Abstract
Conductive Poly (3,4-ethylenedioxythiophene) (PEDOT) nanofibers are uniformly deposited on ultrathin graphene oxide (GO) nanosheets via a simple and effective in situ polymerization process under ambient conditions. The as-prepared samples are characterized by field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Raman spectra, Fourier transforms infrared spectra (FTIR), and electrochemical measurements. The results indicate that the as-obtained PEDOT–GO hybrid (GDOT) achieves excellent sodium storage properties. When explored as a new inorganic/polymeric electrode for sodium ion batteries (SIBs), the GDOT exhibits a high reversible capacity (338 mAh g−1), good cycling stability (234 mAh g−1 after 400 cycles), and excellent rate capabilities (e.g., 62 mAh g−1 at 30 A g−1) due to their ultrathin structure as well as conductive network. This easily scale-up-able and effective strategy shows great potential for large-scale energy applications.
Highlights
Lithium ion batteries (LIBs) have been the leading energy storage technology for portable devices and electrical vehicles (EVs) during the past two decades
The resulting PEDOT–graphene oxide (GO) hybrid (GDOT) architecture possesses the following merits: (1) ultrathin configuration endowing short ion diffusion path; (2) much improved electrical conductivity facilitating fast charge transfer; (3) high specific surface areas providing sufficient active sites; and most importantly (4) scale-up-able methodology under ambient conditions. Benefiting from these unique characteristics, the as-synthesized GDOT electrodes present a high reversible capacity of 338 mAh g−1 at 100 mA g−1, preferable rate (e.g., 136 mAh g−1 at 10 A g−1 ) and cycling performance (234 mAh g−1 after 400 cycles at 100 mA g−1 ) when working as the anode for Sodium ion batteries (SIBs)
The results suggest another point of view that the PEDOT
Summary
Lithium ion batteries (LIBs) have been the leading energy storage technology for portable devices and electrical vehicles (EVs) during the past two decades. The resulting PEDOT–GO hybrid (GDOT) architecture possesses the following merits: (1) ultrathin configuration endowing short ion diffusion path; (2) much improved electrical conductivity facilitating fast charge transfer; (3) high specific surface areas providing sufficient active sites; and most importantly (4) scale-up-able methodology under ambient conditions. Benefiting from these unique characteristics, the as-synthesized GDOT electrodes present a high reversible capacity of 338 mAh g−1 at 100 mA g−1 , preferable rate (e.g., 136 mAh g−1 at 10 A g−1 ) and cycling performance (234 mAh g−1 after 400 cycles at 100 mA g−1 ) when working as the anode for SIBs
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