An innovative “air-breathing” battery able to store power for months could help usher in reliable renewable power.
Developed by a team from MIT, the battery’s anode is made up of inexpensive sulfur dissolved in water and a cathode of an aerated liquid salt solution. As oxygen moves into the cathode, the anode releases electrons to an external circuit. Then, as the oxygen flows out, the electrodes travel back to the anode and recharge the battery.
According to the team, the “breathing” battery could be scaled up, with a chemical cost about 1/30th that of conventional batteries.
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