Researchers have found an explanation for why a certain class of quantum dots shines with such incredibly bright colors.

The nanocrystals in question contain caesium lead halide compounds arranged in a perovskite lattice structure. Three years ago, Maksym Kovalenko, a professor at ETH Zurich and the Swiss Federal Laboratories for Materials Science and Technology (Empa), succeeded in creating nanocrystals from the same semiconductor material.

“These tiny crystals have proved to be extremely bright and fast emitting light sources, brighter and faster than any other type of quantum dot studied so far,” says Kovalenko.

By varying the composition of the chemical elements and the size of the nanoparticles, Kovalenko also  produced a variety of nanocrystals that light up with the colors of the entire visible spectrum. These quantum dots could be used as components for future light-emitting diodes (LEDs) and displays.

(more…)

One year ago, the Chinese government’s energy agency made a long-term commitment to the development of renewable energy sources, investing more than $360 billion in an effort to shift away from coal-powered energy. Now, the country is following through on those promises, paving the way to becoming the global leader in the overall development of clean energy technology.

According to a new report from the Institute of Energy Economics and Financial Analysis (IEEFA), China has continued to grow its clean energy sector in 2017, installing over 50 GW of solar-powered generation.

“The clean energy market is growing at a rapid pace and China is setting itself up as a global technology leader while the U.S. government looks the other way,” said Tim Buckley, co-author of the report. “Although China isn’t necessarily intending to fill the climate leadership void left by the U.S. withdrawal from Paris, it will certainly be very comfortable providing technology leadership and financial capacity so as to dominate fast-growing sectors such as solar energy, electric vehicles, and batteries.”

(more…)

On January 1, 2018, ECS eliminated all charges for color figures published in the Journal of The Electrochemical Society (JES) and the ECS Journal of Solid State Science and Technology (JSS).

Figures may now be represented in color at no cost to authors in print-on-demand issues of JES and JSS.

Please note: ECS no longer offers print subscriptions to volumes of JES or JSS. Print editions of individual issues within each volume are only available as print-on-demand copies.

To have your figures represented in color in a print-on-demand issue, you must indicate that you wish to have color figures in the issue on the financial information page of your submission form.

If you do not select this option, your color figures will be converted to black and white or grayscale in the print-on-demand issue.

ECS’s decision to eliminate color charges aligns closely with the Society’s continual efforts to Free the Science, removing the barriers impeding authors from publishing their research in the formats they believe to be the most accessible and impactful. Submit today!

ECS has a wide array of programs to put your organization’s brand in front of leaders within the electrochemistry and solid state science technology communities.

Through our marketing platforms ECS can connect your organization with your target audience and help to grow your business. Below are the platforms that your company can get involved with through ECS.

Exhibit opportunities
Showcase your products and services at the exhibitions during our biannual meetings. Watch our “Why Exhibit with ECS” video to learn more about our exhibitors.

Meeting sponsorship opportunities
ECS has sponsorship options to highlight your brand at ECS meetings. These include general meeting sponsorship, custom events, and symposium sponsorship. Below you will find the links to our brochures that lists all of our options.

(more…)

The following article was originally published in the winter 2017 issue of Interface.

By: Alice Suroviec, Berry College

Corrosion Technology Laboratory
The Corrosion Technology Laboratory at the NASA Kennedy Space Center is a network of capabilities—people, equipment, and facilities—that provide technical innovations and engineering services in all areas of corrosion for NASA and external customers.

The Corrosion Technology Laboratory is part of the Applied Technology Division of NASA, and any project involving corrosion may utilize this fully staffed and equipped corrosion laboratory as a resource. This site provides fundamentals of corrosion and corrosion control information as well as resources for further information. Learn more.

(more…)

Water-based rechargeable batteries could be one step closer to commercial viability, thanks to research from Empa. According to a new report, a team of researchers has successfully doubled the electrochemical stability of water with a special saline solution.

