According to foreign media reports, a team of Chinese scientists at the University of Maryland in the United States has recently developed a new type of lithium-ion battery based on water-based electrolyte. The battery not only meets the standards required for household electronic products such as notebook computers in terms of voltage, for the first time, but also At the same time, the risk of fire and explosion can be avoided.

　　According to foreign media reports, a team of Chinese scientists at the University of Maryland in the United States has recently developed a new type of lithium-ion battery based on water-based electrolyte. The battery not only meets the standards required for household electronic products such as notebook computers for the first time in terms of voltage, but also At the same time, the risk of fire and explosion can be avoided.

　　In existing electronic products, lithium-ion batteries all use non-aqueous electrolyte. The battery voltage of electronic equipment must meet the 4V standard when working, but under this voltage, water is easily electrolyzed. Therefore, organic solvents usually used in lithium batteries are used as electrolytes, but these electrolytes are flammable and flammable. Explosive, there is a great safety hazard.

　　It is understood that the research team once developed a water electrolyte battery in 2015, but because the maximum voltage is only 3V, and the electrode performance will be affected by the aqueous solution and decline. After redesigning the product, the research team worked with scientists such as Xu Kang from the US Army Research Laboratory to develop this upgraded version of the water-based lithium battery.

　　This time the researchers adopted a new type of polymer coating, which has special drainage properties. After coating it on the electrode, the water molecules cannot get close to the electrode surface. After the first charge, the gel decomposes into a stable interface, which separates the electrode from the electrolyte and prevents water molecules from decomposing under the working voltage. This technology not only improves the energy storage and charge-discharge performance of the battery, but also completely avoids the explosion hazard of organic solvent electrolyte.

　　Although the operating voltage of the new battery has reached the basic commercial level, compared with the current lithium-ion battery, there are still many areas that need to be improved. For example, the cost of zinc battery materials is relatively high, and the charge and discharge can only reach 50 to 100 times. However, it is undeniable that it has important reference significance for battery technologies such as sodium-ion batteries, lithium-sulfur batteries, zinc-magnesium multi-ion batteries, as well as electroplating and electrochemical synthesis.