Synthesis of ZnO/Polypyrrole Nanoring Composite as High-Performance Anode Materials for Lithium Ion Batteries

Abstract

ZnO has attracted considerable attention as electrode material in lithium-ion battery (LIB) due to its theoretically high capacity. However, poor electronic conductivity and huge volumetric changes during cycling limit its industrial applications. In this work, polypyrrole nanorings (PNRs) were successfully prepared via the solution chemistry method using pyrrole (Py) as raw material, ammonium persulfate (APS) as oxidant, and cetyltrimethyl ammonium bromide (CTAB) as surfactant. The ZnO/PNR composite was synthesized with zinc oxide nanoparticles absorbed on the surface of PPy nanorings through the one-pot in situ sol-gel method. The composite shows a three-dimensional intertwined network structure where the size of polypyrrole nanorings ranges from 80 nm to 100 nm in diameter and the average size of uniformly distributed ZnO nanocrystals is 10.49 nm. The unique three-dimensional conductive framework can provide good electronic contact between the ZnO particles and buffer the volume variation during the lithiation/delithiation processes. As an electrode material for LIBs, the ZnO/PNR composite delivers a first cycle discharge capacity of 1658 mAh g-1 and a capacity retention of 50.7% over 150 cycles at 200 mA g-1, indicating high specific capacity and outstanding cycle stability.

Recent developments in conducting polymers: applications for electrochemistry

“…The ZnO/PNR composite, as one of the electrode materials for LIBs, provides 1658 mA h g À1 rst-cycle discharge capacity and 50.7% capacity retention over 150 cycles at 200 mA g À1 , which reects greater specic capacity and the signicant stability of the cycle. 117 4.2.4. Fuel cells.…”

Bifunctional polypyrrole-based conductive paper towards simultaneous efficient solar-driven water evaporation and electrochemical energy storage

“…The peak at the binding energy of 284.7 eV was derived from the C–H/C–C bonds in the chemical structure of PPy. 31 Peaks at the binding energies of 285.7 eV 32 and 287.5 eV 25 matched with the C–N and CN bonds in the pyrrole ring, respectively. It is worth noting that the N1s region in the XPS spectrum presented three peaks with significant intensity differences, as shown in Fig.…”

Review—Conducting Polymer-Based Binders for Lithium-Ion Batteries and Beyond

“…CPs could be derived from pyrrole, 65,98 aniline, 97,90,99 thiophene, 117 or EDOT 118,96 by polymerizing CP monomers with chemical oxidants, such as ammonium persulfate 65,118,96 or iron (III) chloride. 98 Meanwhile, active materials can either be anode 98,97,99,118,96,119,120 or cathode 65,90 materials as long as they are chemically stable during polymerization. The CP network serves as a multifunctional, conductive binder matrix that tightly links active materials together.…”