**Hydrogen fuel cells for cars of the future-4

Continuation of 3rd part
All the countries have planned to use the hydrogen cell because of its cost and reliability. Since hydrogen fuel cells also help to control the pollution, government of all countries prefers the hydrogen cell. Currently, hydrogen fuel cells are costly to produce and are fragile. Engineers are studying how to produce inexpensive fuel cells that are robust enough to survive the bumps and vibrations that all automobiles experience. Also, many designs require rare substances such as platinum as a catalyst in order to work properly. Such a catalyst can also become contaminated by impurities in the hydrogen supply. In the past few years, however, a nickel-tin nanometal catalyst has been under development which may lower the cost of cells.
To be continued...