Sweden, a world leader in clean energy solutions, is make new innovations in harnessing the energy of wave power.

In an effort to combat the detrimental effects of climate change, countries around the world are looking for the next big thing in energy. In Sweden, part of that answer may be in buoys drifting in the ocean.

For the first time, Wave Energy Converters the Sotenäs Wave Power Plant on the Swedish West Coast is generating electricity and transporting it to the Swedish grid through buoys.

This from Seabased:

The connection of the six meter diameter buoys to the corresponding linear generator Wave Energy Converters on the seabed represents the final step in bringing each unit on line, together making up a system establishing many World firsts, including the world’s first multiple unit wave power plant and the world’s first subsea generator switchgear.

Read the full article.

Currently, Sweden is one of the global leader in clean energy solutions. Since the country’s oil crisis in the 1970s, the country has transitioned from an energy infrastructure from 70 percent dependency on oil to just a 20 percent dependency.

“This is a very significant achievement,” said Mats Leijon, CEO of Seabased. “We are very happy to have come this far and I wish to thank Fortum and the Swedish Energy Agency for their confidence and support all throughout this, sometimes tough, journey.”

In order to meet increasing water demands and combat the devastating effects of climate change, the United Arab Emirates (UAE) is looking toward scientific innovation to help quench the Persian Gulf’s thirst.

Increasing water shortage in UAE

The first issue that leads to UAE water shortages is the essentially non-existent rainfall paired with the country’s high water consumption. The UAE’s capital of Abu Dhabi receives only 75mm of rainfall annually, with the country as a whole receiving less than 100mm of rainfall each year . Pair that with a water consumption that is the highest in the world, coming in at 82 percent above global average, and the situation starts to look serous.

But that’s not the only issue in the UAE’s water supply problems. Climate change is making this land even hotter and drier than ever before, with a study stating that the effects of climate change may make the Persian Gulf uninhabitable by 2071.

(MORE: See how ECS scientists are addressing water and sanitation issues around the world.)

For this reason, the UAE is turning toward German and Japanese researchers, offering a $5 million reward to researchers who could help solve this problem.

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The capture and recycling of carbon dioxide in the atmosphere may be the first stop toward a “methanol economy.”

For the first time, researchers have successfully proven that carbon dioxide captured from the environment can be transformed into methanol. This not only removes damaging carbon dioxide emissions, but also produces an exciting alternative fuel. For some, this is an inevitable step toward an economy where fuel and energy storage would be primarily based on methanol.

The study was led by the University of Southern California professors G. K. Surya Prakash and George A. Olah and was published in the Journal of the American Chemical Society.

“Direct CO₂ capture and conversion to methanol using molecular hydrogen in the same pot was never achieved before. We have now done it!” Prakash says.

Methanol is especially attractive because of its use as an alternative fuel in fuel cells and for hydrogen storage. Some believe that methanol is the future, with 70 million tons already being produced annually via the production of plastics.

This from Phys.org:

In the new study, the researchers developed a stable catalyst based on the metal ruthenium that does not decompose at high temperatures. The catalyst’s good stability allows it to be reused over and over again for the continuous production of methanol.

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With plunging oil prices, it is proving to be more difficult than ever to entice buyers into purchasing an electric vehicle. While the low oil prices may be good for consumers’ gas tanks, the transportation sector continues to account for 27 percent of the United States’ greenhouse gas emissions.

The question then arises of how electric car manufacturers can steer folks back toward electric vehicles and away from gas-guzzling cars?

(MORE: Read Interface: PV, EV, and Your Home)

Impact of falling oil prices

“It definitely makes the transition to sustainable energy more difficult,” said Elon Musk, Tesla CEO, at a business conference in Hong Kong about the impact of the free-falling oil prices.

Tesla rose to prominence in 2003 when oil prices soared, making electric vehicles all the more tempting. With oil prices continually on the decline, it’s now up to companies like Tesla to compel buyers and stress the importance of transitioning toward cleaner vehicles.

New features for electric cars

For companies like Tesla, that means developing things like autonomous cars with “summon” features – allowing the user to call their car just like a pet. Even aesthetic aspects have become more important, with Tesla focusing on futuristic designs.

“What we’re aspiring to do is to make the cars so compelling that even with lower gas prices, it’s still the car you want to buy,” Musk said.

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While society as a whole is moving toward cleaner, more renewable energy sources, there is one key component that is typically glossed over in the energy technology conversation: energy storage.

Developments in solar and wind are critical in the battle against climate change, but without advances in energy storage, our efforts may fall short. What happens when the sun isn’t shining or the wind isn’t blowing?

The folks at Popular Science are providing a friendly analogy to explain the the importance of energy storage.

As electronics advances, the demand for high-performance batteries increases. The lithium-ion battery is currently leading the charge in powering portable electronic devices, but another lithium-based battery contender is on the horizon.

