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LG화학, '전고체 배터리' 상용화 핵심 기술 개발

LG Chem develops core technology for commercialization of solid-state batteries

ZD Net Korea | Local Language | News | Nov. 26, 2025 | UndeterminedTech Development/Adoption

LG Chem announced on November 25, 2025, that it has developed a technology that significantly enhances the performance of solid-state batteries by uniformly controlling the particle size of the solid electrolyte, a critical component of these batteries. The research, published in Advanced Energy Materials, was conducted jointly with Professor Tae-Seop Song's team at Hanyang University and is seen as a major step toward the commercialization of solid-state batteries.

Solid-state batteries replace the liquid electrolyte found in conventional lithium batteries with a solid electrolyte, which offers safety and high energy efficiency benefits. However, non-uniform particle sizes in the solid electrolyte can create gaps within the battery cell, leading to performance degradation. LG Chem’s new spray recrystallization method produces uniformly sized spherical electrolyte particles by spraying the electrolyte solution into fine droplets and evaporating the solvent, improving lithium-ion movement and reducing internal gaps.

The uniform electrolytes created by this method adhere better to the cathode material, resulting in about a 15% increase in basic battery capacity and a 50% increase in high-rate discharge capacity, a critical metric for high-power device applications. LG Chem intends to use this technology to accelerate solid electrolyte development and push further toward solid-state battery commercialization.

Shin Hak-cheol, LG Chem's Vice Chairman, highlighted the achievement as a resolution of a core challenge for commercializing solid-state batteries and stated the company’s commitment to strengthening its competitiveness in next-generation battery technologies and leading the global market.

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