Here, we report the development of a new and low-cost core-shell structure for lithium-ion battery anodes using silicon waste sludge and the Ti-ion complex. X-ray diffraction (XRD) confirmed the raw waste silicon sludge powder to be pure silicon without other metal impurities and the particle size distribution is measured to be from 200 nm to 3 μm by dynamic light scattering (DLS). As a result of pulverization by a planetary mill, the size of the single crystal according to the Scherrer formula is calculated to be 12.1 nm, but the average particle size of the agglomerate is measured to be 123.6 nm. A Si/TiO2 core-shell structure is formed using simple Ti complex ions, and the ratio of TiO2 peaks increased with an increase in the amount of Ti ions. Transmission electron microscopy (TEM) observations revealed that TiO2 coating on Si nanoparticles results in a Si-TiO2 core-shell structure. This result is expected to improve the stability and cycle of lithium-ion batteries as anodes.

Abstract
1. 서 론
2. 실험과정
    2.1 실리콘 나노 입자 제조 방법
    2.2 졸-젤 법을 이용한 Si/TiO2 분말 제조 방법
    2.3 분말 특성 분석
3. 결과 및 고찰
4. 결 론
References

• 서동혁(단국대학교 에너지공학과) | Dong Hyeok Seo (Department of Energy Engineering, Dankook University)
• 임현민(단국대학교 에너지공학과) | Hyeon Min Yim (Department of Energy Engineering, Dankook University)
• 나호윤(단국대학교 에너지공학과) | Ho Yoon Na (Department of Energy Engineering, Dankook University)
• 김원진(단국대학교 에너지공학과) | Won Jin Kim (Department of Energy Engineering, Dankook University)
• 김륜나(단국대학교 에너지공학과) | Ryun Na Kim (Department of Energy Engineering, Dankook University)
• 김우병(단국대학교 에너지공학과) | Woo-Byoung Kim (Department of Energy Engineering, Dankook University) Corresponding Author