The lithium-air battery is one of the most promising research areas in current lithium-based battery technology. While researchers such as ECS’s K.M. Abraham have been on the Li-air beat since the late 90s, current research is looking to propel this technology with the hopes of commercializing it for practical use.

A new contender: Lithium-air batteries

Recently, Khalil Amine, IMLB chair; and Larry Curtiss, IMLB invited speaker, co-authored a paper detailing a lithium-air battery that could store up to five times more energy than today’s lithium-ion battery.

(MORE: Submit your abstract for IMLB today!)

This work brings society one step closer to the commercial use of lithium-air batteries. In previous works regarding Li-air, researchers continuously encountered the same phenomenon of the clogging of the pores of the electrode.

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New material could help SOFCs operate more efficiently and cheaply.
Image: Bloom Energy

Solid oxide fuel cells may be producing cleaner energy at a more efficient level soon, thanks to a development at the University of Cambridge.

A new thin-film electrolyte material, developed by a team including ECS member Sergei Kalinin, has the potential to propel portable power sources due to its ability to achieve high performance levels and very low temperatures.

Advancing fuel cells

With a huge scientific focus shift toward developing new energy technologies, fuel cells have emerged as a big contender. Transitioning from a simple laboratory curiosity in the 19th century to a main contender for powering electric vehicles, researchers have dedicated much energy to building an efficient, cost effective fuel cell.

(MORE: Read “Battery and Fuel Cell Technology“)

This from University of Cambridge:

By using thin-film electrolyte layers, micro solid oxide fuel cells offer a concentrated energy source, with potential applications in portable power sources for electronic consumer or medical devices, or those that need uninterruptable power supplies such as those used by the military or in recreational vehicles.

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Image: Penn State

With the newly popular hoverboards bursting into flames, safety in batteries has made its way to the public spotlight. To increase lithium ion battery safety, one ECS member is working to develop batteries with built in sensors to warn users of potential problems.

Chao-Yang Wang, 19-year ECS member, is taking on the challenge of making the highly popular lithium ion battery safer in light of demands for smaller, more energy efficient devices.

“Li-ion batteries essentially provide portable power for everything,” says Wang. “Your cell phone charge can now last for a week instead of a day, but it’s still the same size. The battery has a lot more energy density, you are compressing more and more energy into a smaller space, and you have to be careful when you do that. Our job is to come up with solutions to provide safety while at the same time increasing performance.”

While lithium ion batteries are typically safe under normal conditions, the battery’s flammable electrolyte solution could overheat and catch fire if it is punctured or overcharged.

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When we think of energy, often large-scale grid storage or sleek, highly-efficient lithium ion batteries that power most of our electronics are the first things that come to mind. However, for applications such as biomedical or environmental monitoring devices, there could be an alternative way to harness energy without the use of pricy technology.

Researchers have discovered the through harnessing the energy crated by small motions, a small but unlimited power supply could be generated. With electrochemical principals as the backbone of the study, MIT researchers have developed a new way to harvest energy from natural motions and activates, including something as simple as walking.

The system is based on the slight bending of a sandwich of metal and polymer sheets.

This from MIT:

Most previously designed devices for harnessing small motions have been based on the triboelectric effect (essentially friction, like rubbing a balloon against a wool sweater) or piezoelectrics (crystals that produce a small voltage when bent or compressed). These work well for high-frequency sources of motion such as those produced by the vibrations of machinery. But for typical human-scale motions such as walking or exercising, such systems have limits.

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Scientists are teaching old bacterium some new tricks in an effort to advance artificial photosynthesis.

The bacterium Moorella thermoacetica has been trained to perform photosynthesis, even though it is non-photosynthetic. All of this comes with a push to convert sunlight into valuable chemical products for a cleaner, greener energy future.

“We’ve demonstrated the first self-photosensitization of a non-photosynthetic bacterium, M. thermoacetica, with cadmium sulfide nanoparticles to produce acetic acid from carbon dioxide at efficiencies and yield that are comparable to or may even exceed the capabilities of natural photosynthesis,” says Peidong Yang, lead researcher of this work.

Previously, Yang’s work has centered around the development of the artificial “leaf,” which aims to produce natural gas from carbon dioxide. This extension of that work is still in line with the development of a clean energy future.

(MORE: Read more of Yang’s research in the ECS Digital Library.)

“In our latest study, we combined the highly efficient light harvesting of an inorganic semiconductor with the high specificity, low cost, and self-replication and self-repair of a biocatalyst,” Yang says. “By inducing the self-photosensitization of M. thermoacetica with cadmium sulfide nanoparticles, we enabled the photosynthesis of acetic acid from carbon dioxide over several days of light-dark cycles at relatively high quantum yields, demonstrating a self-replicating route toward solar-to-chemical carbon dioxide reduction.”