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A new method for successfully measuring electrical conductivity in microorganisms―approaching understanding of microbial ecosystems

A new bioelectronic system has been developed to measure electrical conductivity in microorganisms without requiring biofilm formation on electrodes. This approach has revealed that Pseudomonas aeruginosa and Bacillus subtilis possess conductive properties, with potential applications in environmental energy technologies.

SourceUniversity of Tsukuba·JournalEnvironmental Science & Technology·DateFeb 29, 2024

Dirt-powered fuel cell runs forever

A new Northwestern University-led fuel cell harvests energy from microbes in soil to power underground sensors, potentially offering a sustainable alternative to batteries. The technology outlasts similar technologies by 120% and can operate in both wet and dry conditions.

SourceNorthwestern University·JournalProceedings of the ACM on Interactive Mobile Wearable and Ubiquitous Technologies·TypeExperimental study·DateJan 16, 2024

Template for success: Shaping hard carbon electrodes for next-generation batteries

Researchers at Tokyo University of Science developed nanostructured hard carbon electrodes using inorganic zinc-based compounds, which deliver unprecedented performance and significantly increase the capacity of sodium- and potassium-ion batteries. The new electrodes improve energy density by 1.6 times compared to existing technologies.

SourceTokyo University of Science·JournalAdvanced Energy Materials·TypeExperimental study·DateNov 13, 2023

Efficient biohybrid batteries

Researchers developed a fast-charging hybrid battery system that combines electrochemical generation of formic acid with a microbial fuel cell, enabling efficient energy storage. The system produced enough current for 25 hours of discharge and demonstrated potential applications in monitoring water toxicity.

SourceWiley·JournalAngewandte Chemie International Edition·TypeExperimental study·DateOct 31, 2023

Turning vegetable oil industry waste into power: innovative electrode modification improves bio-electrochemical treatment of wastewater

Researchers have developed a novel and cost-effective anode catalyst that can improve and stabilize power generation performance of MFCs treating vegetable oil industry wastewater. The study investigates modification of electrodes to increase bacterial adhesion and efficient electron transfer.

SourceSociety of Chemical Industry·JournalJournal of Chemical Technology and Biotechnology·DateMar 13, 2023

Korea Maritime and Ocean University researchers lay out strategies for up-scaling of bioelectrochemical systems

Researchers have identified the need for standardization of performance indices and a single frame for normalization methods to address concerns with bioelectrochemical systems. The study proposes strategies for up-scaling BES technologies, enabling resource recovery through on-site treatment of wastewater at an efficiency comparable t...

SourceNational Korea Maritime and Ocean University·JournalBioresource Technology·TypeLiterature review·DateJan 19, 2023

Hundreds-fold electrochemical measurement output brings data science to reveal microbial electricity generation mechanisms

Researchers developed a device capable of taking hundreds of times more electrochemical measurements than conventional devices, enabling the analysis of molecular mechanisms that enable microorganisms to efficiently generate electricity. The technique can also be used to analyze materials interacting with microorganisms.

Novel multi-proton carrier complex as efficient proton conductor at high temperatures

A team of researchers from Tokyo University of Science has developed a novel multi-proton carrier complex that shows efficient proton conductivity even at high temperatures. The resulting starburst-type metal complex acts as a proton transmitter, making it 6 times more potent than individual imidazole molecules.

SourceTokyo University of Science·JournalChemistry - A European Journal·TypeExperimental study·DateJul 18, 2022

New battery is activated by your spit

Researchers at Binghamton University developed a paper-based bacteria-powered battery activated by spit, which can generate reliable power from one drop of saliva. The battery has competitive advantages over conventional solutions due to the availability of biological fluid and long-term storage capabilities.

SourceBinghamton University·JournalAdvanced Materials Technologies·DateAug 8, 2017

Conducting shell for bacteria

Scientists have successfully coated live bacteria with a conducting polymer to improve their conductivity, resulting in a 23 times smaller resistance and a fivefold increase in electricity generation. This coating scheme has the potential to revolutionize microbial fuel cell technology and wastewater treatment.

SourceWiley·JournalAngewandte Chemie International Edition·DateJun 27, 2017

Tiny power generator runs on spit

Researchers have developed a saliva-powered, micro-sized microbial fuel cell that produces nearly 1 microwatt of power. The device uses graphene and bacteria from the natural environment to create energy, paving the way for portable biomedical devices with built-in power sources.

SourcePenn State·JournalNPG Asia Materials·DateApr 3, 2014

Superbugs from space offer new source of power

Researchers at Newcastle University have engineered a microbial biofilm that significantly increases the electrical output of Microbial Fuel Cells. By selecting specific bacteria species, including Bacillus stratosphericus and Bacillus altitudinis, they doubled the electricity generation to 200 Watts per cubic meter.

SourceNewcastle University·JournalJournal of Environmental Science and Technology·DateFeb 21, 2012

Microbial fuel cells turn on the juice

Researchers at Washington University in St. Louis are developing microbial fuel cell kits and educational materials to teach high school students about science and engineering. The technology can efficiently convert dilute organic waste streams into electricity, making it a promising alternative for waste-to-energy conversion.

Two bacteria better than one in cellulose-fed fuel cell

A team of Penn State researchers successfully created a microbial fuel cell that consumes cellulose and produces electricity by pairing two types of bacteria. The fuel cell achieves a maximum power density of 150 milliwatts per square meter, which is lower than current designs but shows promise for future improvements.

SourcePenn State·JournalEnvironmental Science & Technology·DateJul 27, 2007

Marine sediment microbial fuel cells get a nutritional boost

Researchers at Penn State developed a novel approach to extend the life of marine microbial fuel cells by providing bacteria with chitin, found in crustacean shells. The addition increased power production and allowed for longer-term remote operation, making it suitable for ocean sediments.

SourcePenn State·JournalEnvironmental Science & Technology·DateJun 4, 2007

Corn waste potentially more than ethanol

A Penn State researcher has developed a process that converts organic matter in corn waste into electricity, with a conversion rate of over 93 percent. This technology could provide a new, sustainable source of energy, reducing reliance on ethanol and other fossil fuels.

SourcePenn State·JournalEnergy & Fuels·DateJul 19, 2006