Carbon nanotubes functionalized with maleic anhydride chelated silver nanoparticles as conductive additives for polyanion-based lithium-ion batteries

Chih Lien Chiang, Cheng Chien Wang, Chuh Yung Chen

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Silver nanoparticles on the surface of carbon nanotubes functionalized with maleic anhydride through plasma-induced grafting process, named CNTs-MA-Ag, were synthesized. Effects of CNTs-MA-Ag as conductive additives on the performance of LiFePO4 polyanion-based lithium-ion batteries was studied. X-ray diffraction analysis, transmission electron microscopy, and UV-vis spectroscopy were used to characterize Ag nanoparticles on the surface of CNTs-MA-Ag. Morphology of LiFePO4/CNTs-MA-Ag electrode was observed via scanning electronic microscopy. Electrochemical impedance spectroscopy analysis was conducted to acquire the charge transfer resistance of composite cathode. The specific capacity, cyclic stability and rate performance of LiFePO4/CNTs-MA-Ag coin cells were evaluated through galvanostatic charge/discharge process. LiFePO4/CNTs-MA-Ag (5 wt%) coin cells have specific capacity of 148 mAhg−1 at 0.1C with a capacity retention ratio of 98.6% after 100 cycles, and rate capacity of 113.6 and 77.8 mAhg−1 at 1C and 2C, respectively. Taken together, CNTs-MA-Ag can serve as excellent conductive additives to improve performance of polyanion-based LIBs.

Original languageEnglish
Pages (from-to)42-49
Number of pages8
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume238-239
DOIs
Publication statusPublished - 2018 Dec

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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