Analysis of lithium cobalt oxide batteries and lithium ion iron oxide batteries

Lithium cobalt oxide batteries and lithium ion iron oxide batteries According to foreign reports, recently, researchers from the argonne national laboratory (argonnenational laboratory, referred to as argonnenationalaboratory) cooperated with Northwestern University Walverton (natural) to develop iron oxide, lithium Rechargeable battery (li-ionironoxide, rechargeable lithium-iron-oxide battery). Compared with ordinary lithium cobalt oxide batteries (lithium cobalt oxide rechargeable batteries, lithium cobalt oxide batteries), its lithium ion movement is greater because of its large capacity, which extends the battery life of electric vehicles. Discuss the project supported by the Energy Frontier Research Center of the U.S. Department of Energy and publish its research results to Nature Energy, the top of the Wolferton postdoctoral research laboratory member ChunZhanZhenpengYao and the author of the discussion paper in the Argonne laboratory (firstauthors). Wolferton and Yao performed calculations, and Argonne’s laboratory served as the experimental part of the research. During charging and discharging, lithium ions move back and forth between the positive electrode and the negative electrode. When the battery is charged, lithium ions return to the anode and are stored there. The cathode is a composite composed of lithium ions, transition metals and oxygen. Generally speaking, the transition metal is cobalt. When lithium ions move back and forth from the positive electrode to the negative electrode, it can effectively store and release current. The capacitance of the cathode is limited by the number of electrons in the transition metal, which will participate in the chemical reaction in the battery. Lithium cobalt oxide batteries have been on the market for 20 years, but after a long discussion, researchers have discovered another cheaper and more powerful rechargeable battery. The Wolferton team first adopted two new strategies to improve the performance of ordinary lithium-cobalt batteries: replacing cobalt with iron, and forcing oxygen into a chemical reaction. The ability to store oxygen and release electricity will naturally increase the power of the battery, allowing it to store and use more lithium ions. Other research teams have done the same thing, but rarely succeed. Through numerical calculations, Wolferton and Yao discovered a new formula with a reversible chemical reaction. First, the team replaced cobalt with iron, which is the cheapest metal on the periodic table. Then, through calculations, they found the correct balance of lithium ions, iron ions, and oxygen ions so that they can simultaneously drive a reversible reaction without causing oxygen to escape. More importantly, the battery will start with four lithium ions instead of one, adding its capacity. Iron and oxygen will drive the battery to react, allowing four lithium ions to move back and forth between the positive and negative electrodes. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis on the operating principle of lithium batteries