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 Jonsson School Team Charges Ahead to Develop Better Batteries

March 26, 2018

They die at the most inconvenient times. Cellphones go dark during important conversations because a battery hasn’t been recharged. Or the automotive industry revs up with excitement for a new battery-powered vehicle, but it needs frequent recharging. Or yardwork is delayed because the battery for your string trimmer is dead.

Researchers at The University of Texas at Dallas have developed a high-powered, environmentally safe lithium-sulfur substitute that could drastically lengthen battery life. Their work has been published in the journal Nature Nanotechnology. “Common lithium-ion batteries only have a certain capacity,” said Dr. Kyeongjae “K.J.” Cho, professor of materials science and engineering. “And most people want to use their phones for a longer time.”….

hand holding phone that is charging

Development of stable lithium-sulfur batteries — which hold more charge than common lithium-ion batteries — could cut back on how often mobile devices need to be charged.

 

New Material May Help Cut Battery Costs for Electric Cars, Cellphones

In the battle of the batteries, lithium-ion technology is the reigning champion, powering that cellphone in your pocket as well as an increasing number of electric vehicles on the road. But a novel manganese and sodium-ion-based material developed at The University of Texas at Dallas, in collaboration with Seoul National University, might become a contender, offering a potentially lower-cost, more ecofriendly option to fuel next-generation devices and electric cars….

Discovery Could Energize Development of Longer-Lasting Batteries

May 23, 2016

A UT Dallas researcher has made a discovery that could open the door to cellphone and car batteries that last five times longer than current ones. Dr. Kyeongjae Cho, professor of materials science and engineering in the Erik Jonsson School of Engineering and Computer Science, has discovered new catalyst materials for lithium-air batteries that jumpstart efforts at expanding battery capacity. The research was published in Nature Energy….

 

Scientists Dramatically Increase Light from Atomic-Sized Materials

Dec. 4, 2015

recent article in the journal Science details how researchers from the Erik Jonsson School of Engineering and Computer Science devised a simple process that dramatically increases light generation from certain atomic-sized materials. The findings could have a broad impact in the advancement of LED displays, high efficiency solar cells, photo detectors, and nano-electronic circuits and devices….

 

New Technology May Lead to Prolonged Power in Mobile Devices

Researchers from The University of Texas at Dallas have created technology that could be the first step toward wearable computers with self-contained power sources or, more immediately, a smartphone that doesn’t die after a few hours of heavy use. This technology, published online in Nature Communicationstaps into the power of a single electron to control energy consumption inside transistors, which are at the core of most modern electronic systems….

Dr. Jiyoung Kim and Dr. K.J. Cho

Researchers on Quest to Create Next-Generation Technologies

Jan. 22, 2013

Two teams of researchers from The University of Texas at Dallas have been chosen to help a $194 million national network create the technologies of the next generation. One UT Dallas team will evaluate materials to replace silicon in integrated circuits, with the goal of creating faster electronics that use dramatically less power.  The other team will help design a computer architecture that allows the many types of computers used in everyday life to seamlessly communicate with one another, making it possible to build systems to avoid traffic accidents or to lock down an area in the case of an emergency. The Semiconductor Technology Advanced Research Network, known as STARnet,  is administered by…..

Dr. Cho and Dr. Wallace

Researchers Find Material for Cleaner-Running Diesel Vehicles 

Aug. 16, 2012

Dr. Kyeongjiae “K.J.” Cho, professor of materials science and engineering and physics at UT Dallas, says platinum is too scarce and expensive to be a long-term answer to diesel’s pollution problems. Engineers at a company co-founded by a University of Texas at Dallas professor have identified a material that can reduce the pollution produced by vehicles that run on diesel fuel. The material, from a family of minerals called oxides, could replace platinum, a rare and expensive metal that is currently used in diesel engines to try to control the amount of pollution released into the air. In a study published in the August 17 issue of Science, Dr. Kyeongjae “K.J.” Cho, professor of materials science and engineering…..

Dr. Kyeongiae K.J. Cho

 

Prof’s Theory Could Improve Shelf Life of Electronics

Jan. 13, 2012

Research by UT Dallas engineers could lead to more efficient cooling of electronics, which would pave the way for quieter and longer-lasting computers, cellphones and other devices. Much of modern technology uses silicon as semiconductor material. But research recently published in the journal Nature Materials shows that graphene conducts heat about 20 times faster than silicon. “Heat is generated every time a device computes,” said Dr. Kyeongjae “K.J.” Cho, associate professor of materials science and engineering and physics at UT Dallas and one of the paper’s authors. “For example, a laptop fan…..