LG Chem Reveals Groundbreaking Technology to Improve Solid-State Battery Commercialization and Performance

A spray-recrystallization technique developed by LG Chem and Hanyang University produces homogenous solid electrolyte particles, significantly increasing battery capacity and accelerating commercialization efforts.

By increasing the homogeneity of solid electrolyte particles, LG Chem has reported a major advancement in the development of core technologies for the commercialization of solid-state batteries.

The results of this study, which was carried out in collaboration with Professor Song Tae-seop's research team at Hanyang University and the LG Chem Next Generation Materials Research Center, significantly boost the likelihood of commercializing all-solid-state batteries. An electrolyte solution is sprayed into tiny droplets, which evaporate to form homogeneous spherical particles.

Manipulating solid electrolyte particle size via spray-recrystallization: Toward dependable and high energy density all-solid-state batteries is the title of the work.

The liquid electrolytes used in traditional lithium batteries are replaced by solid electrolytes in all-solid-state batteries. Although they are safe and energy-efficient, if the particle size is uneven, their solid nature may cause cavities inside the battery, which could lower performance.

The research team from LG Chem and Hanyang University used spray-recrystallization technology in the electrolyte particle production process to address this issue.

Using spray recrystallization technology, an electrolyte solution is sprayed into tiny droplets, which are subsequently evaporated to create spherical, homogenous particles. The unequal size of electrolyte particles made with traditional techniques is successfully addressed by this.

Lithium ions can travel more freely because the homogeneous electrolyte sticks to the positive electrode active material more firmly. The fundamental capacity rises by about 15% and the fast-discharge capacity by about 50% when compared to batteries that use standard electrolytes. One of a battery's most important performance characteristics for use in high-power devices is its fast-discharge capacity.

LG Chem intends to expedite the development of solid electrolytes and the commercialization of all-solid-state batteries based on this technology.

According to Shin Hak-cheol, vice chairman of LG Chem, this research is a significant accomplishment that resolves the crucial issue of commercializing all-solid-state batteries. LG Chem will become more competitive in next-generation battery technology and take the lead in the global market.