Diaphragm materials are more common in our lives, such as explosion-proof film on automobile glass, protective film on mobile phone panels, etc. What many people don't know is that there is also a diaphragm in the battery of our mobile phone, which is used to prevent the battery from short circuit and transmit ions at the same time. After years of research, researchers at the University of Science and Technology of China have designed a new type of ion-conducting membrane. This ionic membrane is expected to be widely used in energy conversion, large-scale energy storage, and distributed power generation. The research results were published in the international academic journal Nature on the evening of April 26, Beijing time.
The ionic membrane is a key component of electrochemical devices or equipment such as flow batteries and fuel cells. After absorbing water, problems such as swelling deformation and loose structure are prone to occur, especially after long-term use, structural aging and performance degradation may occur. This new type of ionic membrane developed by researchers at the University of Science and Technology of China solves the problem of incompatibility between the conductivity and selectivity of ions in materials. The ion transmission is faster and achieves approximately frictionless conduction in the membrane. The current density of the flow battery can reach 500 mA per square centimeter, which is stronger than the traditional ion membrane, not easy to age, and will not swell due to water absorption.
It is understood that for many years, the efficient storage and utilization of new energy sources such as solar energy and wind energy has been an important research and development topic for Chinese researchers. The advent of this kind of domestic ionic membrane will break the technological monopoly of similar foreign products for many years, greatly improve the efficiency of energy storage equipment such as flow batteries, and is expected to be widely used in the field of energy storage of new energy such as solar energy and wind energy in my country. At present, researchers are stepping up the mass production of this type of ion membrane.
Xu Tongwen, a professor at the University of Science and Technology of China: We can combine this new type of flow battery energy storage technology with the grid for regular household electricity consumption and industrial production. We can store the electricity generated by solar energy and solar panels, and build a power station, which can also charge cars. In this way, energy saving and environmental protection can be achieved, and the goal of "double carbon" can be realized.
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