Green Options » graphite

Graphene Emerging as the Miracle Material of the New Millenium

Tina Casey — Fri, 26 Jun 2009 03:24:05 +0000

Move over, silicon: graphene is ready for its closeup. Discovered just a few years ago, graphene is a sheet of graphite the thickness of just one atom. It can be processed like silicon to make electronic devices, which makes it easier to manipulate than the current “it” material, carbon nanotubes. Without the breakdown problems that beset silicon at the nanoscale, graphene is bringing the dream of a molecule-sized computer closer to reality.

Silicon Nanowire Batteries, Take Two: The “Core Shell” Approach

Karen Pease — Wed, 21 Jan 2009 21:18:40 +0000

Since the late 1800s, the primary impediment to the adoption of electric vehicles has been battery technology. And while the technology has advanced by leaps and bounds in the last decade or two (compare your cell phone with one from the early 90s), with a threefold improvement in energy density and more than an order of magnitude improvement in power density, it still lags behind gasoline.

Some have argued that current technology is sufficient — that the ability to drive 1 1/2 hours to 3 hours nonstop is good enough for the overwhelming majority of trips, and that paired with a range extender, rapid chargers, or battery swapping, you have a viable means of replacing the gasoline car. However, there still is a great deal of pressure to get electric vehicle range up to that of gasoline.

Enter Yi Cui. Again.

Scientists Discover Method to Mass Produce Graphene, Major Boost for Renewable Energy

Andrew Williams — Tue, 11 Nov 2008 17:24:55 +0000

US Scientists have figured out a way to mass produce the nanomaterial graphene, opening the door to significant advances in the storage of hydrogen, as well as the electricity produced by solar and wind energy.

Graphene, produced by reducing graphite down to a sheet only one atom thick, is one of the strongest materials known to man. It has been shown to have huge potential for hydrogen and renewable energy storage, but up until now has been held back by a lack of supply. Now the team, based at the California NanoSystems Institute (CNSI) at UCLA, have discovered a method of producing graphene sheets in large quantities.