Lithium Manganese Dioxide Battery ( Li-MnO2)
Lithium Manganese Dioxide Battery ( Li-MnO2) : metal lithium is used as the anode and manganese dioxide used as the cathode. In the primary battery, the anode is the negative electrode, the electron flows from the negative electrode to the positive electrode, and the current flows from the positive electrode to the negative electrode. In the electrolytic cell, the anode is connected to the positive electrode, and the oxidation reaction occurs on the anode. The anion in the solution. Corresponds to the cathode.
The lithium-manganese dioxide battery negative electrode is metallic lithium, and the positive electrode active material is manganese dioxide. The electrolyte is an inorganic salt lithium perchlorate (LiClO4) dissolved in a mixed organic solvent of propylene carbonate (PC) and 1,2-dimethoxyethane (DME). The chemical expression is:
(-) Li/LiClO4—PC+DME/MnO2(+) Battery Negative Reaction: Li→Li++e Positive Reaction: MnO2+Li++e→MnO2(Li+) Total Reaction: Li+MnO2→MnO2(Li+)
The main performance of LiMnO2 battery
1. Energy density
Lithium-manganese dioxide batteries have voltages of up to 3V, which is twice of ordinary batteries. This means saving power and reducing weight.
2. Discharge performance
Even after a long period of discharge, it maintains a stable operating voltage, which greatly improves the reliability of the electrical appliance to the extent that it is maintenance-free (substantially no need to replace the battery).
3. Temperature characteristics
The application of high quality and good conductivity organic electrolyte solution enables the battery to work normally in the temperature range of -20 ° C ~ 60 ° C. After special process and formulation, it can also meet the working temperature requirement of -40 ~ 80 °C.
4. Leakproof performance
Reliable sealing structure and high-quality electro-hydraulic and positive and negative active materials make the battery have good leak-proof performance.
5. Working characteristics
Due to the action of organic matter and lithium, a protective film layer is formed on the surface of the lithium negative electrode, which is the fundamental reason why the lithium battery can maintain its performance for a long time, together with a precise and reliable battery sealing structure and high stability activity. The use of the substance allows the annual capacity drop rate of the self-discharge of the battery to be controlled below 2%.
Battery application
Lithium manganese button cells are widely used in computer motherboards, mobile communications, C-MOS, S-RAM and electronic memory systems. As a supporting power source, it is used in watches, cameras, telephones, rice cookers, calculators, card punchers, electronic notebooks, blood glucose testers, ear thermometers, remote controls, electronic flash products, electronic flashing shoe lights and other daily electronic products.
