Supersonically spray-coated zinc ferrite/graphitic-carbon nitride composite as a stable high-capacity anode material for lithium-ion batteries

Bhavana Joshi, Edmund Samuel, Tae Gun Kim, Chan Woo Park, Yong Il Kim, Mark T. Swihart, Wooyoung Yoon, Suk Goo Yoon

Research output: Contribution to journalReview article

5 Citations (Scopus)

Abstract

This manuscript reports the preparation, characterization, and testing of stable high-capacity lithium-ion battery anodes based on graphitic carbon nitride (g-CN) nanosheets hosting ZnFe2O4 nanoparticles (ZFCN). The ZFCN is prepared by a one-pot thermal process, then supersonic cold spraying is used to rapidly deposit films with a lamellar morphology that allows enhanced capacity retention by preventing particle agglomeration. The presence of g-CN nanosheets minimizes degradation of ZnFe2O4 by providing a buffering space during the lithiation/delithiation process. The ZFCN composite anodes exhibit first reversible capacities of 1550 mAh·g−1 at 50 mA·g−1 and up to 934 mAh·g−1 at 1000 mA·g−1 after 20 cycles. The superior electrochemical performance and capacity retention (88% after 160 cycles at 100 mA·g−1 relative to the first reversible capacity) are attributed to highly reversible alloying/conversion mechanisms. The combination of high performance and stability with the use of low-cost earth-abundant elements and scalable processing approaches gives this ZFCN composite immense potential for use as a stable high-performance anode material for lithium-ion batteries.

Original languageEnglish
Pages (from-to)525-534
Number of pages10
JournalJournal of Alloys and Compounds
Volume768
DOIs
Publication statusPublished - 2018 Nov 5

Keywords

  • Graphitic carbon nitride
  • Lithium-ion battery
  • Supersonic cold spraying
  • ZnFeO

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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