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Yang Jie was also overjoyed to hear the news, he knew that the energy conversion efficiency of hydrogen and oxygen fuel cells could theoretically reach more than 60%, but these were just things on paper, he knew that hydrogen and oxygen fuel cells have been limited by the conductivity of the proton exchange membrane and the efficiency of the catalyst, resulting in the energy conversion rate of hydrogen and oxygen fuel cells has been low.

In his memory of his previous life, the energy density of Toyota's hydrogen-oxygen fuel cell stack can only reach 3.1kh/L, which is very close to the energy density of gasoline engines.

As a reborn, although Yang Jie has not developed fuel cells before, he has read a lot of papers and technical literature in this area, and after finding Victor's technical team, he also directly revealed the technical route and many specific technical methods to Victor in advance.

In fact, a lot of R&D almost pierced this layer of window paper, and after this layer of window paper was pierced by Yang Jie, Victor's R&D speed was naturally extremely fast.

Yang Jie asked at this time: "How high is the energy density of the newly developed stack?"

"Through the test, the energy density of the new stack can reach 3.2 kh/L, which is now more than the energy density of the existing internal combustion engine!"

Yang Jie said in surprise: "That's really good news!"

In the memory of the previous life, Toyota is at the forefront of the technical field of hydrogen and oxygen fuel cells, they can only achieve 1.3kh/L in 08 years, they only achieved it in 16 years, and now the electrochemistry laboratory can do 3.1kh/L, and now Victor They can do this energy density is indeed at the forefront of the world, and now it is only one step away from the large-scale use of fuel cells.

"In addition, we have carried out accelerated tests on the iridium cobalt alloy catalyst prepared in the laboratory, and after 40,000 cycles, the activity degree can be maintained at 78%, which can ensure the life of the fuel cell to reach 30,000 hours. Victor said excitedly.

"Very good!" Yang Jie said happily.

For more than two years, Yang Jie has spent almost more than 2 billion yuan in the electrochemistry laboratory, asking for equipment for equipment, people for people, and money for money, and the enterprises and research institutions associated with Huaxing Technology Group Co., Ltd. are fully cooperating, and Yang Jie also said the technical solutions in the future in advance, and finally pushed the hydrogen fuel cell forward in a very short period of time!

In fact, Huaxia has also carried out a technical layout in the development of fuel cells, but many are in the experimental stage, and the allocated funds are very small, fuel cell technology is in the 863 plan, but up to now, a total of less than 100 million funds have been allocated, and then the country has money, but the allocated funds are less than one billion, and Toyota has been developing fuel cells since the nineties, and has been developing for nearly 20 years, investing tens of billions.

In the previous life, Toyota had more than 15,000 technical patents for fuel cell vehicles, of which 10,000 patents were valid.

However, Toyota applied for less than 200 technical patents for fuel cell vehicles last year, and in the past two years, the electrochemistry laboratory has applied for more than 2,000 technical patents in proton exchange membranes, electrodes, hydrogen pumps, drain valves, hydrogen-containing mixture separation and purification technology, high-pressure hydrogen tanks, etc., and more than 600 technical patents have been applied for in the first half of this year alone.

At present, there are more than 600 R&D personnel in the electrochemistry laboratory, including more than 20 doctoral students and more than 400 graduate students, and 14 departments and more than 20 technical teams have been established.

Yang Jie also has a detailed understanding of the progress of R&D and production and the technical difficulties encountered in the entire laboratory and factory.

"The newly developed high-pressure gas tank can only achieve a high pressure of 40 megapascals, and such a 60-liter high-pressure tank can only store 1.5 kilograms of hydrogen. ”

In the workshop where the high-pressure tank was prepared, Victor explained to Yang Jie.

"The capacity of the high-pressure tank is still too small, and we still have to try our best to increase the pressure capacity to 70 megapascals, which can hold at least 2.5 kilograms of hydrogen, and the small car can only ensure that the mileage of a hydrogen refueling can reach 700 kilometers. ”

Yang Jie knew that the 70 megapascal high-pressure hydrogen tank developed by Toyota had reached the technical limit and was also the most advanced technology in the world, and in order to achieve this indicator, the structural materials of the high-pressure tank must all be redesigned, and the hydrogen refueling equipment must also be re-changed.

With such a high pressure, the temperature of the hydrogen entering the hydrogen tank will rise sharply when refueling, and if the hydrogen refueling equipment cannot control the amount of hydrogen filled through the temperature sensor in the hydrogen tank, then serious problems can easily occur, and the compressor of the hydrogen filling equipment must also be redesigned and produced.

At present, the circulating compressors that can be produced in China are mostly used for filling natural gas, and the filling pressure can only reach 20 megapascals, while the 40 megapascal circulating compressors used in the laboratory must be ordered from the American PDC company, and now only such a company can do it.

At this stage, the circulating compressors produced in Canada, Japan, and Germany can only reach 35 megapascals, while the PDC company in the United States is now developing a hydrogen compressor manufacturing technology with a two-layer metal diaphragm structure, which cannot be mass-produced at all, and it will take at least seven or eight years to reach 50 megapascals.

In the memory of the previous life, this company in the United States only mastered the three-layer metal diaphragm circulation compressor 10 years later, with an output pressure of more than 85MPa.

The factory here in the electrochemistry laboratory has purchased various equipment by itself, and prepared carbon fiber composite materials in small batches, and now the prepared high-pressure tank can only withstand a pressure of 50 megapascals.

"I will find a way to deal with the circulating compressor, but we can't stop the research and development of the filling machine because of this, our other technology research and development must be in the front, the hydrogen temperature in the filling machine can only be minus 20 degrees, and it must be reduced to minus 40 degrees, so as to shorten the hydrogen filling time and ensure that the two hydrogen tanks are filled within three minutes." ”

Hearing Yang Jie's constant requests, Victor was very happy, he was afraid that his boss would not make a request, and the more requests the boss made, the more funds the electrochemistry laboratory could get.

Yang Jie was also overjoyed to learn that the energy density of the fuel cell stack had reached the highest level at this stage, and now it was only stuck on the circulating compressor and high-pressure hydrogen storage tank when used in fuel cell vehicles.

According to the current technical level of the stack, it can already be used in fuel cell power stations.

"By the way, how is the development of stack boost converters for fuel cells?" asked Yang Jie.

"Yang Shao, now we are developing a 650V boost converter, the pressure converter is 4 phases, such a multi-phase design can reduce the current of each phase, so that the reactor volume in the converter is reduced, but also to meet the fuel cell can be as small as possible. Victor said.

"Since the energy density of the fuel cell stack has reached a very high level, in order to reduce costs, I will give priority to the use of fuel cells in power stations in the past few years, and prepare to build a 50 megawatt power station. ”

Yang Jie nodded and said.

Due to the decrease in the cost of catalysts and the increase in energy density, the fuel cell can generate 5,000 kilowatt-hours of electricity at the same cost according to the energy generation of one ton of coal in the current thermal power station.

If calculated according to a 50 megawatt power station, the construction investment of the thermal power station will be 250 million, according to the cost of 100 kilowatts of equipment built by the electrochemistry laboratory, the material cost of the stack alone is close to more than 20,000 US dollars, plus other equipment, the construction of such a power station alone equipment cost will be hundreds of millions, plus land and construction costs, the total investment has been estimated to be close to 400 million.

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