Publicly listed companies for photovoltaic water electrolysis hydrogen production include LONGi, Sungrow, Baofeng Energy, etc.
Recently, the news that LONGi, a leading company in the photovoltaic industry, entered the field of hydrogen energy has exploded. the capital market. Concerning Discussions on the production of photovoltaic hydrogen are also increasingly active. In fact, over the past two years, many companies have been very optimistic and actively involved in this emerging field.
1. Longi shares. LONGi began to pay attention to and deploy electrolytic hydrogen production from renewable energy sources as early as 2018. In the past three years, it has carried out in-depth research and development cooperation with research institutes. Well-known domestic and foreign scientific research and experts faestablishing authority in the field. the fields of electrolysis hydrogen production equipment, photovoltaic hydrogen production and other fields have been formed. At the end of March 2021, LONGi Corporation, through its wholly-owned subsidiary LONGi Green Energy Venture Capital, and Shanghai Zhuque Investment jointly established Xi'an LONGi Hydrogen Energy Technology Co., Ltd. to achieve the industrialization of hydrogen energy.
2. Sungrow, a leader in inverters, is one of the first listed photovoltaic companies in China to conduct research on photovoltaic hydrogen production. The company said it has established a dedicated hydrogen energy division and carried out in-depth cooperation with the Dalian Institute of Chemical Physics of the Chinese Academy of Sciences in advanced PEM electrolytic hydrogen production technology, the integration of renewable energies and electrolytic production ofhydrogen, and Optimization of the hydrogen production system. In terms of specific photovoltaic hydrogen production projects: in July 2019, Sungrow signed a comprehensive 300MW and 50MW photovoltaic hydrogen production demonstration project in Yushe County, Jinzhong, Shanxi Province; in September 2019, a 200 MW photovoltaic power generation project in Tunliu district, Shanxi province; (The first phase) Start-up and signing ceremony of the second phase of the 500 MW photovoltaic hydrogen production project.
3. Baofeng Energy. As early as 2019, Baofeng Energy, a leader in new high-end coal-based materials, began to launch a hydrogen production project. In April 2020, the company's "Solar Electrolysis of Water Hydrogen Production, Energy Storage and Comprehensive Application Demonstration Project" began construction at the base in Ningdong, China. Neitherngxia. The project will involve solar water electrolysis for hydrogen production, hydrogen storage and transport, hydrogenation stations, hydrogen energy transport demonstration applications and coupling with the modern coal chemical industry to produce new high-end chemical materials. The project represents a total investment of 1.4 billion yuan, with a total annual output of 160 million standard cubic meters of hydrogen per year and a by-product of 80 million standard cubic meters of oxygen per year. It is expected to achieve an annual revenue of 600 million yuan, reduce coal resource consumption by 254,000 tons, and reduce carbon dioxide emissions by about 445,000 tons per year. The current phase of the project is underway. This is Ningxia's first industrial hydrogen energy project and the largest integrated hydrogen production and storage project.renewable energy drogen in China.
4. Jinko Technology. In 2019, Jinko Technology said: “By 2025, great progress in “photovoltaic + energy storage” hydrogen production system technology will make large-scale application economically feasible. To this end, the company has made arrangements both domestically and abroad: overseas, it signed a strategic cooperation agreement with Air Products in 2020, and the two parties will cooperate in the field of new photovoltaic energies, combining "hydrogen production" with "green electricity"; at the national level, the company strives to promote the implementation of hydrogen production projects based on renewable energy.
What are the listed companies for photovoltaic hydrogen production
Typical photoelectrochemical decomposition solar poolIt consists of a photoanode and a cathode The photoa.node is generally an optical semiconductor material that can generate electron-hole pairs when excited by light. The photoanode and the counter electrode (cathode) form a photoelectrochemical cell, the electrons generated on the semiconductor strip after the photoanode. absorbs the light flux to the cathode via an external circuit, the hydrogen ions present in the water accept the electrons from the cathode to produce hydrogen gas. The semiconductor photoanode is the most critical factor affecting the efficiency of hydrogen production. The optical absorption boundary of the semiconductor should be shifted to the visible light part as much as possible, thereby reducing the recombination between photogenerated carriers and improving the carrier lifetime. The most studied photoanode material is TiO2. As a photoanode, TiO2 resists mild corrosion and exhibits good chemical stability. And he has a greatnd bandgap and can only absorb photons whose wavelengths are less than 387 nm. Currently, the main solution lies in doping and surface modification. Doping includes non-metal ion doping, metal ion doping, rare earth element doping, etc. For the water splitting reaction to occur, at least 1.23 V of energy is required. The most commonly used electrode material is now TiO2, with a bandgap of 3 eV. When used as an anode of a solar photoelectrochemical hydrogen production system. produces a voltage of 0.7~0.9V, so a certain bias voltage must be applied to split the water. Since bias voltage application methods commonly used in solar hydrogen production include: using solar cells to apply an external bias voltagerne and the use of solar cells to apply bias voltage internally, the photoelectrochemical splitting of solar water to produce hydrogen can be divided into