Researchers at the University of Warwick have been inspired by the unique movement of trembling aspen leaves, to devise an energy harvesting mechanism that could power weather sensors in hostile environments and could even be a back-up energy supply that could save and extend the life of future Mars rovers.
Splitting water into hydrogen and oxygen presents an alternative to fossil fuels, but purified water is a precious resource. A Stanford-led team has now developed a way to harness seawater -- Earth's most abundant source -- for chemical energy.
A team of scientists including researchers at the U.S. Department of Energy's Brookhaven National Laboratory and SLAC National Accelerator Laboratory have identified the causes of degradation in a cathode material for lithium-ion batteries, as well as possible remedies. Their findings, published on March 7, 2019, in Advanced Functional Materials, could lead to the development of more affordable and better performing batteries for electric vehicles.
NIMS, the University of Tokyo, Niigata University and RIKEN jointly designed a multilayered metamaterial that realizes ultra-narrowband wavelength-selective thermal emission by combining the machine learning (Bayesian optimization) and thermal emission properties calculations (electromagnetic calculation). The joint team then experimentally fabricated the designed metamaterial and verified the performance. These results may facilitate the development of highly efficient energy devices.
In a paper to be published in the forthcoming issue in NANO, researchers from the China University of Petroleum (East China) have summarized the recent advances in application of 2D nanomaterials on the electrode materials of lithium-ion batteries, owing to their compelling electrochemical and mechanical properties that make them good candidates as electrodes in lit-ion batteries for high capacity and long cycle life.
The cryptocurrency Bitcoin is known for its energy footprint. Now, researcher Alex de Vries, from PricewaterhouseCoopers (PwC) in the Netherlands, suggests that renewable hydropower production cannot supply the large quantities of energy needed to power machinery used to validate Bitcoin transactions. In a Commentary publishing March 14 in the journal Joule, he highlights the vast quantities of electronic waste produced by the Bitcoin network and calls for alternative strategies to curb the cryptocurrency's environmental impact.
Researchers have examined a method to extract rare-earth elements from mining waste that could provide the world with a reliable supply of the valuable materials. The research, led by Idaho National Laboratory and Rutgers University with support from the Critical Materials Institute, is online and in an upcoming issue of the Journal of Chemical Thermodynamics.
Batteries power most of our devices, and even some cars. But researchers now report in ACS Applied Materials & Interfaces a step toward running electronic devices in homes and offices on the light coming from lamps scattered around the room. The team developed special light harvesters, like those used for solar power, optimized to produce energy from ambient indoor lighting.
Researchers at Scripps Institution of Oceanography at UC San Diego and UC Riverside found that inland river dams can have highly destructive effects on the stability and productivity of coastline and estuarine habitats, which provide protection from storms, commercial fishery habitats, and belowground carbon storage.
Findings from an international team of scientists show that twisted magnetic fields can evolve in only so many ways, with the plasma inside them following a general rule.