Reduced graphene oxide composite aerogels for lithium-ion batteries

ÇAKMAK Ö.

JOURNAL OF POROUS MATERIALS, vol.29, no.6, pp.1771-1778, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 29 Issue: 6
  • Publication Date: 2022
  • Doi Number: 10.1007/s10934-022-01293-3
  • Journal Name: JOURNAL OF POROUS MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.1771-1778
  • Keywords: Composite aerogels, rGO, Metal oxide nanoparticles, Electrochemical tests LiB, PERFORMANCE, NANOCOMPOSITE, STORAGE, ANODE
  • Hacettepe University Affiliated: Yes

Abstract

Reduced graphene oxide (rGO) has considerable potential in a variety of applications, including catalysis, energy storage, and conversion. In this work, Fe3O4/rGO and CoFe2O4/rGO composite aerogels which have the significant synergistic effects that extensively improve the properties of aerogels. The rGO and composite aerogels display a sponge like structure interconnected with macro-pores and extremely wrinkled surfaces of the cell wall. In addition, composite aerogels as anode materials for lithium-ion batteries show better electrochemical performance than pure rGO aerogel. On the initial cycle, capacities of 1189 mAhg(- 1) is delivered by the Fe3O4/rGO aerogel on delithiation, corresponding to a Coulombic efficiency of 77.0%. It is found that the capacity value is 310 mAhg(- 1), after 100 cycles. 1048 mAhg(- 1) of capacity is obtained for CoFe2O4/rGO aerogel in the first cycle, which provides an initial Coulombic efficiency of 57.0%.