Although high-nickel cathodes accommodate larger capacities, volume strain from repeated expansion and contraction can result in poor stability and safety concerns. However, nickel-based cathodes come with their own problems, such as poor heat tolerance, which can lead to oxidization of battery materials, thermal runaway and even explosion. All of this points to a need for alternatives.”
“Research has also shown that cobalt can lead to oxygen release at high voltage, causing damage to lithium-ion batteries. “Electric vehicle manufacturers are eager to curtail the use of cobalt in their battery packs not only for cost reduction but to counter the child labor practices used to mine the mineral,” Xin said. The mineral, which is chemically suited for the purpose of stabilizing lithium-ion battery cathodes, is mined almost exclusively in the Democratic Republic of Congo under abusive and inhumane conditions. “This achievement resolves long-standing safety and stability concerns around high-nickel battery materials, paving the way for broad-based commercial applications.”Ĭobalt is one of the most significant supply chain risks threatening widespread adoption of electric cars, trucks and other electronic devices requiring batteries, according to the paper’s authors. “Through a technique we refer to as ‘high-entropy doping,’ we were able to successfully fabricate a cobalt-free layered cathode with extremely high heat tolerance and stability over repeated charge and discharge cycles,” said co-author Huolin Xin, UCI professor of physics & astronomy. In a paper published today in Nature, the scientists describe how they overcame thermal and chemical-mechanical instabilities of cathodes composed substantially of nickel – a common substitute for cobalt – by mixing in several other metallic elements. 21, 2022 – Researchers at the University of California, Irvine and four national laboratories have devised a way to make lithium-ion battery cathodes without using cobalt, a mineral plagued by price volatility and geopolitical complications. national laboratories, Huolin Xin, UCI professor of physics & astronomy, has found a way to fabricate lithium-ion batteries without using cobalt, a rare, costly mineral extracted under inhumane conditions in Central Africa.
Cobalt-free Cathode Could Lead to Safer, Longer-lasting Batteries for Electric Vehicles Researchers have devised a way to make lithium-ion battery cathodes without using cobalt, a mineral plagued by price volatility and geopolitical complications For more information on Brookhaven’s role in this research, contact Cara Laasch ( 63). Department of Energy Office (DOE) Office of Science user facilities located at DOE’s Brookhaven Lab.
WHO MINES COBALT FOR BATTERIES FULL
They characterized their materials using CFN’s electron microscopy capabilities and three NSLS-II beamlines, Full Field X-ray Imaging (FXI), Quick X-ray Absorption and Scattering (QAS), and Submicron Resolution X-ray Spectroscopy (SRX) beamlines. To investigate the new cathode material, the team collaborated with researchers from the Center of Functional Nanomaterials (CFN) and National Synchrotron Light Source II (NSLS-II).
A team of researchers have devised a way to make lithium-ion battery cathodes without using cobalt, a mineral plagued by price volatility and geopolitical complications. The following news release was originally issued by the University of California, Irvine.
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