HMN 2025: How New methodology replaces nickel and cobalt in battery for cleaner, cheaper lithium-ion batteries

A crew of McGill University researchers, working with colleagues within the United States and South Korea, has developed a brand new method to make high-performance lithium-ion battery supplies that might assist section out costly and/or difficult-to-source metals like nickel and cobalt.

The crew’s breakthrough lies in creating a greater methodology of manufacturing “disordered rock-salt” (DRX) cathode particles, another battery materials. Until now, producers struggled to regulate the dimensions and high quality of DRX particles, which made them unstable and onerous to make use of in manufacturing settings. The researchers addressed that drawback by creating a way to supply uniformly sized, extremely crystalline particles with no grinding or post-processing required.

“Our methodology allows mass manufacturing of DRX cathodes with constant high quality, which is crucial for his or her adoption in electrical automobiles and renewable power storage,” stated Jinhyuk Lee, the paper’s corresponding creator and an Assistant Professor within the Department of Mining and Materials Engineering.

The researchers say the findings, revealed in Nature Communications, provide a promising path towards extra sustainable and cost-effective lithium-ion batteries, a essential part within the world shift to electrified transportation and using renewable energy.

A supplies breakthrough

The researchers devised a two-step molten salt course of to synthesize the DRX particles. Molten salt allows higher {control} over particle formation, bettering high quality and effectivity. First, the researchers promoted nucleation (the formation of small, uniform crystals) of the particles, after which restricted their development. This allowed them to supply battery-ready particles which are smaller than 200 nanometers, a dimension thought of necessary for unlocking these supplies’ efficiency in lithium-ion batteries.

“We developed the primary methodology to straight synthesize extremely crystalline, uniformly dispersed DRX single particles with out the necessity for post-synthesis grinding,” stated Lee. “This morphological {control} enhances each battery efficiency and the consistency of large-scale DRX cathode manufacturing.”

When examined in battery cells, the brand new supplies maintained 85 p.c of their capability after 100 charge-discharge cycles. That’s greater than double the efficiency of DRX particles produced utilizing older strategies.

From lab to business

The analysis was carried out by a McGill crew in collaboration with scientists at Stanford University’s SLAC National Accelerator Laboratory and the Korea Advanced Institute of Science and Technology (KAIST). It was supported partially by Wildcat Discovery Technologies, a U.S.-based battery firm fascinated about scaling DRX applied sciences for business use.

The crew’s methodology might additionally make the method extra scalable and power environment friendly, addressing a key hurdle to the widespread adoption of DRX cathodes. Given the worldwide demand for batteries, that might have a significant ripple impact.

“Acceptance of our work highlights each the basic perception and industrial potential of the strategy,” stated Hoda Ahmed, the lead creator of the paper and a Ph.D. scholar in McGill’s Department of Materials Engineering. “It shifts the sector towards scalable manufacturing.”

With this synthesis technique, the researchers say the door is now open to next-generation lithium-ion batteries which are extra sustainable, extra reasonably priced, and simpler to supply at scale.

“Nucleation-promoting and growth-limiting synthesis of disordered rock-salt Li-ion cathode supplies,” by Hoda Ahmed, Moohyun Woo, Raynald Gauvin, George Demopoulos, Jinhyuk Lee, and colleagues, was revealed in Nature Communications.