Engineering Carbon-Doped Hollow Black TiO2 through PVP-Assisted Morphology Tuning for Long-Life Lithium-Ion Battery Anodes
발표자
제갈석 (인하대학교)
연구책임자
윤창민 (인하대학교)
초록
내용
Herein, we report a PVP-assisted synthesis of carbon-doped double-shell hollow black TiO2 (c-HB-TiO2) for durable and high-rate lithium-ion battery (LIB) anodes. Polyvinylpyrrolidone (PVP) supports the hierarchical morphology and promotes uniform carbon doping during thermal treatment. This design strategy enhances lithium-ion transport via engineered oxygen vacancies, shortened diffusion paths, and interconnected porosity. Electrochemical characterization reveals that the c-HB-TiO2-based anode achieves a high reversible capacity of 177.7 mAh g−1 at 1 C and 94.5% retention over 300 cycles. Additionally, the anode showed reduced charge-transfer resistance and a high diffusion coefficient of 1.69×10−10 cm2 s−1. These findings demonstrate the effectiveness of PVP-assisted morphology engineering in developing advanced dblack TiO2 anodes for next-generation LIBs.
- 본 연구는 2025년도 산업통상자원부 및 산업기술기획평가원(KEIT) 연구비 지원에 의한 연구임(RS-2022-00156073).