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Wen/Everything Knowledge Bureau

Editor/Everything Knowledge Bureau

Everyone knows that oil is praised asBlack GoldThis not only reflects its high price, but also expresses its particularly high value. In recent years, due to the increase in global crude oil prices and the impact of international social relations and wars, the price of oil has skyrocketed all the way.

As the industrial blood of the 21st century, people's lives may require the participation of oil in all aspects. In everyone's impression, the use of oil is as fuel, which is also an extremely correct impression. We haveseventy-two percentAll petroleum is used to make various fuels, however, in addition to being used as fuel, petroleum can also be used to produce plastics, rubber, lubricants, and cleaning products.

It can also be used to produce asphalt and processed into a natural asphalt for road paving. The fabrics such as polyester, acrylic, and cotton that we see in clothing labels are also produced from petroleum, and even the cosmetics commonly used by girls contain up to80%Oil. Because of this, the price of oil has always been at a relatively high level, and it is still something we have to consume.

However, now, an experiment conducted by Chinese experts is likely to lead to a sharp drop in future oil prices, even toPrice of CabbageWhat is the level of technology? Can it really replace the current role of oil?

In fact, the sharp decline in oil prices has little to do with it itself, but rather with the discovery of a substitute for oil in ChinaHydrogen energyHydrogen energy.

Around the beginning of June, our countryXinghua Bay, FujianChina Dongfang Electric Group, Shenzhen University/Sichuan UniversityAcademician Xie HepingThe team conducted a national first"Offshore wind power desalination free seawater in-situ direct electrolysis hydrogen production technology"The experiment was a complete success.

Although the name of this experiment is long and obscure, the success of this experiment is a real breakthrough in the global technology of hydrogen production from seawater electrolysis, and also a successful solution to a problem that has puzzled the whole world for half a century.

And this is called"In situ direct electrolysis hydrogen production technology without desalination of seawater"By utilizing a specially designed electrode structure and catalyst material, a barrier that combines electrochemistry and physical mechanics is formed inside the electrolytic cell. The existence of this barrier isolates most of the salt and impurities in seawater, while also ensuring that current can be evenly transmitted between the two electrodes.

And it is precisely because of this method that high-purity, high-pressure, and low-temperature oxygen can be generated at the anode, while high-purity, high-pressure, and low-temperature hydrogen can also be generated at the cathode, and there is no pollution generated during the entire process, nor does it consume any freshwater resources.

And the success of this technology in our country means that we can establish aIntegrated in-situ seawater hydrogen production plantAnd renewable energy such as wind and solar energy can provide power for the electrolysis of seawater, and the oxygen generated during the hydrogen production process can also be released into the air or applied to the aquaculture industry.

Actually, as early as November 30, 2022, Xie Heping's team had published a magazineNatureOn, the achievements of the technology of direct electrolysis of seawater to produce hydrogen were published, and this technology theory also successfully supported the success of this experiment in Fujian. During the sea trial of Fuqing Xinghua Bay wind power generation, within ten consecutive days, the Xinghua Bay was greeted with extreme harsh environments such as force eight gales, one meter high waves, and even rainstorm.

This is a coincidence, but it also put the sea trial to the test, and our batch of electrolytic hydrogen production equipment was also very successful, withstanding the test of nature and maintaining a complete and continuous operation within ten days240 hoursThe above stable operation, and the final hydrogen concentration produced is also as high as99.9%Even up to 99.99%.

And the cost required for this technology is also particularly reasonable. If taxes, financial fees, and other costs are ignored, this set of offshore wind power equipment can use 4000 hours per year and generate 100000 kilowatt hours of electricity. In other words, the price of this equipment is 5000 yuan per kilowatt. If the cost of regular operation and maintenance is added, it is about the sameThe cost per kilowatt hour of electricity is around six cents.

And if, on the basis of these, the enterprise can also be the same as Dongfang Electric, which is both a power generation enterprise and a hydrogen production enterprise, then the enterprise will only need more than 30 cents but less than 40 cents to produce a cubic meter of hydrogen, and the cost of a kilogram will only needFour yuan RMB.

It can even be said without exaggeration that as long as we can make this technology mature, there will be no shortage of demand in the market, after all, the world is promoting it nowCarbon neutralityenergy.

Although we say hydrogen can be used to replace oil, the scope of its use is still very broad. Therefore, when we talk about using hydrogen to replace oil, we mainly focus onenergy.

energy1.5Tripleenergy.

Moreover, hydrogen is very flexible to use and has a particularly high efficiency. Petroleum generates energy through combustion, and the maximum efficiency of using this energy is about30%~40%30%~40%.

Hydrogen energyHydrogen energy90%The energy can be converted into the electrical energy or kinetic energy we want, and in general, to achieve this ultra-high efficiency, we need to use a method calledfuel cell.

andfuel cell.

Hydrogen energyenergyNitrogen oxide compoundHydrogen energyZero carbon emissionsHydrogen energy.

Hydrogen energyHydrogen energyand70%Hydrogen energy.energyThe world's largest hydrogen mine.

The earliest proposal in the worldSea water hydrogen production technologyVestasandenergySea water hydrogen production technologyand.

andSea water hydrogen production technologyand.

Over the years of exploration, offshore hydrogen production has been mainly divided into two ways:Indirect hydrogen productionandDirect system,.Indirect hydrogen production.

Due to the complexity of seawaterMulticomponent aqueous solution90and90and.

.

Sea water hydrogen production technology.

The main pathways for direct hydrogen production areHydrogen production by photolysis of waterandHydrogen production by Electrolysed water.Hydrogen production by photolysis of waterand.

And now, China has successfully conducted experiments in Fujian"Offshore wind power desalination free seawater in-situ direct electrolysis hydrogen production technology"Is the direct hydrogen production pathway usedFor electrolytic water heaterand.

energy.

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