Energy storage is the backbone of many technological innovations. As researchers explore new ways to develop low-cost, safe batteries, the research team from Empa is looking to water to function as a battery electrolyte.

While a water-electrolyte offers many potential benefits such as low cost and high availability, it does have at least one major drawback: low chemical stability. At a voltage of 1.23 volts, a water cell supplies three times less voltage than a typical lithium-ion cell. While water-based batteries may not see an application in such technologies as electric vehicles, the team of researchers at Empa believe they could be utilized for stationary electricity storage applications.

(more…)

Each year ECS provides for and facilitates the use of thousands of dollars to support students and early career researchers in efforts to advance electrochemistry and solid state science.

Several fellowship and grant applications are due over the next few weeks:

Deadline: January 15
Summer Fellowships – up to four $5,000 fellowships are available. Complete the PDF application available and submit it in the ECS awards portal under Student Awards for ECS Summer Fellowships.

Colin Garfield Fink Summer Fellowship – one $5,000 fellowship available. Complete the PDF application available and submit it in the ECS awards portal under Society Awards for the Colin Garfield Fink Summer Fellowship.

(more…)

The following article was originally published in the winter 2017 issue of Interface.

By: Johna Leddy, ECS President

“It is all about power. If you have power, you have water. If you have water, you have food. If you have food, you can go to school. If you go to school, you have tools to think. If you have access and tools to think, you can learn those next door are not so different. You can work together to mitigate energy disparates and so reduce conflict. It is all about power.”

-ECS satellite OpenCon, October 2017

ECS looks to its future as a forum for research and a conduit for access and communication. Tenets of the scientific method are invariant, but practice of communication and access change. Change is driven by gradients. Without gradients, energy is minimized and the system dies, but if gradients are too steep, the system becomes unstable. History maps conflicts over energy and power. Early wars were over land for food energy. Distribution of natural resources and oil sustain conflicts for thermal energy. Gradients in energy distribution drive change and conflict. Going forward, access to critical materials and information, coupled with the skills and imagination to develop advanced technologies, will mitigate steep gradients in energy distribution.

(more…)

Nitrogen-doped carbon nanotubes or modified graphene nanoribbons could be effective, less costly replacements for expensive platinum in fuel cells, according to a new study.

In fuel cells, platinum is used for fast oxygen reduction, the key reaction that transforms chemical energy into electricity.

The findings come from computer simulations scientists created to see how carbon nanomaterials could be improved for fuel-cell cathodes. Their study reveals the atom-level mechanisms by which doped nanomaterials catalyze oxygen reduction reactions (ORR).

Doping with nitrogen

Boris Yakobson, a professor of materials science and nanoengineering and of chemistry at Rice University, and his colleagues are among many researchers looking for a way to speed up ORR for fuel cells, which were discovered in the 19th century but not widely used until the latter part of the 20th. Fuel cells have since powered transportation modes ranging from cars and buses to spacecraft.

(more…)

Many areas of the United States are at risk for nitrate and nitrite contamination of drinking water due to overuse of agricultural fertilizers. Click to enlarge.
Image: USGS

Researchers have found a catalyst that can clean toxic nitrates from drinking water by converting them into air and water.

“Nitrates come mainly from agricultural runoff, which affects farming communities all over the world,” says lead study scientist Michael Wong, a chemical engineer at Rice University.

“Nitrates are both an environmental problem and health problem because they’re toxic. There are ion-exchange filters that can remove them from water, but these need to be flushed every few months to reuse them, and when that happens, the flushed water just returns a concentrated dose of nitrates right back into the water supply,” he explains.

Wong’s lab specializes in developing nanoparticle-based catalysts, submicroscopic bits of metal that speed up chemical reactions. In 2013, his group showed that tiny gold spheres dotted with specks of palladium could break apart nitrites, the more toxic chemical cousins of nitrates.

(more…)