Skip to main content
placeholder image

Mesoporous hexagonal Co3O4 for high performance lithium ion batteries

Journal Article


Download full-text (Open Access)

Abstract


  • Mesoporous Co3O4 nanoplates were successfully prepared by the conversion of hexagonal beta-Co(OH)(2) nanoplates. TEM, HRTEM and N-2 sorption analysis confirmed the facet crystal structure and inner mesoporous architecture. When applied as anode materials for lithium storage in lithium ion batteries, mesoporous Co3O4 nanocrystals delivered a high specific capacity. At 10 degrees C current rate, as-prepared mesoporous Co3O4 nanoplates delivered a specific capacity of 1203 mAh/g at first cycle and after 200 cycles it can still maintain a satisfied value (330 mAh/g). Fromex-situ TEM, SAED and FESEM observation, it was found that mesoporous Co3O4 nanoplates were reduced to Li2O and Co during the discharge process and re-oxidised without losing the mesoporous structure during charge process. Even after 100 cycles, mesoporous Co3O4 crystals still preserved their pristine hexagonal shape and mesoporous nanostructure.

Authors


  •   Su, Dawei (external author)
  •   Xie, Xiuqiang (external author)
  •   Munroe, Paul R. (external author)
  •   Dou, Shi Xue
  •   Wang, Guoxiu

Publication Date


  • 2014

Citation


  • Su, D., Xie, X., Munroe, P., Dou, S. & Wang, G. (2014). Mesoporous hexagonal Co3O4 for high performance lithium ion batteries. Scientific Reports, 4 1-8.

Scopus Eid


  • 2-s2.0-84923336493

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2261&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1260

Number Of Pages


  • 7

Start Page


  • 1

End Page


  • 8

Volume


  • 4

Abstract


  • Mesoporous Co3O4 nanoplates were successfully prepared by the conversion of hexagonal beta-Co(OH)(2) nanoplates. TEM, HRTEM and N-2 sorption analysis confirmed the facet crystal structure and inner mesoporous architecture. When applied as anode materials for lithium storage in lithium ion batteries, mesoporous Co3O4 nanocrystals delivered a high specific capacity. At 10 degrees C current rate, as-prepared mesoporous Co3O4 nanoplates delivered a specific capacity of 1203 mAh/g at first cycle and after 200 cycles it can still maintain a satisfied value (330 mAh/g). Fromex-situ TEM, SAED and FESEM observation, it was found that mesoporous Co3O4 nanoplates were reduced to Li2O and Co during the discharge process and re-oxidised without losing the mesoporous structure during charge process. Even after 100 cycles, mesoporous Co3O4 crystals still preserved their pristine hexagonal shape and mesoporous nanostructure.

Authors


  •   Su, Dawei (external author)
  •   Xie, Xiuqiang (external author)
  •   Munroe, Paul R. (external author)
  •   Dou, Shi Xue
  •   Wang, Guoxiu

Publication Date


  • 2014

Citation


  • Su, D., Xie, X., Munroe, P., Dou, S. & Wang, G. (2014). Mesoporous hexagonal Co3O4 for high performance lithium ion batteries. Scientific Reports, 4 1-8.

Scopus Eid


  • 2-s2.0-84923336493

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2261&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1260

Number Of Pages


  • 7

Start Page


  • 1

End Page


  • 8

Volume


  • 4