Award Data

Despite incremental improvements in the technology, polyfluorosulfonic acid (PFSA) membranes are still not an ideal fuel cell membrane material and their drawbacks (e.g., high cost and low mechanical strength at high temperature) require development of alternative polymer electrolyte membranes (PEMs) for successful adoption of fuel cells as reliable and inexpensive energy conversion devices. The g ...

This SBIR/STTR project targets the development of a validated modeling/design tool for predicting the behavior of spouted fluidizied beds for chemical looping combustion/gasification applications of coal and biomass fuels and fuel blends. Chemical looping is an advanced energy conversion technology for generating a pure CO2 effluent, which can then be sequestered or utilized. A spouted fluidized b ...

The Brayton cycle for power generation offers significant advantages over the Rankin cycle typically used. Unfortunately, the Brayton cycle uses very high pressure and high temperature, supercritical CO2 (sCO2) as the heat transfer fluid. New materials that can handle the harsh environment of sCO2 are required to enable power generation and prevent issues with corrosion and erosion or efficiency d ...

Renewable sources of energy including solar and wind are fast gaining ground on fossil fuels, in part because of their sustainability and environmental benefits. A major issue, however, has been finding efficient ways to store the energy that renewables generate for use when the demand for energy is high. Lithium-­‐sulfur batteries, which store electrical energy by transferring electrons to or ...

The rate of climate change in the Arctic is larger than elsewhere on Earth. The Arctic has unique and complex couplings and feedbacks between the surface and the atmosphere that in turn modify the radiative balance there differently than elsewhere. Current understanding holds that an increase in downwelling long wave radiative flux, driven by increased water vapor and clouds, may be accelerating c ...

Density functional theory is used by many researchers funded by the Department of Energy as a method for predicting the behavior of chemicals and materials used in energy applications. However, results of these calculations are often not standardized and, even when they are, expert-level understand of the methods is needed in order to properly perform a simulation. The energy research community a ...

The Department of Energy has a mission to ensure America's prosperity and security by addressing energy and environmental challenges. This Phase I project aims to produce domestic, economic and environmentally responsible biodiesel fuel from brown grease, a waste that is currently disposed in landfills or incinerated. The conversion of "brown grease" from wastewater treatment plant’s fats oils a ...

Currently, the most promising types of radiotherapy is proton or carbon therapy, as they have demonstrated significant improvements in clinical efficiency and reduced toxicity profiles. Unfortunately, the high cost of treatments using both proton and carbon beams is the limiting factor preventing hadron therapy from becoming the standard of care for a wider range of cancers. Designing a linear acc ...

There is a continuing need for high power circulators to protect the next generation of high power RF sources from waveguide reflections that can destroy the device. Currently, the power level of circulators is limited by the materials, specifically ferrites that provide the required non-reciprocal operation. New approaches are required that use materials capable of very high power operation. Stat ...

Replacement of petroleum based vehicles with fuel cell electric vehicles operating on hydrogen produced from domestically available resources would dramatically decrease emissions of greenhouse gases and other pollutants as well as reduce dependence on oil from politically volatile regions of the world. One major inhibitor to a hydrogen society is the lack of infrastructure, which requires hydroge ...