When you reply to a question, direct your answer to both the questioner and other members of the audience. Try to keep your responses as focused as possible. This will help keep them brief and preserve space for other questions.
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Breathing batteries could store 10 times the energy. An early demonstration model of the St Andrews air cell. The lithium ion batteries used in laptops and cellphones, and tipped for future use in electric cars, are approaching their technological limits. But chemists in the UK say that thereâs a way to break through the looming energy capacity barrier â let the batteries âbreatheâ oxygen from the air. A standard lithium ion battery contains a negative electrode of graphite, a positive electrode of lithium cobalt oxide, and a lithium salt-containing electrolyte.