燃料电池介绍英语ppt文稿

燃料电池介绍英语ppt文稿

1 Hello everyone, before the presentation, I’d like to ask you

a question: how many kinds of power that can propel cars do you know? Gasoline, diesel oil, natural gas, lithium battery,solar energy and nuclear may be. But today, I will introduce a new promising energy—fuel cell. I call it as one kind of promising energy because our driving life will completely change in the future due to the widely using fuel cell as car’s power. Fuel cell is a battery that direct

transformation of chemical energy into electricity. This cell is not only a electrochemical power source but also a power plant.

2 As we can see in the photos,the energy transformation ratio of combustion engine is between 25% ～45%, however, this ratio will increasing twice in the fuel cell vehicle. Here let us consider the most important influence of cars: pollution. Traditional vehicles have made the air unhealthy for people to breath, the primary pollutant are CO,PM10,PM2.5 and so on. We are familiar with PM2.5, if you haven’t know it,but at lest you breath it.while the emission of a fuel cell vehicle expel just water and CO2

3 After you have heard that kind of cell,next I will tell you the structure,mechanism and advancement of the cell.

4 First, I will introduce you the structure of the cell. Look at the picture,a fuel cell is assembled by cathode,anode,electrolyte,catalyst and fuels. besides , many cell have reformer to oxidate fuels before it participate cell reaction.This table shows different kinds of fuel cell. As we can see that different fuel cell have different electrode and electrolyte. Besides,the fuel material is also different.

5 Now, let’s consider about the mechanism of the battery. I use the example of solid oxide fuel cell to show you the mechanism. As we can see, H2,CO and air is bubbled in the reformer device. CO is oxidated into CO2 and produce H2 just as this chemical reaction. All H2 thread the cathode channel just like the air thread the anode canal,H2 and O2 react in electrolyte and this two

reactions are the source of electric energy. Electrons which were producted on the fuel electrode and the oxidation electrode are transmit on electrode surface and orientation, but the movement order are reverse. As a consequence of movement of electron in the external circuit ,electricity was generated. At the same time,the by-products are expel from cell.

6 At last,I’d like to discuss the advancement of this kind of battery. As we have learned that fuel cell is an promising power source in the future, however,you may realize that there are several problem should be solve before large-scale industrial manufacture. First challenge is the H2 storage facilities. We have to keep the user’ safety when they chose a fuel cell vehicle and also provide enough fuel station to satisfy the consumer’s demand. Besides,fuel cell like PEMFC,MCFC need noble metal as electrode’s carrier such as palladium,platinum and so on. Last, sable

catalysts haven’t been find out to make the cell staring up instantly,and decrease the consume of the electrolyte. All this challenges are the reason why I am here and also the primary task our research group to study in the following 3 years or may be last as long. But I firmly believe that our endeavor will propel the development of this new power source.

7 Thank you.