Date: 4 weeks ago   Category: Hi-Tech

Workers of lities are created - the oxygen batteries capable "to hold a charge" three times more than usual


To place more energy in batteries is a key to creation of electric vehicles with longer run, smartphones with a "eternal" charge and cheap electronics around and everywhere. Lities-oxygen batteries represent one of the most promising ways of development in this direction. They can increase energy density by several orders in comparison with traditional lithium - ion batteries - at least, in the theory. In the work published yesterday in the Science magazine, scientists from the University of Waterloo have found out how to resolve the biggest obstacles in a way to formation of these batteries as commercial reality.

B what was a hitch? Most important: when lithium - oxygen batteries were discharged, oxygen turned into superoxide and then into lithium peroxide, jet components which corroded the battery over time. It, in turn, limited her abilities to a recharge - and possible useful application. When our batteries are better? What has changed? For the decision it is problems, scientists have passed from the carbon cathode to the cathode from nickel oxide with assistance of a grid from stainless steel. Also as electrolyte melted salt was used - electrolyte allows positively charged ions to move between electrodes - and have lifted the working temperature of the battery to 150 degrees Celsius. It has allowed to increase number of cycles of charging almost three times in comparison with obychnyem of lities - oxygen options. Also scientific it was succeeded to increase the content of energy per unit mass more than by 50%. "This opening emphasizes huge opportunities - to create new technologies of batteries which will be able potentially to throw down a challenge of lities - to ion batteries and other methods of storage", scientists write.

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