A new study finds that cracks in brittle perovskite films can be easily healed with compression or mild heating, a good sign for the use of perovskites in next-generation solar cells.
If you're an environmentally conscious consumer, you've probably heard that today's highly efficient dishwashers use less energy and water than traditional hand-washing techniques.
Altering the altitudes of less than 2% of flights could reduce contrail-linked climate change by 59%, says a new Imperial study.
Researchers from the University of Tsukuba developed an improved thermocell design to convert heat into electricity. The thermocell contained a material that exhibited a phase transition from one arrangement of atoms to another when heated to 50 °C. The phase transition caused the output voltage of the thermocell to increase substantially to a level sufficient to power electronics. This thermocell shows promise as a way to use waste environmental heat to power electronic devices.
Safe and environmentally-friendly hydrogen gas on demand could be on the horizon following a new 'hydrogenation' chemical process in development at The City College of New York. Led by Mahesh K. Lakshman, the research uniquely bypasses the need for an external source of hydrogen gas to accomplish a wide range of hydrogenations. It appears as an inside cover feature in the 2020 issue #1 of journal 'Advanced Synthesis and Catalysis.'
In sub-Saharan Africa, charcoal dominates as an energy resource for cooking. Catherine Nabukalu, a graduate of the University of Pennsylvania Master of Environmental Studies program, traveled to her native Uganda to study how this fuel is produced, traded, and used. In a new article, she and School of Arts and Sciences' Professor Reto Gieré share information about the livelihoods that depend on charcoal and about its environmental toll.
Fuel cells turn chemicals into electricity. Now, a U of T Engineering team has adapted technology from fuel cells to do the reverse: harness electricity to make valuable chemicals from waste carbon (CO2).
Destabilising the precarious equilibrium at depth with geothermal wells may reactivate the geological layers causing earthquakes. Researchers (UNIGE/CNR) have studied the seismic activity linked to a geothermal drilling in search of supercritical fluids. They discovered that the drilling did not cause uncontrolled seismic activity. This drilling under such critical conditions suggests that the technology is on the verge of mastering geothermal energy, paving the way for new sources of non-polluting heat and electricity.
Kanazawa University researchers used a novel technique to deposit TiO2 layers for efficient perovskite solar cells (PSCs). The inkjet-deposited layers applied at an angle of 45°, without the need for a vacuum, were uniform and their thickness could be controlled by manipulating coating times. The resulting PSCs had an efficiency of 13.19%, making the technique promising as a simple, low-cost method that could be easily scaled-up for commercial production of efficient PSCs.
An international team led by researchers at UCL has revealed new insights into the workings of a lithium battery by virtually 'unrolling' its coil of electrode layers using an algorithm designed for papyrus scrolls.