In lithium metal battery with transition metal cathode, they use lipf6 salt and different electrolyte. However, in lithium sulfur batteries, almost studies were conducted under dol dme electrolyte with litfsi. I want to know why that.
Carbonates undergo a nucleophilic reaction with the sulfur leading to precipitation and loss if active material. Therefore they use most commonly ethers like dol and dme. Since lipf6 is not soluble in these solvents a good alternative is litfsi
Carbonates undergo a nucleophilic reaction with the sulfur leading to precipitation and loss if active material. Therefore they use most commonly ethers like dol and dme. Since lipf6 is not soluble in these solvents a good alternative is litfsi
DME / DOL and others are stable with lithium metal as well as lithium polysulfides. Hence they're used in Li-S batteries
Dr. Sandra Hansen , can you please explain more this nucleophilic reaction? or maybe recommend a paper that treats this issue. Thanking you.
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