논문 해외 국제전문학술지(SCI급) New high‐performance Pb‐based Nanocomposite anode enabled by wide‐range Pb redox and Zintl phase transition
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2021-01
- 저자명 Jinhyup Han†, Jehee Park†, Seong‐Min Bak, Seoung‐Bum Son, Jihyeon Gim, Cesar Villa, Xiaobing Hu, Vinayak P Dravid, Chi Cheung Su, Youngsik Kim, Christopher Johnson, Eungje Lee
- 학술지명 Advanced Functional Materials
- 발행처명 Wiley
- 발행국가 해외
- 논문언어 외국어
- 원문 링크 https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.202005362
홈페이지논문 초록 (Abstract)
This paper describes a new, high-performance, Pb-based nanocomposite anode material for lithium-ion batteries. A unique nanocomposite structure of Pb@PbO core-shell nanoparticles in a carbon matrix is obtained by using a simple high-energy ball milling method using the low-cost starting materials PbO and carbon black. Electrochemical performance tests show its excellent reversible capacity (≈600 mAh g−1) and cycle stability (92% retention at 100th cycle), which are one of the best values reported for Pb-based anodes in the literature. Synchrotron X-ray diffraction and absorption techniques revealed the detailed lithium storage mechanism that can be highlighted with the unexpectedly wide reversible Pb redox range (between Pb2+ and Pb4−) and the evolution of Zintl-type LiyPb structures during the electrochemical lithium reaction. The results provide new insights into the lithium storage mechanism of these Pb-based materials and their potential as low-cost, high-performance anodes.