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Kim, Youngsik
YK Research
Research Interests
  • Ionic conducting ceramic electrolyte membranes, energy conversion and storage materials and devices

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New High-Performance Pb-Based Nanocomposite Anode Enabled by Wide-Range Pb Redox and Zintl Phase Transition

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Title
New High-Performance Pb-Based Nanocomposite Anode Enabled by Wide-Range Pb Redox and Zintl Phase Transition
Author
Han, JinhyupPark, JeheeBak, Seong-MinSon, Seoung-BumGim, JihyeonVilla, CesarHu, XiaobingDravid, Vinayak P.Su, Chi CheungKim, YoungsikJohnson, ChristopherLee, Eungje
Issue Date
2021-01
Publisher
WILEY-V C H VERLAG GMBH
Citation
ADVANCED FUNCTIONAL MATERIALS, v.31, no.2, pp.2005362
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 (approximate to 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 Pb(2+)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.
URI
https://scholarworks.unist.ac.kr/handle/201301/48307
URL
https://onlinelibrary.wiley.com/doi/10.1002/adfm.202005362
DOI
10.1002/adfm.202005362
ISSN
1616-301X
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