Huang, Xianli; Zhuang, Dongmei; Chen, Zhihui; Gong, Hao; Wang, Tao; He, Jianping; Zhang, Xiaogang published their research in Journal of Electroanalytical Chemistry in 2021. The article was titled 《The investigation for electrodeposition behavior of lithium metal in a crown ether/propylene carbonate electrolyte》.Recommanded Product: 33100-27-5 The article contains the following contents:
It is so far an efficient way for depressing dendrite growth to adjust the electrolyte composition Therefore, the authors study the electrochem. behavior of Li metal electrodeposited in a LiPF6-propylene carbonate (PC) electrolyte by adding two kinds of crown ether. The effect of crown ether concentration on the Coulombic efficiency of Li electrodes has be evaluated, and the electrodeposition behavior of Li metal on neg. electrode has be analyzed by cyclic voltammetric curve, electrodeposition curve and Li metal deposition morphol. A certain amount of crown ether (15-crown-5 and 12-crown-4) can preferentially coordinate with Li ion in the electrolyte and form complex compounds, which reduce the Li ions concentration in the hot spot and level the Li electrode greatly by inhibiting the preferential growth of Li dendrite. A uniform and dense nano-columnar Li layer could be obtained at the c.d. of 2.0 mA cm-2 when the deposition amount is 1.0 mAh cm-2, and the concentration of 15-crown-5 and 12-crown-4 ether are 0.3M and 0.2M, resp. Gaussian calculation results show that the Li-crown complex has a relatively lower lowest unoccupied mol. orbit (LUMO), where electrons could be injected during the charging process, leading to decreased Coulombic efficiency. In the experiment, the researchers used many compounds, for example, 1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5Recommanded Product: 33100-27-5)
1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. Recommanded Product: 33100-27-5
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem