How quickly a battery electrode decays depends on properties of individual particles in the battery – at first. Later on, the network of particles matters more.
Storing the rechargeable batteries at sub-freezing temperatures can crack the battery cathode and separate it from other parts of the battery, a new study shows.
Berkeley Lab scientists have made significant progress in developing battery cathodes using a new class of materials that provide batteries with the same if not higher energy density than conventional lithium-ion batteries but can be made of inexpensive and abundant metals. Known as DRX, which stands for disordered rocksalts with excess lithium, this novel family of materials was invented less than 10 years ago and allows cathodes to be made without nickel or cobalt.
Lithium-ion batteries that function as high-performance power sources for renewable applications, such as electric vehicles and consumer electronics, require electrodes that deliver high energy density without compromising cell lifetimes. In the Journal of Vacuum Science and Technology A, researchers investigate the origins of degradation in high energy density LIB cathode materials and develop strategies for mitigating those degradation mechanisms and improving LIB performance.
A next-generation battery that will power our electric devices longer and, potentially, make them more affordable and accessible. That’s the focus of Koffi Pierre Yao’s research which has earned a $1 million grant from the U.S. Department of Energy’s Advanced Vehicle Technologies Research program.
What happens if an electric car burns in a road tunnel or an underground car park? In the Hagerbach test tunnel in Switzerland, Empa researchers and tunnel safety expert Lars Derek Mellert set fire to battery cells of electric cars, analyzed the distribution of soot and smoke gases and the chemical residues in the extinguishing water.
Lithium-ion batteries contain salts rich in fluorine, which decompose in humid air to toxic, highly corrosive hydrogen fluoride. The hazardous nature of this substance makes recycling more difficult and more expensive. A research project entitled “Fluoribat” is now being launched at Empa to solve this problem. This could help to make the life cycle of a rechargeable battery less expensive and at the same time safer.
Researchers from West Virginia University are using neutron scattering at Oak Ridge National Laboratory to study novel materials called high entropy oxides, or HEOs. Their goal is to collect insights into how the atoms in the HEOs bind together and whether the materials can be used to develop useful applications to improve power plant operations.
Since 2011, Nikhilendra (Nik) Singh has been a senior scientist in the Materials Research Department at the Toyota Research Institute of North America. His quest to find alternatives to lithium-ion batteries has brought him to Brookhaven Lab’s Center for Functional Nanomaterials (CFN).
But some of the most-studied SSEs are themselves flammable, leaving the original safety concern unaddressed. Researchers now report in ACS’ Nano Letters that they have developed an SSE that won’t burn up.
A new paper-thin radio-frequency detector, developed by researchers at Sandia National Laboratories and designed to work inside a lithium-ion battery, provides information about the battery’s health while charging and discharging.
Penn State researchers have developed a novel method that could enable the widespread use of silicon-based anodes, which allow electricity to enter a device, in rechargeable lithium ion batteries.
On October 9, the Nobel committee recognized work in developing lithium-ion batteries. These batteries have enabled a huge number of advances, including mobile phones and plug-in electric vehicles. The DOE Office of Science is proud to have supported research by Drs. Whittingham and Goodenough and to have funded research by many scientists who have built upon their innovations.
The 2019 Nobel Prize in Chemistry has been awarded to M. Stanley Whittingham, distinguished professor of chemistry and materials science at Binghamton University, State University of New York.
On behalf of the American Chemical Society (ACS), President Bonnie Charpentier, Ph.D., congratulates today’s winners of the Nobel Prize in Chemistry.
A pair of academic researchers have federal funding for their startup, which will make battery parts from a unique, patented material called graphene monoxide. Their material dramatically boosts the energy storage capacity of li-ion batteries.