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The secret of catalysts that increase fuel cell efficiency


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IMAGE: Schematic diagram of the process of material phase transition, ex-solution particle formation, and the change in catalytic activity depending on the reduction environment.
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Credit: POSTECH
Fuel cells, which are attracting attention as an eco-friendly energy source, obtain electricity and heat simultaneously through the reverse reaction of water electrolysis. Therefore, the catalyst that enhances the reaction efficiency is directly connected to the performance of the fuel cell. To this, a POSTECH-UNIST joint research team has taken a step closer to developing high-performance catalysts by uncovering the ex-solution and phase transition phenomena at the atomic level for the first time. ....

South Korea , Kyeounghak Kim , Guntae Kim , Energy Environmental Science , Department Of Chemical Engineering , Korea Institute Of Energy Technology Evaluation , Samsung Research Funding Incubation Center , Professor Jeong Woo Han , Chemical Engineering , Professor Guntae Kim , Environmental Science , Samsung Research Funding , Incubation Center , Korea Institute , Energy Technology Evaluation , Chemistry Physics Materials Sciences , Biomechanics Biophysics , Energy Fuel Non Petroleum , Polymer Chemistry , Electrical Engineering Electronics , Research Development , Nanotechnology Micromachines , Molecular Physics , தெற்கு கொரியா , ஆற்றல் சுற்றுச்சூழல் அறிவியல் , துறை ஆஃப் இரசாயன பொறியியல் ,

UNIST team develops new electrolyte additive for high-energy-density Li-ion batteries


UNIST team develops new electrolyte additive for high-energy-density Li-ion batteries
Researchers at the Ulsan National Institute of Science and Technology (UNIST) in Korea have developed an innovative electrolyte additive that enables a high-energy-density Li-ion battery to retain more than 80% of its initial capacity even after hundreds of cycles.
When this additive was added to a large-capacity battery composed of a high-nickel anode and a silicon mixed anode, the initial capacity was maintained at 81.5% even after 400 charging and discharging cycles 10% to 30% better than commercial additives such as FEC (fluoroethylene carbonate) or VC (vinylene carbonate).
An open-access paper on their work is published in ....

South Korea , Korea Research Foundation , Nature Communications , Korea Institute Of Energy Technology Evaluation , Ulsan National Institute Of Science , Ulsan National Institute , Nam Soon Choi , Korea Institute , Energy Technology Evaluation , தெற்கு கொரியா , கொரியா ஆராய்ச்சி அடித்தளம் , இயற்கை தகவல்தொடர்புகள் , கொரியா நிறுவனம் ஆஃப் ஆற்றல் தொழில்நுட்பம் மதிப்பீடு , உல்சன் தேசிய நிறுவனம் ஆஃப் அறிவியல் , உல்சன் தேசிய நிறுவனம் , நாம் விரைவில் சோய் , கொரியா நிறுவனம் , ஆற்றல் தொழில்நுட்பம் மதிப்பீடு ,