Supersonically sprayed Fe2O3/C/CNT composites for highly stable Li-ion battery anodes

  • Chanwoo Park
  • , Edmund Samuel
  • , Bhavana Joshi
  • , Taegun Kim
  • , Ali Aldalbahi
  • , Mohamed El-Newehy
  • , Woo Young Yoon*
  • , Sam S. Yoon
  • *Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A synthesized Fe2O3/C composite integrated with carbon nanotubes (CNTs) is deposited via cold spraying and used as a highly stable Li-ion battery anode. The X-ray diffraction pattern of the anode material confirms the coexistence of CNTs and mixed Fe2O3 phases (α and γ). Morphology and elemental mapping analyses are performed using scanning electron microscopy and transmission electron microscopy, respectively. The Fe2O3/C/CNT composite presents the high discharge capacity of 1598 mA·h·g−1 at the current density of 100 mA·g−1. The anode exhibits excellent capacity retention values of 83% and 88% after 100 and 1000 charge–discharge cycles under current densities of 100 and 1000 mA·g−1, respectively. The electrochemical performance of the synthesized Fe2O3/C/CNT composite is superior to that of the Fe2O3/CNT composite prepared by mixing commercially available Fe2O3 and CNTs. This is attributed to the shorter diffusion path of the Li-ions in the relatively smaller Fe2O3 particles and faster charge transfer through the highly conductive CNTs.

    Original languageEnglish
    Article number125018
    JournalChemical Engineering Journal
    Volume395
    DOIs
    Publication statusPublished - 2020 Sept 1

    Bibliographical note

    Funding Information:
    This research was supported by the Technology Development Program to Solve Climate Changes of the National Research Foundation ( NRF ) funded by the Ministry of Science, ICT & Future Planning ( NRF-2016M1A2A2936760 ) and NRF-2020R1A2C1012838 . The authors acknowledge King Saud University, Riyadh, Saudi Arabia, for funding this work through Researchers Supporting Project number (RSP-2019/30)

    Publisher Copyright:
    © 2020 Elsevier B.V.

    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

    Keywords

    • CNT
    • Cold spray
    • FeO
    • Lithium-ion battery

    ASJC Scopus subject areas

    • General Chemistry
    • Environmental Chemistry
    • General Chemical Engineering
    • Industrial and Manufacturing Engineering

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