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Non-Aqueous Electrolyte Additives for a Novel Na-ion Cathode Material

Description
Due to the natural abundance of sodium in the Earth’s crust and its low specific cost, new research has shown that Sodium Ion Batteries (SIBs) are an increasingly viable solution for sustainable energy storage. SIBs have the potential to be a more cost-effective alternative to Li-Ion batteries. However, there are…

Due to the natural abundance of sodium in the Earth’s crust and its low specific cost, new research has shown that Sodium Ion Batteries (SIBs) are an increasingly viable solution for sustainable energy storage. SIBs have the potential to be a more cost-effective alternative to Li-Ion batteries. However, there are several performance issues that hinder their charge capacity and capacity retention, largely attributed to electrode-electrolyte side reactions. In order to be effectively commercialized, these issues must be investigated, understood, and improved upon. It has been observed that the electrode-electrolyte interface (EEI) has a large impact on the overall cell performance in SIBs. While EEI layers are still trying to be fully understood, there is evidence that suggests electrolyte additives may assist the formation of synergistic EEI layers that can improve these major capacity issues in SIBs. Here, the use of three electrolyte additives (FEC, TMSB, and VC) with the MuNC cathode material is reported. From electrochemical cycling data, it was found that these additives greatly extend the lifetime of the MuNC cathode material. Further analysis is performed to understand the effectiveness of electrolyte additives as a solution to stability issues in Na-ion batteries.
ContributorsJacobs, Matthew (Author) / Mu, Linqin (Thesis director) / Chan, Candace (Committee member) / Barrett, The Honors College (Contributor) / Materials Science and Engineering Program (Contributor)
Created2025-05