Morphology control of Lithium peroxide (cas 12031-80-0) using Pd3Co as an additive in aprotic Li-O2 batteries

Add time:07/27/2019    Source:sciencedirect.com

During discharge in aprotic Li-O2 batteries, Lithium peroxide (cas 12031-80-0) (Li2O2) can be formed by a surface- or solution-mediated route. In the surface-mediated process, a Li2O2 film is formed electrochemically on the cathode surface, leading to low capacity and rate capability. In contrast, in high donor or acceptor number electrolyte systems, Li2O2 toroids are formed by solution-mediated growth through a disproportionation reaction, resulting in high capacity and rate capability. However, during charging, high donor or acceptor number solvents cause poor rechargeability because of the high crystallinity of Li2O2 toroids and byproduct formation. Therefore, controlling the size of Li2O2 in a solution-mediated discharge process is the key to the development of Li-O2 batteries with high capacity and good rechargeability. We demonstrate the application of Pd3Co nanoparticles to enhance the rechargeability of a Li-O2 cell in a solution-mediated process. Scanning electron microscopy and X-ray diffraction studies indicate that the Li2O2 particles formed during discharge are small and the decomposition of the reaction products is reversible. A cell fabricated with Pd3Co nanoparticles exhibits a lower overpotential than the one without the nanoparticles. The additive may provide nucleation sites for Li2O2 particles, leading to enhanced rechargeability and appropriate capacity in a solution-mediated process for Li-O2 batteries.

We also recommend Trading Suppliers and Manufacturers of Lithium peroxide (cas 12031-80-0). Pls Click Website Link as below: cas 12031-80-0 suppliers

Prev:Improved performance of Co-doped Li2O cathodes for lithium-peroxide batteries using LiCoO2 as a dopant source
Next:An environmentally friendly method for recovery of lithium and cobalt from spent lithium-ion batteries using gluconic and lactic acids)