Study On The Micro Fuel Cell System For Hydrogen Production By Alcoholysis

In the process of world development,energy is a great factor for the rapid progress of human beings.However,with the continuous development of non renewable energy sources such as coal and oil,the human living environment is now threatened,and this kind of energy will eventually be consumed all,so finding new energy sources has become a top priority.Among many new energy sources,hydrogen energy has become a popular and highly efficient new energy source because of its high efficiency and high efficiency.Now hydrogen and oxygen fuel cells have begun to be put into use,of which large hydrogen oxygen fuel cells are widely used,but there are few studies on small and portable fuel cell systems.One of the important reasons that restricts the development of small fuel cells is the storage of hydrogen energy.The high pressure hydrogen storage equipment used in large fuel cells is too large and heavy to be used in small portable fuel cell systems.Therefore,the development and research of small hydrogen supply devices have become a difficult problem to be solved urgently.In this paper,a new way of hydrogen production is designed for the research of small fuel cell system,that is,the reaction of sodium borohydride to methanol has improved the deficiency of the traditional hydrolysis of sodium borohydride.The hydrogen production reaction of sodium borohydride and methanol was first tested and studied.The feasibility of the hydrogen production method was studied.After that,the structure of hydrogen generator was designed.At the same time,a variety of reaction modes were carried out.Finally,a reaction mode with high hydrogen production efficiency was confirmed.It is the final structure.Considering that the methanol vapor in the tail gas will cause great damage to the hydrogen and oxygen fuel cell,the gas treatment and purification device is designed,the methanol injection is injected by the peristaltic pump,and the flow velocity of methanol is determined by repeated experiments,and the logic circuit is used to control it.The principle and internal structure of proton exchange membrane fuel cell(PEMFC)are studied and the traditional hydrogen oxygen fuel cell is improved.The air self breathing fuel cell suitable for the use of small fuel cell system is obtained,and the battery is encapsulated.The fuel chamber,the reaction chamber,the gas purification device and the logic control part are integrated together,connected to the packed battery,and the system is built to test the system startup speed and the system output characteristics.The integrated fuel cell system needs to be put into the 5g sodium borohydride into the methanol at the same time as 33 ml.The hydrogen generator can stabilize hydrogen production at about 140ml/min at the initial 1ml/min stability at the 0.5ml/min peristaltic pump injection of methanol.The output power of the system is 5.33 W under the output current of 1A and the system weight is 507.92 g,which can be stable.Work for 80 minutes.The system works stably and has stable output power.It is a good small fuel cell system.