temperatures. If that happens, then touch the individual spikes each other anymore, so the circuit is broken and the battery automatically ‘off’ is put. In addition, it is possible to select a pre-set limit temperature, by applying more or less spikes in the web.
The battery pack offers a solution for devices where overheating is lurking. In recent times, so-called “hover boards” a kind of electric skateboards with wheels on the side, made the news because there is a risk of ignition. Several companies face problems, which some stores have stopped selling it. The scientists from Stanford have not told when will be commercially deployed by their developed battery.
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