发现可以给手机充电的细菌

（单词翻译）

Bacteria Discovered To Recharge Cell Phone
　　
　　 　　

　　 A microbe called Rhodoferax Ferrireducens，found in the mud at Oyster¹ Bay，Virginia，has been discovered to transfer electrons directly onto an electrode as it metabolizes sugar into electricity．"You can harvest enough electricity to power a cell phone battery for about four days from a sugar cube，"researcher Derek Lovley says．"A cup of sugar contains enough power to light a 60－watt light bulb for about 17 hours．"This process is accomplished² at an astonishing 80% efficiency and produces only carbon dioxide gas as a byproduct．Previous similar reactions progressed at only 1% efficiency and required toxic³ metallic⁴ mediator⁵ chemicals to assist，avoided here because the bacteria grows happily as a slime colony directly on the electrode plates．The bioreaction was found to work not only with glucose⁶
　　but also with the fruit sugar fructose，with sucrose
　　（found in sugar cane⁷ and sugar beet）and even xylose，a sugary byproduct of wood and straw．In addition，the bacterium⁸ is rugged⁹ and stable，able to grow at temperatures ranging from four to 30℃，with 25℃the optimum．If engineering obstacles can beovercome and manufacturing techniques devised，a power cell based on this process could one day be as compact as household batteries．