Can use lithium batteries at minus 70 degrees Celsius

Source: 2020 - 03 - 23 clicks: therefore time at minus 70 degrees Celsius can be used by the Chinese scientists announced a lithium battery can work under 70 c of the lithium battery, it can be used for one day cold earth and outer space environment. According to a study published in the latest issue of the joule, the journal of the American academic in energy development and new battery summer yongyao team at fudan university in China using ethyl acetate, low freezing point and conductive at extremely low temperatures, electrolyte and electrode, two organic compounds PTPAn PNTCDA anode and cathode. Electrolyte ion between the two electrodes of mobile chemical medium, but in the electrolyte and electrode on the border of the electrochemical reaction at low temperature is difficult to continue. , researchers say, is that, unlike traditional electrode used in the lithium ion battery electrodes used in organic compounds is not dependent on the embedding process, the lithium ion is embedded into the molecular matrix of electrode, thus preventing the process is slow in low temperature conditions. 'ethyl acetate electrolytes and organic polymer electrode make rechargeable battery can work in low temperatures of minus 70 degrees Celsius, 'xia said. Traditional lithium-ion battery's performance on minus 20 degrees Celsius is the best level of 50%, 40 degrees Celsius below zero when performance is the best level of 12%. Extreme cold regions such as Russia and Canada temperatures below minus 50 degrees Celsius; In space, the temperature can be as low as minus 157 degrees Celsius. Xia said, compared with the traditional lithium-ion battery electrodes data, this new type of battery is enough, cheap, environmental protection. He estimates that the cost of the battery is only around a third of the conventional batteries. But the researchers admit that the battery made products, the main challenge is their unit mass energy than commercial lithium ion battery, so you need to optimize production. However, xia thinks, it still has obvious potential.