gel batteries Now THAT'S using your loaf! Mouldy bread could help to make better batteries

Somewhere in the kitchen hidden at the bottom of the bread box may be the key to making better rechargeable batteries.
The researchers found that a fungus can produce materials for generating electricity, which can turn moldy bread into a familiar green pale.
They described the bread mold, known as crassa, being able to convert metal manganese into the material needed for the battery, paving the way for more sustainable production.
About 90 years ago, moldy bread was at the heart of one of the most important medical discoveries of the last century, alexander Fleming found that the fungus growing on the bread produced a chemistry with the properties of killing bacteria that led to penicillin.
But a team at Dundee has been developing bread molds to convert materials, and previous studies have shown that fungi can be used to convert toxic lead and uranium into more stable materials.
In their latest study, the researchers converted manganese into an ideal mineral for lithium
Ion batteries and capacitors that store charges in chemical form.
"We have made chemical active materials with fungal manganese organisms.
Jeffrey Gard, a professor at Dundee University who led the study, said.
The Gadd team is in N.
A natural waste-manganese chloride and urea-found filaments grown by fungi covered with minerals.
Heating the mineralised fungi leaves manganese oxide and burnt carbon biomass, and they find that these substances have the ideal electro-chemical properties required for batteries and trap electrodes.
The electrochemical properties of carbon fungus biomass
Mineral composites were tested in super capacitors and lithium
"It was found that the ion battery and its [composite] have excellent electro-chemical properties," Professor Gadd explained . ".
Other efforts to improve lithium performance
The research focus of ion batteries and super capacitors is the use of alternative materials such as carbon nanotubes and other manganese oxides.
But Dundee's researchers believe they have found a more sustainable way to produce electrodes using these fungi.
Therefore, the system provides a new biotechnology method for the preparation of sustainable electro-chemical materials.
"We were surprised by the prepared biomass --
Gadd says the properties of Mn oxide composites are very good.
The analysis shows that compared with other manganese oxides in lithium,
Carbon fungus biomass-ion battery
The team said that the mineral composites and "showed excellent cycle stability and retained more than 90% of the capacity after 200 cycles ".
According to Gadd, the group will continue to explore fungi as a source for the production of other useful metal carbonates.
In addition to this, they think this method can be used as a way to recover rare elements locked in other compounds.
The findings are published in the journal Contemporary Biology.
Moldy bread is not the only source of waste that helps keep the lights on.
Earlier this week, a team in the United States released details of their work on developing microbial gel batteries that utilize tomato waste.
Microbial electrochemical cells use bacteria to decompose and oxidized organic substances in tomatoes.
When bacteria interact with tomato waste, the resulting oxidation releases electrons that flow and become a source of electricity.
The team believes that using Florida's waste alone can generate enough electricity to power the Disney World for three months.