In this paper, the structural optimization and experimental validation of lightweight, high stiffness rollers for roll-to-roll(R2R) processing of lithium metal electrodes are presented. Precise dimensional control of electrode thickness below 50㎛ is essential for next-generation high energy density batteries, yet elastic recovery during rolling hinders the achievement of target specifications. To address this challenge, finite element(FE) analysis was employed to determine the optimal rolling gap and roller geometry, and the results were verified through R2R experiments. Simulations indicated that a rolling gap of 153㎛ yielded a final sheet thickness of about 49.6㎛, meeting the design requirement. Experimental results confirmed the validity of the numerical model, with thickness measurements deviating less than ±10% from FE analysis predictions. These findings demonstrate that the proposed roller design not only ensures thickness precision but also improves system efficiency, offering practical guidelines for scalable lithium metal electrode manufacturing.

Abstract
1. 서 론
2. 리 튬 메 탈 롤투롤 압연 해석 조건
    2.1 재료물성 및 압연조건
    2.2 유한요소 모 델 및 압연 해석 경계조건
3. 롤투롤 압연 롤러의 경량 구조해석
    3.1 중실형 롤러 모 델 및 압연 해석
    3.1 중공형 롤러 모 델 및 압연 해석
4. 리 튬 메 탈 시트의 롤투롤 압연시험
5. 결 론
후 기
References

• 심은비(Undergraduate School, Dept. of Aeronautical and Mechanical Engineering, Cheongju University) | Eunbi Sim
• 김태형(Professor, Dept. of Aeronautical and Mechanical Engineering, Cheongju University) | Taehyung Kim Corresponding author