Yue Kuo’s work in solid state science has yielded many innovations and has made a tremendous mark on the scientific community. Since his arrival at ECS in 1995, Kuo was named an ECS Fellow, was recently named Vice President of the Society, previously served as an associate editor of the Journal of The Electrochemical Society, and is currently one of the technical editors of the ECS Journal of Solid State Science and Technology. Additionally, Kuo received the ECS Gordon E. Moore Medal for Outstanding Achievement in Solid State Science and Technology at the 227th ECS Meeting.
Recent PhD recipient and past ECS student member, Rachel Zucker, examined one of the most complex issues in materials science and has developed a range of mathematical solutions to explain the phenomena known as “dewetting” in solid films. In defense of her thesis, Zucker modeled dewetting in microscale and nanoscale thin films.
Dewetting can be boiled down to the general break-up of material due to excess surface energy. Zucker’s development provides us with not only a new understanding of this phenomenon, but also a way to simulate it. When analyzing solid state dewetting, issues becomes very prominent as engineers attempt to make products with smaller and smaller features.
“The big takeaway is: One, we can write down formulation of this problem; two, we can implement a numerical method to construct the solutions; three, we can make a direct comparison to experiments; and that strikes me as what a thesis should be — the complete thing — formulation, solution, comparison, conclusion,” said W. Craig Carter, MIT professor and Zucker’s co-adviser.
ECS student member Fudong Han and former member Chunsheng Wang have developed a novel solid state battery comprised of just one material that can both move and store electricity.
This new battery could prove to be revolutionary in the area of solid state batteries due to its incorporation of electrodes and electrolytes into a single material.
“Our battery is 600 microns thick, about the size of a dime, whereas conventional solid state batteries are thin films — forty times thinner. This means that more energy can be stored in our battery,” said Han, the first author of the paper and a graduate student in Wang’s group.
This from the University of Maryland:
The new material consists of a mix of sulfur, germanium, phosphorus and lithium. This compound is used as the ion-moving electrolyte. At each end, the scientists added carbon to this electrolyte to form electrodes that push the ions back and forth through the electrolyte as the battery charges and discharges. Like a little bit more sugar added at each end of a cookie-cream mixture, the carbon merely helps draw the electricity from side to side through the material.
Submission Deadline: July 15, 2015
The research landscape of luminescent and optical materials is rapidly changing due to a need for such materials outside the lighting and display technologies. Novel materials are needed and are developed with luminescent and optical properties appropriately tuned for applications in solar cells, sensors, bio-imaging, light extraction, and related opto-electronics in addition to solid state lighting and display technologies.
Have you heard of mechanochemistry yet? Researchers from McGill University are making a name for themselves in this up-and-coming multidisciplinary field with their discovery of a new material unveiled through unconventional means.
Prof. Tomislav Friščić’s research group in McGill’s Department of Chemistry is now producing chemical reactions through milling, grinding, or shering solid state ingredients. In other words, the team is using brute force to elicit these reactions rather than the typical liquid agents.
The group states that their process is similar to that of a coffee grinder. The advantage to using force over liquids is that it avoids environmentally harmful bulk solvents that are typically used when producing chemical reactions.
These findings were published in the paper “In Situ X-ray diffraction monitoring of a mechanochemical reaction reveals a unique topology metal-organic framework”. It all began in late 2012, where researchers reported that they had been able to observe milling reaction in real time – seeing chemical transformations using highly penetrating X-rays.
A team from Japan’s Samsung R&D has worked in collaboration with researchers from the University of Rome to fabricate a novel all solid state Lithium-sulfur battery.
The battery’s capacity is around 1,600 mAhg⁻¹, which denotes an initial charge-discharge Coulombic efficiency approaching 99 percent.
Additionally, the battery possesses such beneficial properties as the smooth stripping-deposition of lithium. In contrast to other Li-S cells, the new battery’s activation energy of the charge transfer process is much smaller.
Check out what’s trending in electrochemical and solid state technology! Read some of the most exciting and innovative papers that have been recently published in ECS’s journals.
The articles highlighted below are Open Access! Follow the links to get the full-text version.
“Modeling Volume Change due to Intercalation into Porous Electrodes”
Published in the Journal of The Electrochemical Society
Lithium-ion batteries are electrochemical devices whose performance is influenced by transport processes, electrochemical phenomena, mechanical stresses, and structural deformations. Many mathematical models already describe the electrochemical performance of these devices. Some models go further and account for changes in porosity of the composite electrode. Read the rest.
Each year ECS awards up to five Summer Fellowships to assist students in continuing their graduate work during the summer months in a field of interest to the Society. Congratulations to the five Summer Fellowship recipients for 2014. The Society thanks the Summer Fellowship Committee for their work in reviewing the applications and selecting five excellent recipients. Applications for the 2015 Summer Fellowships are due January 15, 2015.
A new study out of the SLAC National Accelerator Laboratory shows the “pseudogap” phase – a mysterious phase of matter – hoards electrons that might otherwise conduct electricity with 100 percent efficiency.
Scientists state that this pseudogap phase competes with high-temperature superconductivity, which robs electrons that would otherwise pair up to carry current though a material.
The results of the study are a culmination of 20 years of research aimed to find out whether the pseudogap helps or hinders superconductivity.
The study shows that the pseudogap is one of the things that stands in the way of getting superconductors to work at higher temperatures for everyday uses – thus making electrical transmission, computing, and other areas less energy efficient.
New issues of ECS Transactions have now been published from the ABAF and IMLB meetings. These meetings are sponsored by The Electrochemical Society. Their dates, volumes, and meeting information is as follows:
15th International Conference on Advanced Batteries, Accumulators and Fuel Cells (ABAF 2014), Brno, Czech Republic, August 24-28, 2014
17th International Meeting on Lithium Batteries (IMLB 2014), Como, Italy, June 10-14, 2014
Issues are continuously updated and all full-text papers will be published here as soon as they are available.
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