A few days later, Yang Jie was riding a warrior off-road vehicle driving on the winding mountain road, which was a road that had just been opened up not long ago, although it was very spacious, but there were potholes everywhere, and when driving all the way over, you could still see construction vehicles loaded with earth and rock, rolling up streams of sand and dust.

Yang Jie is going to a fuel cell power station built in the mountains northwest of Shanxi Province, where there is a huge coal mine, where the state has built a large coal-to-hydrogen plant and a large fuel cell power station, and the power of this fuel cell power station will be transmitted to the Beijing-Tianjin-Hebei region through the construction of the ultra-high voltage direct current transmission project.

Along the way, Yang Jie also saw those super large transmission towers standing between mountains and valleys, and he couldn't help but feel emotional.

Nanao Electric Power Group Co., Ltd., a joint venture between Huaxing Group and State Grid, participated in the first 525kV ultra-high voltage flexible DC transmission project in China, and Nanao Group provided core equipment such as converter valve towers and cables.

Yang Jie also attaches great importance to this, and heard that this power transmission project is about to be completed, so he rushed over.

After climbing over a large mountain, Yang saw a huge base next to a river valley deep in the mountain, and at this time, he could see bursts of white smoke coming from the base of the coal-to-hydrogen project.

The coal-to-hydrogen project, built by Shenhua Group, will produce 7 million tons of hydrogen per year, which will be used as hydrogen fuel for fuel cell power stations.

This super coal mine deep in the mountains was discovered ten years ago, with reserves of up to 10 billion tons, ranking fifth among several super coal mines in Huaxia, before Shendong Group has been mining here, three years ago the central government also decided to build a large-scale coal-to-hydrogen project and fuel cell project near this super coal mine, directly converting coal resources here into electricity and transporting it to the Beijing-Tianjin-Hebei region.

After several years of construction, the coal-to-hydrogen project and the fuel cell power station project have been completed successively, and the transmission project is about to usher in the process of unlocking several converter stations.

Yang Jie rushed to the 5,000 MW fuel cell power station built by Huayuan Group and North China Electric Power Group at noon, and then met with a group of management who rushed over.

It was also his first time at the base, and after a brief meeting, he conducted a field trip to the fuel cell power station.

This fuel cell power station is also the largest power station in China at this stage, with an investment of more than 8 billion, and this power station does not need so much investment, but Yang Jie asked to add a large-scale energy storage power station to the fuel cell power station, using supercapacitor capacitors, so the cost will follow.

However, if you want to build a thermal power station with the same installed capacity, the construction cost will reach 20 billion, the scale of the land will be several times larger, and the pollution will be serious, so the North China Electric Power Group Corporation will agree.

As a supercapacitor battery for energy storage power station, Aode Technology Co., Ltd. is the holding company of Tongji University, and the technology comes from the technology developed by the technical team led by Wan Zihao.

"Vice Principal Wan, I've heard that you've been running here no less than a dozen times in the past two years!" Yang Jie said with a smile.

"This is the first time that our Aode Technology Company has used supercapacitor batteries in such a large energy storage station, and the supercapacitor batteries use our newly developed electrode materials and separator materials, although we have done many tests, but I am still not at ease!"

Wan Zihao said.

Wan Zihao has personally led the technical team to develop supercapacitor batteries in recent years, and has previously provided various supercapacitor batteries and control chips to Huaxing Group Company, but at the beginning he purchased the separator materials used in supercapacitor batteries from Maxwell in the United States, and developed a new separator material with high temperature resistance and insulation two years ago, which made the capacity of supercapacitor batteries exceed the energy density of lithium batteries for the first time.

Although the formula of this material was found, it was difficult to prepare this film material into a film with a thickness of only a few microns, and finally it was Ruixing Technology Company, a subsidiary of Huaxing Group, that developed a set of chemical reactor for Aode Technology Company to achieve mass production.

The separator material prepared by the preparation method of sol and gel greatly reduces the resistance, the capacity of the capacitor is increased by 5 times, and the efficiency of charge and discharge is also improved a lot.

Yang Jie naturally asked how Wan Zihao found this material.

Wan Zihao said with a smile: "We still found an interesting modification method to increase the capacity of supercapacitors from a failed experiment in the synthesis of metal phosphide, and after many experiments, we finally stabilized the various properties of this material and passed our test." ”

To this end, Wang Zihao's team also published the research results in the top journal "Advanced Materials", which also caused quite a stir.

In fact, the electrochemistry laboratory of Huaxing Group and the laboratory of Tianma Technology Company have technical teams for the research and development of supercapacitor batteries, but the focus is different.

The electrochemistry laboratory is tackling the electrolyte materials of supercapacitors, because Yang Jie proposed to the R&D team that the battery should be used in wearable energy devices in the future, which requires the electrolyte to be stretchable and compressible and flexible, so the R&D team aimed at hydrogel.

Because the hydrogel has a hydrophilic polymer network structure, its volume can be easily adjusted based on the water content of the system, and has excellent tensile and compressive properties, and the water in the hydrogel system can dissolve ions, which is an ideal material for the preparation of high ionic conductivity soft electrolyte.

The R&D team of Tianma Technology Co., Ltd. worked hard to apply graphene to electrode materials after preparing graphene.

Previously, activated carbon was used for the electrodes of supercapacitors, but the low voltage in the basic building blocks of the capacitor limits the application of these supercapacitors, and in order to increase the voltage, a large number of cells must be stacked together to achieve the required voltage.

Tianma Technology Co., Ltd. obtained a continuous graphene mesoporous sponge three-dimensional framework composed of a continuous graphene mesoporous sponge through the chemical modification of graphene last year, and the researchers conducted various observations and tests through electron microscopy and X-ray diffraction and vibration spectroscopy technology, this material is very stable under high temperature and high voltage conditions, and has an energy density 2.7 times higher than that of traditional activated carbon materials, creating a world record for the voltage stability of carbon materials in symmetrical supercapacitors, and the new material has a higher unit voltage, which can reduce the number of stacks and make the device more compact.

At present, these materials have been tested on supercapacitor batteries, and can be used in supercapacitor batteries and other batteries in the second half of next year.

In recent years, Huaxing Group has used a large number of supercapacitor batteries in fuel cell power packs and fuel cell vehicles, which has also made Aode Technology the largest manufacturer of supercapacitor batteries in China and the most advanced technology company.

Although Huaxing Group has carried out various research and development in battery technology, it has no intention of entering this field itself, but has licensed various technologies to Aode Technology Company and several other companies for production.

Because of large-scale production, the cost of domestic supercapacitor batteries has also dropped significantly, and now the capacity of supercapacitors has exceeded that of lithium batteries, so Yang Jie naturally wants to apply these technologies to energy storage power stations.

Because of the characteristics of fast charging and discharging and extremely high service life, it is the best way to use it for energy storage power stations.

With the energy storage power station, the power supply network is more efficient and energy-saving, after all, not all times are the peak of electricity consumption, with the energy storage power station, the fuel cell power station usually does not need to work at full power at all, the electricity generated at night is used to store, and only the energy storage station is needed to meet most of the power demand during the day, and the power can be increased when the peak power consumption is encountered, which also greatly improves the stability and efficiency of the power, and is more energy-saving and efficient.