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A lightweight solid-state hydrogen storage power system for fuel cell exhaust water reuse

A fuel cell and power system technology, applied in fuel cells, electrical components, circuits, etc., can solve the problems of low hydrogen storage capacity of ammonia borane and affect hydrogen storage performance, so as to improve safety, improve heat exchange efficiency and Productivity of cooling water, effect of volume reduction

Active Publication Date: 2021-01-19
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Theoretical calculations show that the hydrogen storage capacity of ammonia borane can reach 19.6wt%. This type of light element hydride releases hydrogen through a hydrolysis reaction with water, and the reaction conditions are mild and the hydrogen release performance is good. It is very suitable for portable occasions, but Because water is also a reactant in the reaction process, the quality of water needs to be included in the calculation of the hydrogen storage capacity of the system, and the effective mass hydrogen storage capacity of water is only 5.5wt%, so that the hydrogen storage capacity of the hydrolyzed ammonia borane is relatively low. affect its hydrogen storage performance

Method used

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  • A lightweight solid-state hydrogen storage power system for fuel cell exhaust water reuse
  • A lightweight solid-state hydrogen storage power system for fuel cell exhaust water reuse
  • A lightweight solid-state hydrogen storage power system for fuel cell exhaust water reuse

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Experimental program
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Effect test

Embodiment 1

[0042] The hydrogen supply pipeline 20 is connected to the anode inlet 4 of the proton exchange membrane fuel cell, and from the hydrogen supply pipeline 20 to the anode inlet 4 of the hydrogen fuel cell, the hydrogen supply pipeline 20 is sequentially provided with a first valve 2 and a flow controller 3; The water inlet pipeline 21 is connected to the water outlet pipeline 12 of the water vapor cooling device 9, from the water inlet pipeline 21 to the water outlet pipeline 12, a check valve 14 and a pump 13 are arranged in sequence on the water inlet pipeline 21; There is a pressure switch 15, the pressure measuring pipeline 22 communicates with the gas buffer zone 19, so that the pressure switch 15 can measure the pressure in the gas buffer zone 19 in real time, and the pressure switch 15 transmits the pressure signal to the semiconductor refrigeration chip 11 and the pump 13, forming Dehydrogenation control device 16: control the pumping rate of pump 13 through pressure swi...

Embodiment 2

[0054] see Figure 5, compared to the proton exchange membrane fuel cell water is generated at the fuel cell cathode, the alkaline fuel cell water is generated at the fuel cell anode 32, and its anode reaction equation is shown in formula (3). The rear end of the anode 32 is the cathode 31, and the exhaust gas output end of the cathode 31 is fixedly connected with the first end surface of the exhaust device 8, and the exhaust device 8 allows air to flow from the anode 32 to the cathode to supply oxygen to the cathode 31 , can push the air discharged from the cathode 31 into the water vapor cooling device 9 at the same time; in order to reclaim the moisture in the anode tail gas, it is necessary to introduce the fuel cell anode tail gas into the water vapor cooling device 9, so the anode outlet 7 of the fuel cell and the water vapor cooling device 9 An anode exhaust pipeline 33 is added in the middle, the anode exhaust pipeline 33 is fixedly connected with the upper wall of the...

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Abstract

The invention discloses a light solid-state hydrogen storage power system for water reuse of fuel cell exhaust gas. The system is characterized in that hydrogen released from a hydrogen source systementers a hydrogen fuel cell, the exhaust gas generated by the hydrogen fuel cell and a part of the air enter a water vapor cooling device, and the cooling water condensed by the water vapor cooling device is injected into the hydrogen source system through a water outlet pipe and a water inlet pipe. The system is advantaged in that light element hydride (a light element hydride bed) is utilized, the water produced after hydrogen electrochemical reaction is recovered and returned to the hydrogen source system for hydrolysis reaction with the light element hydride to produce hydrogen, the weightof the reactant water is eliminated to increase the mass hydrogen storage amount of the system, under the same hydrogen release effect, the system mass is reduced.

Description

【Technical field】 [0001] The invention belongs to the technical field of hydrogen energy application, and in particular relates to a light-duty solid-state hydrogen storage power system for reusing fuel cell tail gas water. 【Background technique】 [0002] Extensive use of fossil fuels, on the one hand, has caused people to worry about a possible energy crisis in the future, and on the other hand, has caused serious environmental pollution, such as smog, acid rain, and global warming. Hydrogen is clean and environmentally friendly, and has abundant reserves on the earth. It is an ideal alternative energy source. However, there are still big problems in the way of hydrogen storage at present, which limits the development of hydrogen energy. According to the classification of hydrogen storage methods, the current hydrogen power systems mainly include the following types: [0003] (1) The high-pressure hydrogen storage power system uses gas cylinders to store hydrogen at a pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/0662H01M8/0606
CPCH01M8/0606H01M8/0662Y02E60/50
Inventor 吴震尧兢朱鹏飞张早校
Owner XI AN JIAOTONG UNIV
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