Aqueous Manganese Dioxide Ink for Flexible Energy Storage Devices

MnO₂ has always been regarded as an ideal material for the electrodes of energy storage devices. The PolyU research team has developed a novel approach to synthesize aqueous MnO₂ ink to coat various substrates, e.g. conductive paper, plastic and glass, for the production of light, thin, transparent and flexible energy storage devices. The MnO₂ ink coating on the substrates can be easily erased if required, facilitating the fabrication of electronic devices.

The capacity of the MnO₂ ink capacitor is over 30 times higher than that of a commercial capacitor made of active materials of the same weight (e.g. carbon powder), demonstrating the great potential of MnO₂ ink in significantly enhancing the performance of energy storage devices.