ORNL researchers develop new class of cobalt-free cathodes with enhanced energy density for next-gen Li-ion batteries: NFA
Oak Ridge National Laboratory (ORNL) researchers have developed a new family of cobalt-free cathodes with the potential to replace the cobalt-based cathodes typically found in today’s lithium-ion batteries that power electric vehicles and consumer electronics.
Called NFA for nickel, iron and aluminum the new class is a derivative of lithium nickelate and can be used to make lithium-ion battery cathodes. These novel cathodes are designed to be fast-charging, energy-dense, cost-effective, and longer-lasting. Papers on the work are published in
Advanced Materials and the
E-Mail
IMAGE: Oak Ridge National Laboratory researchers have developed a new class of cobalt-free cathodes called NFA that are being investigated for making lithium-ion batteries for electric vehicles. view more
Credit: Andy Sproles/ORNL, U.S. Dept. of Energy
Oak Ridge National Laboratory researchers have developed a new family of cathodes with the potential to replace the costly cobalt-based cathodes typically found in today s lithium-ion batteries that power electric vehicles and consumer electronics.
The new class called NFA, which stands for nickel-, iron- and aluminum-based cathode, is a derivative of lithium nickelate and can be used to make the positive electrode of a lithium-ion battery. These novel cathodes are designed to be fast charging, energy dense, cost effective, and longer lasting.
PNNL: single-crystal nickel-rich cathode holds promise for next-generation Li-ion batteries
Science.
High-energy nickel (Ni)–rich cathode will play a key role in advanced lithium (Li)–ion batteries, but it suffers from moisture sensitivity, side reactions, and gas generation. Single-crystalline Ni-rich cathode has a great potential to address the challenges present in its polycrystalline counterpart by reducing phase boundaries and materials surfaces. However, synthesis of high-performance single-crystalline Ni-rich cathode is very challenging, notwithstanding a fundamental linkage between overpotential, microstructure, and electrochemical behaviors in single-crystalline Ni-rich cathodes. We observe reversible planar gliding and microcracking along the (003) plane in a single-crystalline Ni-rich cathode. The reversible formation of microstructure defects is correlated with the localized stresses induced by a concentration gradient of Li atoms in the lattice, providing clues to
Single-crystal technology holds promise for next-generation lithium-ion batteries eurekalert.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from eurekalert.org Daily Mail and Mail on Sunday newspapers.