hydrogen
How to produce hydrogen - 3
Water electrolysis, water splitting driven by renewable electric power, can contribute to achieving the sustainable society. Its history and overview were summarized in the previous post. This post takes a step ahead, and shall detail the price of hydrogen produced by the water electrolysis.
How to produce hydrogen - 2
The previous post touched upon the methodes of producing hydrogen (see How to produce hydrogen - 1). "How to produce hydrogen using renewable electricity" - one solution to this challenge is water electrolysis. Most of you supposedly learnt about water electrolysis in high school. This post introduces briefly the water electrolysis, with a bit more details than what you had learnt in the past.
How to produce hydrogen - 1
Being the most representative energy carrier, hydrogen has been of great focues nowadays. A seires of posts, starting with this one, shall focus on the production of hydrogen; especially this post summarizes how the hydrogen has currently been produced.
How to store energy -5
Hydrogen exists in gasous form in the standard condition due to its quite low boiling point, meaning that it is difficult to store and transport. This drawback, however, does not lead to a conclusion of giving up the use of hydrogen, because hydrogen also has another strong benefits in its production and usage. Hydrogen and its derivative are to be discussed in the series of posts, by considering "how small the volmetric energy density can become".
How to store energy -4
Hydrogen exists in gasous form in the standard condition due to its quite low boiling point, meaning that it is difficult to store and transport. This drawback, however, does not lead to a conclusion of giving up the use of hydrogen, because hydrogen also has another strong benefits in its production and usage. Hydrogen and its derivative are to be discussed in the series of posts, by considering "how small the volmetric energy density can become".
How to store energy -3
Hydrogen exists in gasous form in the standard condition due to its quite low boiling point, meaning that it is difficult to store and transport. This drawback, however, does not lead to a conclusion of giving up the use of hydrogen, because hydrogen also has another strong benefits in its production and usage. Hydrogen and its derivative are to be discussed in the series of posts, by considering "how small the volmetric energy density can become".
How to store energy -2
Hydrogen exists in gasous form in the standard condition due to its quite low boiling point, meaning that it is difficult to store and transport. This drawback, however, does not lead to a conclusion of giving up the use of hydrogen, because hydrogen also has another strong benefits in its production and usage. Hydrogen and its derivative are to be discussed in the series of posts, by considering "how small the volmetric energy density can become".
How to store energy -1
Hydrogen exists in gasous form in the standard condition due to its quite low boiling point, meaning that it is difficult to store and transport. This drawback, however, does not lead to a conclusion of giving up the use of hydrogen, because hydrogen also has another strong benefits in its production and usage. Hydrogen and its derivative are to be discussed in the series of posts, by considering "how small the volmetric energy density can become".
Hydrogen as an energy carrier?
Renewable electric power is converted into energy carrier for storate or transportation. The energy carrier preferably contains "large amount of energy" in "small volume, small weight". What is the most suitable material for the energy carrier? A close look at the periodic table may point to hydrogen, located at that top-left corner. This posts discusses the characteristics of hydrogen as an energy carrier.
"drainage" of fuel cell vehicle?
The fuel cell vehicle is driven by the energy released from a reaction between hydrogen and oxygen, and therefore discharges water of quantity same as the consumed hydrogen. How much of water does a fuel cell vehicle discharge?