a one-step method and two: step method. The one-step method does not draw electrical energy out of the solar cell, but prepares catalytic electrodes on the two electrode plates of the solar cell and directly decomposes water into hydrogen and oxygen through voltage drop generated by the solar cell. This method has gradually attracted attention due to the progress made in recent years in the research of multi-junction stacked solar cells (such as three-junction stacked amorphous silicon solar cells). Since the open circuit voltage of laminated solar cells can exceed the voltage required to electrolyze water and the electrolyte can be transparent, when a ceThe solar cell with such high open circuit voltage is placed in the electrolyte, the reaction of water electrolysis will proceed spontaneously under light. The advantage of this method is that it eliminates the need for external circuits and reduces energy loss. However, the problem of photochemical corrosion of photoelectrodes is very important. Therefore, research focuses on adapting the energy gap between cells, anti-cell selection. corrosion layers on the cell surface and preparation of device structures. The design of the catalytic electrode requires low overpotential, good desorption, transparency to visible light, anti-corrosion and low cost. Two-step photovoltaic water electrolysis involves performing solar photoelectric conversion and electrochemical conversion in two independent processes. In this way, several solar cells can bet be connected in series to meet the voltage conditions required for water electrolysis. The two-step hydrogen production process has the following advantages: solar cells with high conversion efficiency and better electrochemical electrode materials can be selected in the system to improve the photoelectrochemical conversion efficiency; photochemical corrosion problems caused by the use of semiconductor electrodes can be effectively avoided. However, the two-step method requires current to be drawn from the battery, which consumes a lot of electrical energy, because electrolysis of water only requires a low voltage, and obtaining energy High-power electrics require large current, resulting in large consumable cables. and power losses, and when the current density is very high, the electrodes are alsoenlarged.overpotential.
1. LONGi
2. Sungrow
3. Baofeng Energy
4.
5. Datang Group
6. Yili Clean Energy
7. Hydrogen production systems using solar energy include photolysis hydrogen production, solar energy production and hydrogen production from water. Solar hydrogen production has grown over the past 30 to 40 years. Research on solar hydrogen production mainly focuses on the following technologies: thermochemical hydrogen production, photoelectrochemical decomposition, photocatalysis, artificial photosynthesis and biological hydrogen production.
8. Among hydrogen production methods, hydrogen production from fossil fuels accounts for more than 90% of global hydrogen production. Hydrogen production from fossil fuels primarily uses a combination of steam reformingfear and pressure swing adsorption to produce high purity hydrogen. The production of hydrogen by electrolysis of water with electric energy also accounts for a certain proportion. Solar hydrogen production has grown over the past 30 to 40 years. Research on solar hydrogen production mainly focuses on the following technologies: thermochemical hydrogen production, photoelectrochemical decomposition, photocatalysis, artificial photosynthesis and biological hydrogen production.
1. In 2018, LONGi began to take an interest in and deploy the production of hydrogen by electrolysis from renewable energies. Over the past three years, LONGi has carried out in-depth R&D cooperation with renowned scientific research institutes and authoritative experts at home and abroad, and has accumulated technologies in the fields of hydrogen production equipment through electrolysis and photovoltaic hydrogen production. At the end of March 2021, LONGi Green Energy Venture Capital, a wholly-owned subsidiary, and Shanghai Zhuque Investment jointly established Xi'an LONGi Hydrogen Energy Technology Co., Ltd. to achieve the industrialization of hydrogen energy.
2. Solar Energy, a leader in inverters, is one of the first listed photovoltaic companies in China to conduct research on photovoltaic hydrogen production. The company said it has established a dedicated hydrogen energy division and carried out in-depth cooperation with the Dalian Institute of Chemical Physics of the Chinese Academy of Sciences in advanced PEM electrolytic hydrogen production technology, the integration of renewable energies and the electrolytic production of hydrogen. and optimization of hydrogen energy. Production systems, etc.
3. Since 2019, Baofeng Energy, a leading company in new materials haut of the coal-based range, launched a hydrogen production project. In April 2020, the company's "Solar Electrolysis of Water Hydrogen Production, Energy Storage and Comprehensive Application Demonstration Project" began construction at the Ningdong base in Ningxia. The project will involve solar water electrolysis for hydrogen production, hydrogen storage and transport, hydrogenation stations, hydrogen energy transport demonstration applications and coupling with the modern coal chemical industry to produce new high-end chemical materials.
4. In 2019, Jinko Technology said: “By 2025, the huge progress in “photovoltaic + energy storage” hydrogen production system technology will make large-scale application economically feasible. » To this end, the national and foreign establishment of the company:abroad, the company signed a strategic cooperation agreement in 2020 with Air Products. The two parties will cooperate in the field of new photovoltaic energy and combine “hydrogen production” and “green electricity”. "; In China, the company focuses on promoting the implementation of renewable energy-based hydrogen production projects.
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