Oncology & Cancer

Scientists uncover technique to cut off cancer's fuel supply

Scientists at The University of Texas at Austin have discovered how an aggressive and deadly form of leukemia fuels its growth. In an experimental study, they were able to curb the cancer's growth without harming healthy ...

Oncology & Cancer

How air pollution can cause lung cancer in non-smokers

A new study led by researchers at UCL and the Francis Crick Institute has demonstrated for the first time how air pollution can cause lung cancer in people who have never smoked.

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Fuel cell

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.

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