Improving Magnesium Borohydride For Solid-state Hydrogen Storage

The key mechanism by which magnesium diboride (MgB2) absorbs hydrogen has been discovered by scientists at Lawrence Livermore National Laboratory (LLNL). The work, through theory and experimentation, also provides important insights into the reaction pathway that converts MgB2 to its highest hydrogen capacity form, magnesium borohydride (Mg(BH4)2). Mg(BH4)2 is a particularly promising hydrogen storage material [...]

Perovskite Solar Cells Have Intrinsic Instability Issues

Solar cell technology is now used by many industrial and government entities, but it is still prohibitively expensive for many individuals who would like to utilize it. There is a need for cheaper, more efficient solar cells than the traditional silicon solar cells so that more people may have access to this technology. One of [...]

Self-powered Mobile Polymers Convert Ultraviolet Light Into Motion

New materials that directly convert ultraviolet light into motion without the need for electronics or other traditional methods have been developed by an international group involving Inha University, University of Pittsburgh and the Air Force Research Laboratory, building upon their previous research. One of the impediments to developing miniaturized, “squishy” robots is the need for [...]

Graded Bandgap Perovskite Solar Cells Set Efficiency Record

Solar cells made from perovskite can more efficiently turn sunlight into electricity employing a new method to sandwich two types of perovskite into a single photovoltaic cell. Perovskite solar cells are comprised of a blend of organic molecules and inorganic elements that together capture light and convert it into electricity, just like today’s more common [...]

Measuring Microscale Granular Crystal Dynamics

For the first time ever, mechanical engineers have succeeded in analyzing interactions between microscale granular crystals. Designing materials that better respond to dynamic loading could help vehicles minimize vibration, better protect military convoys or potentially make buildings safer during an earthquake. Granular materials are assemblages of particles that range broadly from powders to sand to [...]