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Synthesis and characterization of silver/lithium cobalt oxide (Ag/LiCoO2) nanofibers via sol–gel electrospinning
| Content Provider | Semantic Scholar |
|---|---|
| Author | Aykut, Yakup Pourdeyhimi, Behnam Khan, Saad A. |
| Copyright Year | 2013 |
| Abstract | Abstract We report on the preparation and characterization of Ag/LiCoO 2 nanofibers (NFs) via the sol–gel electrospinning (ES) technique. Ag nanoparticles (NPs) were produced in an aqueous polyvinyl pyrrolidone (PVP) solution by using AgNO 3 precursor. A viscous lithium acetate/cobalt acetate/polyvinylalcohol/water (LiAc/(CoAc) 2 /PVA/water) solution was prepared separately. A Ag NPs/PVP/water solution was prepared and added to this viscous solution and magnetically stirred to obtain the final homogeneous electrospinning solution. After establishing the proper electrospinning conditions, as-spun precursor Ag/LiAc/Co(Ac) 2 /PVA/PVP NFs were formed and calcined in air at a temperature of 600 °C for 3 h to form well-crystallized porous Ag/LiCoO 2 NFs. Various analytical characterization techniques such as UV–vis, SEM, TEM, TGA, XRD, and XPS were performed to analyze Ag NPs, as-spun and calcined NFs. It was established that Ag NPs in the precursor Ag/LiAc/Co(Ac) 2 /PVA/PVP NFs are highly self-aligned as a result of the behavior of Ag in the electric field of the electrospinning setup and the interaction of Ag ions with Li and Co ions in the NF. Ag/LiCoO 2 NFs exhibit a nanoporous structure compared with un-doped LiCoO 2 NFs because the atomic radius of Ag is larger than the radius of Co and Li ion; thus, no substitution between Ag and Li or Ag and Co atoms occurs, and Ag NPs are located at the interlayer of LiCoO 2 while some are left in the fiber. |
| Starting Page | 1538 |
| Ending Page | 1545 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.jpcs.2013.05.021 |
| Volume Number | 74 |
| Alternate Webpage(s) | https://www.cbe.ncsu.edu/khangroup/wp-content/uploads/sites/12/2017/02/aykut3.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.jpcs.2013.05.021 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
