Skip to main navigation Skip to search Skip to main content

Lithium-conducting covalent-organic-frameworks as artificial solid-electrolyte-interphase on silicon anode for high performance lithium ion batteries

Qing Ai (Co-first Author), Qiyi Fang (Co-first Author), Jia Liang, Xinyu Xu, Tianshu Zhai, Guanhui Gao, Hua Guo, Guifang Han, Lijie Ci*, Jun Lou*

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

In this paper, we employ lithium-conducting covalent-organic-framework (COF) as the coating layer for silicon (Si) nanoparticles, which serve as artificial solid electrolyte interphase (SEI) for Si electrode. The COF coating layer reduces the electrolyte decomposition, thus the coulombic efficiency (CE) and cycling stability of the Si electrodes are dramatically improved. Additionally, the superior lithium–ion conductivity of COF can enhance the lithium-ion transportation kinetics of Si electrode. COF coated Si presented a high specific capacity of 1864 mAh g−1 at a high current density of 2000 mA g−1 and high capacity retention of more than 60% after 1000 cycles.

© 2020 Published by Elsevier Ltd.
Original languageEnglish
Article number104657
Number of pages7
JournalNano Energy
Volume72
Online published3 Mar 2020
DOIs
Publication statusPublished - Jun 2020
Externally publishedYes

Funding

Q. Ai, Q. Fang, J. Liang, X. Xu, T. Zhai, H. Guo, J. Lou gratefully acknowledge the financial support by the ARL Cooperative Agreement W911NF-18-2-0062 for COF synthesis, and the Welch foundation grant C-1716 and Department of Energy EERE-VTO Contract DE-EE0008864 for materials characterization. We thank Dr. Ming Tang and Fan Wang at Rice University for their support on electrochemical measurements. We also thank Yifeng Liu and Bo Chen for their support to the Brunauer–Emmett–Teller test. This work was conducted in part using resources of the Shared Equipment Authority at Rice University.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Research Keywords

  • Artificial solid electrolyte interphase
  • Covalent-organic-frameworks
  • Lithium-ion batteries
  • Si anode

Fingerprint

Dive into the research topics of 'Lithium-conducting covalent-organic-frameworks as artificial solid-electrolyte-interphase on silicon anode for high performance lithium ion batteries'. Together they form a unique fingerprint.

Cite this