Loading...

Synthesis and Characterization of CuO Microflowers/Ppy Nanowires NCs as Anode Materials for Lithium-ion Battery

Helli, Motahareh | 2021

238 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 54734 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Sadrnezhad, Khatiboleslam
  7. Abstract:
  8. Novel Copper Oxide microflowers /Polypyrroles nanowire nanocomposites with various wight ratio have been synthesized.The synthesized CuO/Ppy NCs and Cuo microflowers are characterized by XRD, FT-IR, TGA, FESEM and EDX line analysis/elemntal mapping. The formation mechanism of CuO microflower and Ppy nanowires are also well explained.All syntesized samples have been used as as anode material for li-ion batteries in order to measure their electochemical lithium-ion storage properties. It is demonstrated that presence of Ppy nanowire with different weight ratio plays important role in lithium-storage properties of the hybrid CuO/Ppy NCs. With increase in the mass ratio of Ppy nanowire cyclic durability and discharge and charge capacity of Ppy/CuO NCs are enhanced.The NCs consist of 3.5% , 5%, 6.2% and 8.8% Ppy nanowire exhibit reversible capacity of 130 , 240, 375 and 213 mAh/g respectivly. The improved performance of hybrid CuO/Ppy NCs is attribute to presence of Ppy nanowires. The CuO/Ppy NCs benefit from nanowire morphology and composite structural features that accomodate CuO dramatic volume expanion and enhance electrical conductivity during discharge/charge steps.This study shows that tuning Ppy nanowire mass ratio in Metal Oxide/ Polymer electrodes can be simple and effective way to enhance electrode performance of hybrid NCs used in energy storage fields
  9. Keywords:
  10. Metal Oxides ; Conductive Polymer ; Composite Materials ; Lithium Ion Batteries ; Microwave Assisted Synthesis ; Polypyrrole

 Digital Object List

 Bookmark

No TOC