drexel university Archives – The Green Optimistic green tech news, since 2008 Mon, 30 Sep 2013 20:58:43 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 MXenes: The Graphene-Like Material That Could Revolutionize Lithium-Ion Batteries https://www.greenoptimistic.com/mxenes-graphene-lithium-ion-batteries-20130930/ https://www.greenoptimistic.com/mxenes-graphene-lithium-ion-batteries-20130930/#respond Mon, 30 Sep 2013 20:58:41 +0000 https://www.greenoptimistic.com/?p=42075 We’ve heard a lot about graphene, a single-layer hexagonal arrangement of carbon atoms, about which it has been said might revolutionize lithium-ion battery, water filtration, and even reduce emissions. Scientists are still discovering all the wonderful things that graphene might be able to do, but we’re still waiting for a lithium-ion battery with 2,000kWh/kg and […]

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]]> https://www.greenoptimistic.com/mxenes-graphene-lithium-ion-batteries-20130930/feed/ 0 42075 Drexel Scientists Invent Greener Alkali-Activated Cement https://www.greenoptimistic.com/drexel-alkali-activated-cement-20120224/ https://www.greenoptimistic.com/drexel-alkali-activated-cement-20120224/#respond Fri, 24 Feb 2012 01:14:21 +0000 https://www.greenoptimistic.com/?p=22833 Although it’s being used since the late 1800s, the Portland cement (OPC) is guilty for a large amount of carbon dioxide spewed in the atmosphere by its manuacturers. The latest recipe comes from Drexel and uses an industrial byproduct to make the cement greener. The byproduct is called slag. It and limestone, a common mineral, […]

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