Category Chemistry/Nanotechnology

Sodium-based Material Yields Stable Alternative to Lithium-ion Batteries

Scientists at the University of Texas at Austin have developed a new sodium metal anode for rechargeable batteries (left) that resists the formation of dendrites, a common problem with standard sodium metal anodes (right) that can lead to shorting and fires. Images were taken with a scanning electron microscope. Credit: Yixian Wang/University of Texas at Austin.

University of Texas at Austin researchers have created a new sodium-based battery material that is highly stable, capable of recharging as quickly as a traditional lithium-ion battery and able to pave the way toward delivering more energy than current battery technologies.

For about a decade, scientists and engineers have been developing sodium batteries, which replace both lithium and cobalt used in current lithium-ion batt...

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Efficient Organic Solar Cells Processed from Green Solvents

Rui Zhang with the new solar cell. Olov Planthaber

A small guest molecule in the right place makes it possible to produce energy-efficient organic solar cells using eco-friendly solvents. A record efficiency over 17% is demonstrated. In addition, solar cells with larger areas can be produced. “This is a major step towards large-scale industrial manufacture of efficient and stable organic solar cells,” says Feng Gao, professor in the Department of Physics, Chemistry and Biology (IFM) at Linköping University. The result has been published in Nature Energy.

Developments in organic solar cells are rapid, and the maximum energy efficiency achieved by solar cells produced in the laboratory is currently over 18%...

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Prize-Winning Technology for Large-Scale Energy Storage

Printed battery with two cells before encapsulation, designed in collaboration with the Ligna Energy company. Thor Balkhed

Water-In-Polymer Salt Electrolyte for Slow Self-discharge in Organic Batteries. Safe, cheap and sustainable technology for energy storage has been developed at the Laboratory of Organic Electronics, Linköping University. It is based on two major breakthroughs: the manufacture of wood-based electrodes in rolled form, and a new type of water-based electrolyte. The result has been published in the scientific journal Advanced Energy and Sustainability Research...

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Exploding and Weeping Ceramics Provide Path to New Shape-Shifting Material

Nanoscale study and local chemical analysis of a grain boundary of a (Zr0.9 Hf0.1 O2)0.775 (Y0.5 Nb0.5 O2)0.225 (weeping) sample prepared by FIB. The micrographs are HAADF-STEM and HAADF-HRSTEM images as well as high resolution EDX elemental maps of the sample. Atomic-resolution HAADF micrographs are raw images, showing no significant intensity variation along the grain boundary (GB). The high resolution EDX maps suggest no significant element segregation at the grain boundary.

Discovery could lead to improvements in medical devices and electronics. An international team of researchers from the University of Minnesota Twin Cities and Kiel University in Germany have discovered a path that could lead to shape-shifting ceramic materials...

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