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

Journal Article · · Nano Energy
 [1];  [2];  [2];  [2];  [2];  [2];  [2]; ORCiD logo [3];  [3];  [2]
  1. Rice University, Houston, TX (United States); Shandong University, Jinan (China); Rice University
  2. Rice University, Houston, TX (United States)
  3. Shandong University, Jinan (China)

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. Here, 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.

Research Organization:
Rice University, Houston, TX (United States)
Sponsoring Organization:
USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO); Welch foundation
Grant/Contract Number:
EE0008864
OSTI ID:
1985467
Journal Information:
Nano Energy, Journal Name: Nano Energy Vol. 72; ISSN 2211-2855
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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