Dallas Finds Seoul Brothers in Battery Development

Dean Sigler Batteries, Sustainable Aviation Leave a Comment

A “novel” manganese and sodium-ion-based material might be a contender for the more universal lithium-ion batteries that power our mobile devices and make us mobile in electric vehicles.  Developed by the University of Texas at Dallas in collaboration with Seoul National University, the new material is said to offer “a potentially lower-cost, more ecofriendly option to fuel next-generation devices and electric cars.” Dr. Kyeongjae Cho, professor of materials science and engineering in the Erik Jonsson School of Engineering and Computer Science, thinks battery cost is a “substantial issue.”  It may become more of one with electric vehicle production growing from the existing global electric car stock of two million vehicles in 2016 to a projected nine-to-20 million (as reported by the International Energy Agency) by 2020 and between 40 and 70 million by 2025.  This rapid growth will put an added burden on finding and extracting lithium, since the mineral exists in relatively small amounts in sometimes isolated places. Correction added …

Deformable Flexible and Conductive – A Great Solid Electrolyte

Dean Sigler Batteries, Electric Aircraft Materials, Electric Powerplants, Sustainable Aviation Leave a Comment

Reporting on a new material that doesn’t seem real, a joint research team from Ulsan National Institute of Science and Technology (UNIST) and Seoul National University in Korea says it has developed a “highly-conductive, highly deformable, and dry-air-stable glass electrolyte for solid-state lithium-ion batteries.  If those characteristics seem mutually exclusive, the electrical performance helps dispel skepticism. Assisted by colleagues at Lawrence Berkeley National Lab and Brookhaven National Lab, the researchers prepared the electrolyte using a “homogenous methanol solution,” and wetting exposed surfaces of the electrode active materials with the solidified electrolyte. Eureka Alert! quotes Professor Yoon Seok Jung  (UNIST, School of Energy and Chemical Engineering) , “The research team also developed a material for the solid electrolyte by adding the iodized lithium (LiI) to the methanol liquid which is the compound (Li4SnS4) based on tin (Sn). The compound’s ionic conductivity was originally low, but it got increased by getting mixed with LiI. Consequently, by combining two materials together, it became possible to …