I have read the following article on recent research in the hydrogen fuel field. Basically, hydrogen is seen as the next generation fuel. It is considered cleans since it only emits water vapour. It is also freely available because hydrogen can be extracted from water.
The problem with hydrogen is that it is a gas and therefore there are safety concerns on its storage on vehicles (think accidents). Well, now they have found that it can be turned into a liquid state with the help of nitrogen and then some form of mechanism releases the hydrogen gas into the hydrogen working engine. What is good about this, as the authors of the study claim, is that the existing infrastructure (petrols tanks, stations etc) can be used since hydrogen will be stored as a liquid fuel.
To read the full article, log on to Nature
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