Academician Zhao Tianshou: Fluid batteries are one of the effective ways to achieve the use of new energy scale

Zhao Tianshou, an academician of the Chinese Academy of Sciences, the first batch of experts and members of the review committee of China Science and Technology Think Tank, a member of the review committee, an expert in engineering thermal physics and energy science, and the dean of the Energy Research Institute of the University of Science and Technology of Hong Kong.

Zhao Tianshou has long been committed to research on theory and battery energy storage technology of hot quality. The coupling theory of thermal transmission and electrochemical energy conversion in the battery energy storage system was established, and a new method for storage of power storage of liquid energy carrier with charging and discharge can be proposed. Air pollution and climate change issues will play an important role.

Put forward the concept of electrical fuel storage (E-Fuel)

At present, the electricity and instability produced by solar energy and wind energy used in my country have caused a lot of resources and losses of funds. To this end, Zhao Tianshou proposed the concept of electrical fuel storage (E-Fuel), which is a liquid energy carrier that can store electricity energy storage systems with recycling and discharge liquid as a medium. To put it simply, the charged power -loading liquid is directly irrigated into the power battery. The system does not have precious metal element catalysts, which can greatly reduce investment costs. And there is no regional restrictions in the charging device. The light and wind on the earth into electrical fuel at any time, anytime, anywhere, and provide new energy power efficiently, and because it is a liquid to transport different places.

Zhao Tianshou pointed out that battery energy storage, especially fluid batteries (fuel cells, liquid flow batteries, metal air batteries), is one of the effective ways to achieve the use of new energy. He said, "As early as 2016, I began to conceive a fuel cell that allowed the liquid to charge. Take metal ionic fuel as an example. Before charging, it was a high -priced state. It has realized the charging of electrical fuel. The entire energy conversion process is a transformation process of "electricity to electricity", and there is a very efficient energy conversion system. "He said that compared with other renewable energy energy storage technology, fluid battery, fluid battery Energy storage technology is more promising, and its biggest advantage is that it can meet the large requirements of the scale, high efficiency, low cost, durability, and safety of new energy.

Zhao Tianshou said, "The energy storage cycle of the system is higher than 80%, the single calculation is charged, and the efficiency can reach more than 90%. During the discharge process, it also reaches high power density. Fast, renewable energy can be fully charged into the fuel efficiently and quickly, and then flexibly and conveniently transported and used. "If the energy storage of electric fuel can be combined with clean energy such as wind, light, and water And environmental pollution and other issues. Not only that, the capacity of the energy storage system of the electrical fuel is not limited, which is determined by the volume of the electrical fuel. Electric fuel charging stations can continuously convert renewable energy into electrical fuel, and electrical fuel cells can provide users with clean power supply anytime, anywhere, anytime, anywhere.

At present, Zhao Tianshou led the team to develop electric fuel energy storage systems in the aspects of automotive power and large fixed energy storage facilities. For vehicle power power supply, focus on the energy density and power density of the focus, so that the volume of the electrical fuel cells as much as possible, so that the electrical fuel can be driving longer; in terms of fixed energy storage, the team has tested the kilowatt -level energy storage energy storage facility.

Discover the new type of graphite, solve the problem of "stuck neck"

The development of green economy, promoting low -carbon transformation of energy structure, and reducing greenhouse gas emissions have become the consensus of the world. Zhao Tianshou believes that in addition to the development of green development, in addition to the development of a single technology, it is necessary to promote coordination and integration and development between technology, so that they can form an organic system and then realize the systemic adjustment of the energy structure. He said that at present, the uncoordinated and non -matching between my country's technology has limited the promotion and application of technology. The intersection and integration between technology can improve the competitiveness of new technologies and accelerate the transformation and application of technology.

Zhao Tianshou said that achieving carbon neutrality is an important goal of green development. The most important thing is to achieve the large -scale replacement of solar and wind energy on fossil energy. He said that carbon dioxide emissions in my country strive to reach the carbon peak by 2030. To solve this problem, the proportion of solar and wind energy is more than 60%, but we currently have only 5%of the proportion. Therefore, studying clean and efficient energy is one of the important innovation directions in the future.

Direct methanol fuel cells are considered one of the most promising clean and high -efficiency energy batteries. Among them, proton exchange membranes are core components that affect the energy efficiency and power density of direct methanol fuel cells. Zhao Tianshou said that the performance of proton exchange membranes is a "stuck neck" problem now facing. At present, the proton exchange membrane for fuel cells is mainly the NaFion film produced by DuPont. The biggest problem is that the methanol penetration rate is high. This will cause a waste of methanol fuel and reduce energy utilization efficiency. If negative reactions occur, catalyst poisoning will also be caused, which greatly reduces battery performance and shortens the battery life.

In 2019, Zhao Tianshou led the team to discover the new type of two -dimensional carbon nanomaterial graphite. This is an ideal proton exchange membrane material with high selectivity and high -conductivity, which can effectively block the penetration of methanol fuel. Through the simulation of the atomic scale, Zhao Tianshou analyzed the penetration of the proton and methanol molecules at the interface of the graphite, and found that when the graphite pore diameter was greater than 1.2 nanometer, the graphite and water formed a water phase-vacuum phase interface interface , Water phase allows the proton to quickly conduct, and the vacuum phase can effectively block the penetration of methanol molecules. This provides new possibilities for the design of the zero -osmotic proton selection film. Zhao Tianshou said that in the future, we will continue to explore other proton exchange membrane materials, carry out feasible research, and solve practical problems. (Text/Wang Huilan) Academician Zhao Tianshou and the research team are together

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Introduction to Academician Zhao Tianshou

Zhao Tianshou, an academician of the Chinese Academy of Sciences, the first batch of experts and members of the review committee of China Science and Technology Think Tank, a member of the review committee, an expert in engineering thermal physics and energy science, and the dean of the Energy Research Institute of the University of Science and Technology of Hong Kong.

Research on the theory and battery energy storage technology for the long -term dedication to the theory and battery energy storage technology. In response to the major needs of the country's use of renewable energy, around the energy transmission and conversion key scientific issues around the energy transmission and conversion of fuel cells, liquid flow batteries, metal air and other fluid battery storage devices, the thermal transmission and electrochemical energy in the battery energy storage system have been established. The coupling theory of conversion proposes the coordinated transmission method of heat, quality, electronics, and ions, and breaks through the key technologies of high -power fluid battery design. A new method of storage of power storage with liquid energy carrier with recharging discharge, invented a new type of energy storage system that is independent of the charging and discharge device, and achieved the same level of system efficiency and output power. The realization of the scale of renewable energy and solving the problem of air pollution and climate change will play an important role.

He has won the Croucher Senior Research Achievement Award, the He Liang Heli Fund Science and Technology Progress Award, the National Natural Science Award, and the outstanding research achievement award of the Hong Kong Science and Technology University of Science and Technology. Published 383 SCI papers, SCI quoted more than 19,000 times, and was selected as a global highly cited scientist and the most influential scientific ideological list for 6 consecutive years. Published 5 English monographs and 9 Chinese and English monographs.

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