Scientists in Saudi Arabia have used a kitchen sponge as an electrode platform for supercapacitor devices. The MnO2–carbon nanotube–sponge supercapacitor electrode demonstrates reasonably good electrochemical performance in both aqueous and organic electrolytes, they say.
Compared to aqueous electrolytes, the energy density of supercapacitors in 1M Et4NBF4 tripled and the value was improved six-fold when using 1M LiClO4 as the electrolyte. The team behind the research also said that the cycling performance in organic electrolytes was inferior to aqueous electrolytes, but the devices in organic electrolytes retained a significant energy density advantage even after 10,000 cycles. (Read the article for free until the 5th July)