Solid hydrogen fuel, manufacturing method and use method thereof

Abstract

The invention relates to a solid hydrogen fuel which is a solid compressed block. In the manufacturing process of the solid hydrogen fuel, at least one hydride powder and at least one hydrogen-generating catalyst powder are uniformly mixed, and then the mixed powder is taken out and compressed into blocks; when the solid hydrogen fuel is used, the solid hydrogen fuel is mixed with water to generate hydrogen, wherein the hydride powder and the water are subject to a hydrogen-generating reaction, and the hydrogen-generating catalyst powder is used for catalyzing the hydrogen-generating reaction to generate hydrogen. The solid hydride has higher hydrogen generation, and can release hydrogen effectively and completely.

Description

technical field [0001] The present invention relates to a solid hydrogen fuel and its manufacturing method and usage method, and in particular to a solid hydrogen fuel and its usage method which can be easily used and can effectively release hydrogen and break through the limitation of traditional liquid hydrogen fuel. Background technique [0002] A fuel cell is a device that can convert chemical energy into electrical energy. As long as fuel and oxidant can be continuously supplied to the fuel cell, electrical energy can be obtained continuously. For hydrogen fuel cells, the fuel is hydrogen and the oxidant is oxygen. However, hydrogen is a dangerous, flammable gas and must be stored under harsh conditions. Therefore, traditionally, an aqueous hydride solution or a hydrogen storage material containing hydrogen is usually used as a hydrogen source, and hydrogen is extracted therefrom for use in a fuel cell. [0003] The following briefly introduces a hydrogen production s...

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Problems solved by technology

[0009] However, in addition to the aforementioned solubility of sodium borate in water, such as Figure 2B As shown, the hydrogen depletion curve using traditional liquid hydrogen fuel shows that the hydrogen release rate drops sharply after the initial hydrogen depletion, and it maintains a low hydrogen depletion rate for a long time after it reaches point A, and it still shows a low rate of hydrogen depletion until the end of the time axis. state

Therefore, traditional liquid hydrogen fuel cannot release hydrogen in a short time

[0010] To sum up, the use of liquid fuels reduces the theoretical production of hydrogen from 10.8wt% to 4.6wt% due to solubility problems, resulting in a large loss of hydrogen storage capacity, even with larger capacity fuel tanks and recovery tanks. To make up for the loss, its huge volume will also cause a burden on the application of fuel cells

Moreover, the use of liquid hydrogen sources such as sodium borohydride aqueous solution will also make the design of the system mechanism more complicated, resulting in limited product applicability

Furthermore, as far as the traditional method of utilizing catalyst and aqueous sodium borohydride contact reaction to release hydrogen is concerned, there is also the problem that hydrogen cannot be released in a short period of time.

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