In 2019,Journal of Physical Chemistry C included an article by Yang, Yi-Fei; Chiou, Chun-Yu; Liu, Chuan-Wen; Chen, Cheng-Lung; Lee, Jyh-Tsung. Category: ethers-buliding-blocks. The article was titled 《Crown Ethers as Electrolyte Additives To Modulate the Electrochemical Potential of Lithium Organic Batteries》. The information in the text is summarized as follows:
Organic batteries have attracted much attention because of their flexibility, high-power densities, and highly designable structures of electrode-active materials. The electrochem. potential of the batteries can be modulated using different organic redox species or by structural modification of the redox unit centers. In this study, the electrochem. potential of lithium organic radical batteries is modulated, without the structural modification of the redox unit centers. Two different crown ethers, 12-crown-4 (12C4) and 15-crown-5 (15C5), served as electrolyte additives to increase the electrochem. potential of the batteries. An average discharge voltage can be increased to 3.90 V through the electrolyte system using various concentrations of the electrolyte salt and crown ethers. The addition of 1 equiv of 12C4 to the Li|0.25 M LiClO4-ethylene carbonate/diethyl carbonate (= 1/1, volume/volume|poly(2,2,6,6-tetramethylpiperidin-1-oxy-4-yl methacrylate) cells significantly improved the capacity retention up to 21% after 300 cycles at a current rate of 3C. Furthermore, the structures and system energies of the lithium-crown ether complexes are investigated using d. functional theory calculations1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5Category: ethers-buliding-blocks) was used in this study.
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. Category: ethers-buliding-blocks
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem