ABB_id2059
in News Departments > New & Noteworthy
print the content item

Researchers at the Maryland NanoCenter at the University of Maryland, College Park, have developed new systems for storing electrical energy derived from alternative sources that are, in some cases, 10 times more efficient than what is commercially available.

"Renewable energy sources like solar and wind provide time-varying, somewhat unpredictable energy supply, which must be captured and stored as electrical energy until demanded," says Gary Rubloff, director of the University of Maryland's NanoCenter. "Conventional devices to store and deliver electrical energy - batteries and capacitors - cannot achieve the needed combination of high energy density, high power and fast recharge that are essential for our energy future."

Researchers working with Rubloff and his collaborator, Sang Bok Lee, have developed a method to significantly enhance the performance of electrical energy storage devices.

Using new processes central to nanotechnology, researchers create millions of identical nanostructures with shapes tailored to transport energy as electrons rapidly to and from very large surface areas where they are stored. Materials behave according to physical laws of nature.

The Maryland researchers exploit unusual combinations of these behaviors (called self-assembly, self-limiting reaction and self-alignment) to construct millions of tiny, virtually identical nanostructures to receive, store and deliver electrical energy.

The Maryland research team's new devices are electrostatic nanocapacitors, which dramatically increase energy-storage density of such devices - by a factor of 10 over that of commercially available devices - without sacrificing the high power they traditionally characteristically offer, according to the Maryland NanoCenter.

This advance brings electrostatic devices to a performance level competitive with electrochemical capacitors and introduces a new player into the field of candidates for next-generation electrical energy storage.

SOURCE: Maryland NanoCenter

Hybrid Energy Innovations 2015

Trachte_id2056
Latest Top Stories

High Net-Worth Investors Claim ‘All Of The Above’ On Energy; Renewable And Otherwise

According to a recent Morgan Stanley poll, high-dollar investors favor investment in renewable energy technologies, such as wind and solar.


U.S. Wind Power Installations Surpassed 4.7 GW Last Year, Although China Still Leads

Bloomberg New Energy Finance reports that U.S. wind installations came back in a big way from a disappointing 2013.


IRS Specifies Performance, Quality Standards For Small Wind Turbines

The Internal Revenue Service (IRS) recently issued guidelines creating safety and performance standards for small wind turbines to be eligible for the 30% investment tax credit.


Hot Times North Of The Border: Canada Tops Previous Record For Installed Wind Capacity

For the second consecutive year, Canada's wind market has bested the country's previous mark for new installations.


Report: Policy Uncertainty Fuels Market Exodus As Firms Bolt North American Wind Industry

The global wind energy supply chain has yet to recover from the slump that began in 2013. In fact, many segments are undergoing a transformation, according to market research firm FTI Consulting.

Hybrid Energy Innovations 2015