Regensburg 2022 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 18: Poster Session 2

MM 18.22: Poster

Dienstag, 6. September 2022, 17:30–20:00, P2

Mild-temperature solution-assisted encapsulation of phosphorus into ZIF-8 derived porous carbon as lithium-ion battery anode — •Chengzhan Yan¹, Shun Wang², and Yong Lei¹ — ¹Fachgebiet Angewandte Nanophysik, Institut für Physik & IMN MacroNano, Technische Universität Ilmenau, 98693 Ilmenau, Germany. — ²Key Laboratory of Carbon Materials of Zhejiang Province, Institute of Materials and Industrial Technologies, Wenzhou University, Wenzhou, Zhejiang, 325027, China.

Phosphorus in the form of polyphosphides anions (PP) is encapsulated into ZIF-8 derived porous carbon through a solution-assisted etching diffusion process under a mild temperature, and the composites with a high phosphorous content of 30 wt% exhibit a high capacity, improved cycling stability as well as a good rate performance as a lithium-ion battery anode. Herein, a series of morphological and structural characterizations are applied to analyze the differences between individual MOF-derived carbon hosts with the whole body that has PP inside the pore. Subsequently, their electrochemical performance is also compared. The results of the above-mentioned material analysis and application practices jointly confirmed the superiority of this mild temperature solution-assisted encapsulation of phosphorus method. In summary, this work provides a new strategy to design and fabricate phosphorus-based electrodes for batteries beyond lithium-ion batteries.