New Chemical Materials: Helping the Innovation and Development of the Energy Industry

New Chemical Materials: Helping the Innovation and Development of the Energy Industry

New Chemical Materials: Helping the Innovation and Development of the Energy Industry Under my country's "dual carbon" strategy, the rapid development of the new energy industry has put forward higher requirements for the performance of related materials. In recent years, my country's chemical new material industry has continued to innovate and develop, helping the new energy industry to achieve leapfrog development. At the 2022 World Clean Energy Equipment Conference held recently in Deyang, Sichuan, the participating experts reached the above consensus.

Silicon Wafer Technology: Helping the Rapid Development of the Photovoltaic Industry Qu Xianming, member of the National Manufacturing Power Construction Strategy Advisory Committee and director of the China Engineering Strategy Consulting Center and Manufacturing Research Office, said that the change of lanes of silicon wafer technology has made my country's photovoltaic industry the world's largest, the most complete industrial system, and the competition of the whole industry chain. Advantages of strategic new industries contributed strength.

"Globally, my country's photovoltaic power generation equipment is already in a dominant position." Qu Xianming said. In 2021, my country's polysilicon production will account for more than 70% of the global production, silicon wafer production will account for 96% of the global production, cell production will account for 93% of the global production, and battery module production will account for 91% of the global production. Not only that, my country ranks first in the world in the number of patent applications in the field of photovoltaics, and the number of commercialized Photoelectric conversion efficiency and laboratory conversion efficiency are also at a high level.

Qu found that innovation in technology and manufacturing equipment is the key to achieving the above-mentioned achievements. Taking LONGi Green Energy as an example, as a leading enterprise of photovoltaic power generation equipment in my country, the company has abandoned the polysilicon technology route used in the past at home and abroad, and has chosen a new route for single-product silicon wafer technology with high photoelectric conversion efficiency. LONGi Energy has produced monocrystalline silicon wafers for more than 10 years.

Through research and research on production methods, the price of silicon wafers will be reduced from 200 yuan per piece in 2006 to 3 yuan per piece in 2020, and the cost of photovoltaic power generation will also be reduced to 0.1 yuan per kilowatt-hour, which is lower than the cost of coal power.

Storage material technology: ensuring the buildability of storage and transportation equipment "How can the reliable manufacturing technology of storage and transportation equipment be a problem that must be solved in industrial development." Ji Xuedong, an academician of the Chinese Academy of Engineering and chief engineer of China National Machinery Industry Corporation, said that breakthroughs in the key core technologies of gas energy storage and transportation equipment to ensure Equipment safety and river-running operation are urgent needs to consolidate the development technology of the energy industry.

It is understood that the current hydrogen storage methods are divided into gaseous hydrogen storage, liquid hydrogen storage, and solid gas storage. Gas storage scenarios include storage scenarios such as gas stations, transport vehicles, and fuel cell vehicles. Chen Xuedong mentioned that in the field of gaseous hydrogen storage, hydrogen storage cylinders are used as containers for carrying gas, and their structure and materials must ensure the safety of gas energy storage and transportation equipment.

Chen Xuedong said, specifically, in the field of high-pressure gas use in vehicles, the combination of gas storage cylinders and bottle mouths is a key problem.

"Our country is developing a V-shaped plastic liner fiber-wound bottle and a bottle mouth combination valve. At present, a prototype has been developed and various performance tests are underway. However, the gas storage bottle still has a composite resin matrix in the liner combined with carbon fiber. loose, fibrous cracks, leaking bottle seals, etc. The key to solving the problem of the plastic liner of the New Year's bottle is the material. At present, the material used in our country is nylon 66 or ultra-high density polyethylene. These two materials have their own advantages and disadvantages, and they need to be modified. At present, Beijing University of Chemical Technology is conducting research on this problem. "Chen Xuedong said.

Composite new materials: making wind power equipment more efficient The development of clean energy equipment industries such as wind power is also inseparable from new chemical materials.

Wu Jinjun, director of the Science and Technology Development Department of China Machinery Research Institute Group Co., Ltd., said that clean energy equipment is a typical major technical equipment, and there are many conditions such as ultra-high or ultra-low temperature, and the requirements for the extreme performance of components and equipment reliability are increasing.

For example, Wu Jinjun said that in terms of wind power, blades, as the most important core component of wind power, are the input end of the wind turbine and the source of energy. Whether a larger-capacity, higher-efficiency unit can be manufactured depends on the material properties of the blades, and carbon fiber materials are the key to solving this problem.