Reduced graphene oxide composite aerogels for lithium-ion batteries

ÇAKMAK Ö.

JOURNAL OF POROUS MATERIALS, cilt.29, sa.6, ss.1771-1778, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 29 Sayı: 6
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1007/s10934-022-01293-3
  • Dergi Adı: JOURNAL OF POROUS MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.1771-1778
  • Anahtar Kelimeler: Composite aerogels, rGO, Metal oxide nanoparticles, Electrochemical tests LiB, PERFORMANCE, NANOCOMPOSITE, STORAGE, ANODE
  • Hacettepe Üniversitesi Adresli: Evet

Özet

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%.