New material makes electricity from waste heat
Researchers at Northwestern University placed nanocrystals of rock salt into lead telluride to create a material that is expected to be able to convert 14 percent of heat waste to electricity, a university release said recently.
"It has been known for 100 years that semiconductors have this property that can harness electricity," chemistry Professor Mercouri Kanatzidis said. "To make this an efficient process, all you need is the right material, and we have found a recipe or system to make this material."
"We can put this material inside of an inexpensive device with a few electrical wires and attach it to something like a light bulb," said Vinayak Dravid, professor of materials science and engineering and co-author of the paper. "The device can make the light bulb more efficient by taking the heat it generates and converting part of the heat, 10 to 15 percent, into a more useful energy like electricity."
Automotive, chemical, brick, glass and other industries that use heat to make products could make their systems more efficient with the use of this scientific discovery, Kanatzidis said.
Related News
Russia suspected as hackers breach systems at power plants across US
WASHINGTON - Hackers working for a foreign government recently breached at least a dozen US power plants, including the Wolf Creek nuclear facility in Kansas, according to current and former US officials, sparking concerns the attackers were searching for vulnerabilities in the electrical grid.
The rivals could be positioning themselves to eventually disrupt the nation’s power supply, warned the officials, who noted that a general alert was distributed to utilities a week ago. Adding to those concerns, hackers recently infiltrated an unidentified company that makes control systems for equipment used in the power industry, an attack that officials believe may be…
