The phrase "positive electrode" refers to the part of a battery or cell that has a positive charge. It attracts and receives electrons during the flow of electric current. Full definition
But in a paper posted online today in Nature Nanotechnology, the MIT team, led by materials scientist Yang Shao - Horn, took a very different approach: using carbon nanotubes to replace the oxide - based positive electrode. (sciencemag.org)
Today's most popular rechargeables, lithium ion batteries, are made from negative and positive electrodes separated by an electrolyte through which positively charged lithium ions can flow back and forth. (sciencemag.org)
Ristenpart thinks that positive ions drain out of the droplet and negative electrons come in through the bridge, so the droplet, now negatively charged, is drawn up to the positive electrode, where it regains its original positive charge, and so on. (newscientist.com)