MnO2/poly(3,4-ethylenedioxythiophene) coaxial nanowires by one-step coelectrodeposition for electrochemical energy storage.
By Ran Liu, S. B. Lee. Journal of the American Chemical Society, 2008
621 citations recorded by the source corpus.
We introduce a simple one-step method to synthesize MnO2/poly(3,4-ethylenedioxythiophene) (PEDOT) coaxial nanowires by coelectrodeposition in a porous alumina template. Constant potential (typically 0.75 V vs Ag/AgCl) is applied on the bottom electrodes in the pores of the alumina template in aqueous solution containing manganese acetate (10 mM) and EDOT monomers (80 mM). We can easily control the structures of coaxial nanowires such as PEDOT shell thickness and nanowire length by varying the applied potential. Electrochemical properties of the coaxial nanowires were investigated for an electrochemical supercapacitor. Coaxial nanowires not only exhibit high specific capacitance values but also maintain them well at high current density. The well-maintained specific capacitance is mainly due to short paths of ion diffusion in the nanowires. Therefore, even at high current density (high power demand), the nanowire materials can be fully utilized. The porous nature of the PEDOT shell allows such fast ion dif...
Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/92b96ee76daf09802a4cd03015c456f24f0b0a1a
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Citations in the corpus
- Conducting polymer‐based flexible supercapacitor (2015, background): “For effective and promising supercapacitor applications, a range of MnO2based binary phase hybrids are demonstrated with CPs [195, 197].”