A comparative study on LiFePO4/C by in-situ coating with different carbon sources for high-performance lithium batteries

Yanshuang Meng, Jun Xia, Lei Wang, Gongrui Wang, Fuliang Zhu, Yue Zhang

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

LiFePO4/C materials are synthesized via in-situ coating of LiFePO4 by using 1-butyl-3-methylimidazolium dicyanamide ([BMIm][N(CN)2]) and glucose as carbon sources, respectively. The structure characterization results indicate that the carbon sources have no effect on the LiFePO4 particles, but have remarkable influence on the coated carbon films. It is found that the [BMIm][N(CN)2] carbon source leads to ultrathin (1–2 nm), uniform and highly graphitized carbon films. Due to this unique structure, the electrode materials fabricated by using [BMIm][N(CN)2] exhibit a superior electrode reaction reversibility, a capacity retention of 160.6 mAhg−1 (1.47% decay rate) after 50 cycles and a specific discharge capacity of 143.6 mAhg−1 at 1C, which is much better than the performance of the electrode materials synthesized with glucose.

Original languageEnglish
Pages (from-to)96-103
Number of pages8
JournalElectrochimica Acta
Volume261
DOIs
StatePublished - Jan 20 2018

Scopus Subject Areas

  • General Chemical Engineering
  • Electrochemistry

Keywords

  • Graphitized carbon films
  • In-situ coating
  • Ionic liquid
  • Lithium iron phosphate
  • Lithium-ion batteries

Fingerprint

Dive into the research topics of 'A comparative study on LiFePO4/C by in-situ coating with different carbon sources for high-performance lithium batteries'. Together they form a unique fingerprint.

Cite this