The effect of electronic wiring on the electrochemical reaction sites in manganese oxide (MnO2) was studied by electrochemical impedance spectroscopic (EIS) investigation of MnO2/multiwall carbon nanotube (MWCNT) composites with and without added conducting agents. The results helped in confirming the effects of the electrical conductivity of the composite on its electrochemical properties. The electronic wiring in MnO2 influences not only the electron transfer reactions at the surface electrochemical reaction sites but also Na+ ion diffusion in the bulk electrochemical reaction sites. Electronic wiring plays a more important role in deciding the rate capability of MnO2 than does the electrical conductivity of the electrode.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Surfaces, Coatings and Films
- Materials Chemistry