Issue 9, 2021

In situ synthesis of graphitic C3N4–poly(1,3-dioxolane) composite interlayers for stable lithium metal anodes

Abstract

Lithium metal anodes (LMAs) possess the largest energy density among all anode candidates, while dendrite growth is a huge barrier in the direct application of LMAs in batteries. Herein, an ultrathin graphitic C3N4–poly(1,3-dioxolane) (CN–PDOL) composite interlayer was in situ synthesized by cationic ring-opening polymerization upon lithium metal anodes. Flexible PDOL could isolate electrolytes, remitting the corrosion reactions and consumption of electrolytes, while g-C3N4 nanoflakes could reduce the crystallinity of PDOL, increase ion-conductivity and uniform Li-ion fluxes. At a current density of 3 mA cm−2, the synergistic effect of CN and PDOL could enable 850 h stable Li plating/stripping behavior at an overpotential of 70 mV. In this work, a facile and accessible design of a composite buffer layer was developed for lithium metal anodes, which might be of interest to a broad community investigating surface modifications.

Graphical abstract: In situ synthesis of graphitic C3N4–poly(1,3-dioxolane) composite interlayers for stable lithium metal anodes

Supplementary files

Article information

Article type
Paper
Submitted
10 feb 2021
Accepted
25 mar 2021
First published
25 mar 2021

Sustainable Energy Fuels, 2021,5, 2433-2440

In situ synthesis of graphitic C3N4–poly(1,3-dioxolane) composite interlayers for stable lithium metal anodes

Z. Zhuang, Y. Tang, B. Ju and F. Tu, Sustainable Energy Fuels, 2021, 5, 2433 DOI: 10.1039/D1SE00212K

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