The history and principle of hydrogen energy
How was hydrogen discovered? At the end of the 15th century, European chemists discovered the existence of hydrogen while searching for the origin of water. Then in the late 18th century, the British scientist Henry Cavendish , in the process of flammable air experiments, proved that only water is produced after the combination of hydrogen and oxygen. In the same period, is called Anthony Lavoisier, the father of modern chemistry. The analysis of water composition determined that water is composed of hydrogen and oxygen, and formally proposed the element name hydrogen. Before then, hydrogen had been called flammable air, and hydrogen had unlimited possibilities.
As a result, in the 18th century, French inventors used the relatively low density of hydrogen to produce the first hydrogen balloon. However, due to technical limitations, hydrogen could not be used as a fuel, so hydrogen How is it gradually developed for energy use? In 1839, William Robert Grove of the Royal Society of of , based on the principle of water electrolysis, proposed the idea of using hydrogen and oxygen to generate electricity in reverse. Based on this idea, successfully developed the world's first safety The environmentally friendly hydrogen fuel cell . Later in 1939, Francis Bacon of Cambridge University installed this hydrogen fuel cell on a forklift and successfully conducted a test drive.
In 1950, Austrian scientist Karl Kotex successfully developed the hydrogen fuel cell vehicle for the first time,Based on the design results of Calcortex, in 1960, the American automobile manufacturer GM invested 200 researchers to design a hydrogen fuel cell vehicle. About the same period, Europe also had hydrogen Active research has been carried out on the development of fuel cell vehicles. German car manufacturer Daimler-Benz announced the successful development of hydrogen fuel cell buses. Then in 1999, Mercedes-Benz released a small car equipped with a small fuel cell system.
In short, hydrogen energy has been researched and developed by numerous scientists, and now it has become an indispensable environmental energy source for automobiles.
In this article, Niu will take an inventory of the top ten leading hydrogen energy companies.
a, Meijin Energy
total hydrogen energy leader
company semi-annual net The return on assets is 11.27%,Gross profit margin is 32.93%, half-yearly reported revenue is 8.893 billion, a year-on-year increase of 69.55%, net profit is 1.249 billion, a year-on-year increase of 1909.35%, and the current total market value is 59.997 billion. The dynamic P/E ratio of is 24.02.
two, thick & Poor's shares
hydrogen energy leader
company's semi-annual net assets yield 1.58%, gross margin 28.75 %, half-yearly reported revenue of 357 million, a year-on-year increase of 119.68%, net profit of 17 million, a year-on-year increase of 156.07%, the current total market value of 9.815 billion, a dynamic price-earnings ratio of 294.26.
three, all diesel powered
hydrogen fuel cells leading
company's semi-annual net assets yield 5.10 percent,Gross profit margin was 12.28%, half-yearly reported revenue was 2.698 billion, a year-on-year increase of 24.39%, net profit was 113 million, a year-on-year increase of 14.94%, and the current total market value was 5.358 billion, with a dynamic price-earnings ratio of 23.64.
four, Weichai Power
my country's heavy truck industry leader
company's semi-annual net assets yield 11.25%, Gross profit margin was 18.84%, semi-annual revenue was 126.388 billion, a year-on-year increase of 33.75%, net profit was 6.432 billion, a year-on-year increase of 37.42%, and the current total market value was 16.69 billion, and the dynamic price-earnings ratio was 13.22.
five,
snowman ice machine industry's leading shares
company's semi-annual ROE -1.35% Gross profit margin is 13.56%, half-yearly reported revenue is 820 million yuan,A year-on-year increase of 36.98%, net profit of -28 million, a year-on-year increase of 0.87%, the current total market value of 5.447 billion, and a dynamic price-earnings ratio of -95.87.
6. Zhongtai Stock
domestic deep-cooling equipment leader _span3 p2 5.3% annual net profit rate
seven, Ocean Motor
brushless motor leading enterprises
company's semi-annual ROE 2.79%, gross profit margin 19.00%, half-yearly reported revenue of 4.65 billion, a year-on-year increase of 32.66%, net profit of 240 million, a year-on-year increase of 213.95%,The current total market value is 19.374 billion, and the dynamic price-earnings ratio is 40.42.
Eight, Zhejiang can
new energy industry leading
company's semi-annual net assets yield 3.29%, gross margin 56.88%, half-yearly reported revenue of 1.319 billion, a year-on-year increase of 9.83%, net profit of 223 million, a year-on-year increase of 29.48%, the current total market value of 27.498 billion, and a dynamic price-earnings ratio of 61.55.
nine, Yang coal chemical
domestic coal chemical industry leader
company's semi-annual net assets yield 5.89 percent, Gross profit margin is 12.65%, semi-annual revenue is 9.445 billion, a year-on-year increase of 14.76%, net profit is 336 million, a year-on-year increase of 154.3%, the current total market value is 13.828 billion, and the dynamic price-earnings ratio is 20.60.
reported net profit rate of X. Forui Special Equipment
LNG industry chain equipment manufacturing leader in the whole industry chain _strong112p _p13sp img p img ppan3span _strong8p _p13 6% Gross profit margin was 19.81%, half-yearly reported revenue was 856 million, a year-on-year decrease of 1.1%, net profit was 32 million, a year-on-year increase of 2.05%, the current total market value was 5.817 billion, and the dynamic price-earnings ratio was 91.29.
The last digit: ( )
( Hydrogen energy) faucet
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The last one, which one do you think it will be?
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