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release time:2024-07-19 Hits: Popular:AG11 battery
LR44 battery achieves technological breakthrough
According to foreign media reports, Professor Linda Nazar of the University of Canada announced that her research team has achieved four-electron conversion for the first time, which will double the electron storage capacity of lithium-oxygen (Li-O2) batteries.
Nazar's team converted organic electrolytes into inorganic molten salts of lithium nitrate/potassium nitrate to improve their chemical stability and conductivity. In addition, the team replaced the porous carbon cathode with a bifunctional metal oxide catalyst, which increased the battery capacity while reducing the overpotential.
Compared with Li2O2, at 150 degrees Celsius, the battery will generate more stable Li2O during use, and its thermodynamic performance is better. This battery cell uses a variety of materials to improve its thermodynamic performance and reaction kinetics. The battery developed by the researchers has better charging performance and theoretically has a 50% improvement in energy storage performance.
In the field of battery research, lithium-oxygen batteries are attractive, mainly due to their theoretical energy density. Energy density is the energy storage capacity of a material, and when the battery cell undergoes an electrochemical reaction, its energy will be stored in the battery cell.
Earlier, the technical challenges of lithium-oxygen batteries focused on the battery's cathode, organic electrolyte, superoxide and lithium peroxide. However, this study has solved all the intrinsic limitations and proved the possibility of four-electron transmission in this type of battery, the reversibility of the reaction, and its theoretical coulombic efficiency is close to 100%.
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