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Terephthalic Acid Intercalated CoNi-LDH Materials for Improved Li-O2 Battery.

Authors
  • Lin, Yuran1
  • Zhang, Yu2
  • Bao, Jindi1
  • Qiu, Jiachen1
  • Guo, Donghua1
  • Zhang, Shuting1
  • Yuan, Mengwei1
  • Sun, Genban1
  • Nan, Caiyun1
  • 1 Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China. , (China)
  • 2 Department of Chemistry, Tsinghua University, Beijing, 100084, China. , (China)
Type
Published Article
Journal
Small
Publisher
Wiley (John Wiley & Sons)
Publication Date
Nov 01, 2023
Volume
19
Issue
48
Identifiers
DOI: 10.1002/smll.202302979
PMID: 37528713
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

CoNi-LDH (layered CoNi double hydroxides) hollow nanocages with specific morphology are obtained by Ni ion etching of ZIF-67 (Zeolitic imidazolate framework-67). The structure of the layered materials is further modified by molecular intercalation. The original interlayer anions are replaced by the ion exchange effect of terephthalic acid, which helps to increase the interlayer distance of the material. The intercalated cage-like structures not only benefit for the storage of oxygen, and the discharge product reaction, but also have more support between the material layers. The experimental results show that the excessive use of intercalation agent will affect structural stability of the intercalated CoNi-LDH. By adjusting the amount of terephthalic acid, the intercalated CoNi-LDH-2 (with 0.02 mmol terephthalic acid intercalated) is not easy to collapse after 209 cycles and shows the best electrochemical performance in Li-O2 battery. © 2023 Wiley-VCH GmbH.

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