Samsung SDI has revealed progress in the development of lithium-metal batteries, announcing a research advance that could help resolve long-standing issues related to durability and safety. The company confirmed that its research and development division worked alongside Columbia University to engineer a revised electrolyte system aimed at improving recharge stability and reducing operational risks.

Lithium-metal batteries are widely regarded as a potential successor to current nickel-cobalt-manganese chemistries because they can deliver energy density approximately 1.6 times greater. This higher capacity makes them attractive for compact, high-performance electronics including advanced wearables and next-generation portable devices. Despite this promise, commercial adoption has been limited due to short cycle life, with many prototypes enduring only a few dozen charge and discharge cycles before degradation.

To tackle these weaknesses, the joint research team developed a fluorine-based gel polymer electrolyte that forms a protective layer on the surface of the anode. This layer strengthens the internal interface of the battery and helps prevent the growth of dendrites, which are fine, needle-like crystalline structures that can emerge during charging. Dendrite formation is considered one of the primary causes of performance decline and safety hazards in lithium-metal cells.

By stabilising the anode surface and limiting dendrite development, the new formulation is designed to extend battery lifespan while enhancing overall safety. According to Samsung SDI, the findings mark tangible progress towards making lithium-metal batteries viable for broader commercial use.

Industry analysts suggest that overcoming these technical barriers could significantly influence the future of high-energy-density storage, particularly in sectors demanding lighter and more powerful battery solutions.

The research has been published in Joule, an international energy journal established by Cell Press in 2017. The study was co-authored by senior members of Samsung SDI’s research team, including Vice President Lee Seung-woo and Principal Researcher Woo Hyun-sik, alongside representatives from SDI R&D America and Professor Yuan Yang of Columbia University.

Joo Yong-lak, Executive Vice President and head of Samsung SDI’s R&D Centre, described the peer-reviewed publication as an important milestone. He said the academic recognition reinforces the credibility of the company’s work in addressing safety concerns that have historically slowed the commercialisation of lithium-metal technology. He added that Samsung SDI intends to continue accelerating next-generation battery innovation through its global research partnerships.