News tagged with fuel cell
Related topics: hydrogen , catalyst , energy , electricity , chemical reactions
A fuel cell is an electrochemical conversion device. It produces electricity from fuel (on the anode side) and an oxidant (on the cathode side), which react in the presence of an electrolyte. The reactants flow into the cell, and the reaction products flow out of it, while the electrolyte remains within it. Fuel cells can operate virtually continuously as long as the necessary flows are maintained.
Fuel cells are different from electrochemical cell batteries in that they consume reactant from an external source, which must be replenished – a thermodynamically open system. By contrast, batteries store electrical energy chemically and hence represent a thermodynamically closed system.
Many combinations of fuels and oxidants are possible. A hydrogen fuel cell uses hydrogen as its fuel and oxygen (usually from air) as its oxidant. Other fuels include hydrocarbons and alcohols. Other oxidants include chlorine and chlorine dioxide.
The principle of the fuel cell had been demonstrated by Sir William Grove in 1839, and other investigators had experimented with various forms of fuel cell. The first practical fuel cell was developed by Francis Thomas Bacon in 1959.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
Measuring enzyme levels in cancer patients may reveal healthy cells' ability to survive chemotherapy
New research from MIT may allow scientists to develop a test that can predict the severity of side effects of some common chemotherapy agents in individual patients, allowing doctors to tailor treatments ...
Genetics Apr 05, 2013 | not rated yet | 0 |
(Medical Xpress)—Healthy cells don't just happen. As they grow and divide, they need checks and balances to ensure they function properly while adapting to changing conditions around them.
Cancer Apr 05, 2013 | 5 / 5 (4) | 2 |
(Medical Xpress)—New research demonstrates that the cellular metabolism of certain immune cells is closely linked to their function, which includes protecting against viral infections and the development of tumours.
Medical research Dec 24, 2012 | 5 / 5 (4) | 0 |
A small clinical trial led by researchers at UC San Diego School of Medicine and VA San Diego Healthcare System (VASDHS) found that patients with advanced heart failure and type 2 diabetes showed improved mitochondrial structure ...
Health Mar 02, 2012 | 5 / 5 (4) | 0 |
Researchers at Rush University Medical Center are conducting an early phase clinical trial of a novel drug therapy for patients with dementia due to Alzheimer's disease. The drug is a new compound called MSDC-0160, which ...
Alzheimer's disease & dementia Feb 15, 2012 | 5 / 5 (2) | 0
Muscle performance and fitness are partly determined by how well your muscle cells use sugar as a fuel source. In turn, exercising improves the muscle's ability to take up sugars from the bloodstream and burn ...
Genetics Nov 30, 2011 | 5 / 5 (1) | 1 |