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Current issue

ELEKTRO 12/2017 was released on December 6th 2017. Its digital version will be available on January 5th 2018.

Topic: Measurement, measuring devices and engineering; Testing and diagnostics

Main Article
Measurements on rotating machines using SFRA method
Application possibilities of ultra-capacitors or LiFePO4 batteries in trolley network of the Brno Public Transit Company

SVĚTLO (Light) 6/2017 was released on December 11th 2017. Its digital version will be available on january 11th 2018.

Lighting installations
The lighting of university building Centrale Supélec in Saclay in France
The light for our future

Daylight
Application and judgment light guides Solatube®

Storing energy from renewable sources

09.06.2017 | Phys.org | www.phys.org

One of the greatest challenges in generating energy from renewable sources is finding a way to store the continuously fluctuating energy being produced. Batteries, supercapacitors, and most other energy-storage technologies typically can't respond quickly enough to the second-by-second fluctuations inherent in wind and solar energy sources.

One device that does have a sufficiently fast response is electrostatic capacitors, but their drawback is their low energy density—they simply cannot store very much energy in a given volume. Addressing this problem, researchers in a new study have shown in simulations that antiferroelectric materials based on bismuth can potentially exhibit very high energy densities (150 J/cm3), making them a promising candidate material for electrostatic capacitors.

Energy storage

The results point to the possibility of a high-performance, environmentally friendly energy-storage device for renewable energy sources. The researchers, Bin Xu and Laurent Bellaiche at the University of Arkansas, and Jorge Íñiguez at the Luxembourg Institute of Science and Technology, have published a paper on their investigation of antiferroelectrics for energy storage in a recent issue of Nature Communications.

Read more at Phys.org

Image Credit: Nature Communications

-jk-