Oak Ridge Today

ORNL, Solid Power sign exclusive license for lithium-sulfur battery tech

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Howe-Dudney-Liang

ORNL’s Nancy Dudney, center, and former lab researchers Jane Howe and Chengdu Liang were among the developers of lithium-sulfur materials that have been licensed to Solid Power for use in next-generation batteries. (Photo by ORNL)

 

Oak Ridge National Laboratory and Solid Power Inc. of Louisville, Colorado, have signed an exclusive agreement licensing lithium-sulfur materials for next-generation batteries.

The company licensed a portfolio of ORNL patents relating to lithium-sulfur compositions that will enable development of more energy-dense batteries, a press release said. ORNL’s proof-of-concept battery research has demonstrated the technology’s potential to improve power, operating temperature, manufacturability, and cost as well, the release said.

“We’re thrilled to add the technology developed at ORNL to Solid Power’s portfolio of novel materials and processes built around manufacturing a better battery,” said Douglas Campbell, president and chief executive officer of Solid Power. “The intellectual property ORNL has perfected better positions Solid Power to successfully achieve its mission.” [Read more…]

‘Double-duty’ electrolyte enables new chemistry for longer-lived batteries

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ORNL Battery Chemistry

When ORNL researchers incorporated a solid lithium thiophosphate electrolyte into a lithium-carbon fluoride battery, the device generated a 26 percent higher capacity than what would be its theoretical maximum if each component acted independently. (Image courtesy ORNL)

 

Researchers at Oak Ridge National Laboratory have developed a new and unconventional battery chemistry aimed at producing batteries that last longer than previously thought possible.

In a study published in the Journal of the American Chemical Society, ORNL researchers challenged a long-held assumption that a battery’s three main components—the positive cathode, negative anode, and ion-conducting electrolyte—can play only one role in the device.

The electrolyte in the team’s new battery design has dual functions: It serves not only as an ion conductor but also as a cathode supplement. This cooperative chemistry, enabled by the use of an ORNL-developed solid electrolyte, delivers an extra boost to the battery’s capacity, and extends the lifespan of the device.

“This bi-functional electrolyte revolutionizes the concept of conventional batteries and opens a new avenue for the design of batteries with unprecedented energy density,” said ORNL’s Chengdu Liang. [Read more…]

Former energy secretary compares global warming path to Russian roulette, with gun pointed at knee

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Steven Chu on Global Warming at Oak Ridge National Laboratory

During a lecture at Oak Ridge National Laboratory, former Energy Secretary Steven Chu compares global warming to Russian roulette, but with the gun pointed at a kneecap.

Former Energy Secretary Steven Chu sounded an alarm about global warming during a visit to Oak Ridge last week, comparing the current path to Russian roulette, but with the gun pointed at a knee—and with more bullets added each decade.

“Every decade you put in a bullet and you pull the trigger,” said Chu, a Stanford University professor who won a Nobel Prize in physics in 1997. “After four or five more decades, it could be fully loaded.”

The longest-serving secretary of the U.S. Department of Energy, Chu gave a lecture at Oak Ridge National Laboratory on Wednesday.

The globe is warming, and we might not feel the full effect of the greenhouse gases emitted by humans for another half-century or more, after the ocean has been warmed, Chu said.

“We’re going to glide to a temperature that we’re not really sure about, but I can guarantee that it’s warmer than it is today because of that ocean,” Chu said. “The damage that we’ve done today will not be seen for at least 50 years.” [Read more…]

Reminder: Change clocks, smoke alarm batteries this weekend

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With daylight savings time coming to an end this weekend and everyone setting their clocks back on Saturday night, the Oak Ridge Fire Department wants to remind everyone that it is time to change their smoke alarm batteries.

Smoke alarms should be checked at least once a month for proper operation and the batteries should be changed every six months. [Read more…]

ORNL finding goes beyond surface of oxide films

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Oxide Figure

This figure shows the spectroscopic measurement (current as a function of voltage) and this as a function of temperature. (Reproduced by permission of The Royal Society of Chemistry)

Better batteries, catalysts, electronic information storage and processing devices are among potential benefits of an unexpected discovery made by Oak Ridge National Laboratory scientists using samples isolated from the atmosphere.

Researchers at the U.S. Department of Energy lab learned that key surface properties of complex oxide films are unaffected by reduced levels of oxygen during fabrication—an unanticipated finding with possible implications for the design of functional complex oxides used in a variety of consumer products, said Zheng Gai, a member of DOE’s Center for Nanoscale Materials Sciences at ORNL.

The findings are detailed in a paper published in Nanoscale. [Read more…]

ORNL leading study focused on afterlife of electric vehicle batteries

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Once they’ve finished powering electric vehicles for hundreds of thousands of miles, it may not be the end of the road for automotive batteries, which researchers believe can provide continued benefits for consumers, automakers, and the environment.

Five used Chevrolet Volt batteries are at the heart of the Oak Ridge National Laboratory’s effort to determine the feasibility of a community energy storage system that would put electricity onto the grid. During the next year, researchers from ORNL, General Motors, and the ABB Group will conduct studies and compile data using a first-of-its-kind test platform officially commissioned Tuesday. [Read more…]

Spring forward, change smoke detector batteries

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With everyone preparing to move their clocks forward this weekend, the Oak Ridge Fire Department wants to remind everyone to change the battery in their smoke alarms as well.

In the state of Tennessee, 11 lives have been lost in residential structure fires since Feb. 28, so the State Fire Marshal’s Office is also encouraging all Tennesseans to change their smoke alarm batteries when they change their clocks Saturday night for daylight savings time.

[Read more…]