Jongjung Kim

Title: Jongjung Kim and Lithium-Ion Battery Innovation.

Introduction

Jongjung Kim is an inventor based in Warwick, Rhode Island, whose work focuses on improving lithium-ion battery performance. His research examines how electrolyte additives can help protect battery electrodes and support better cycling and rate performance.

Latest Patents

Kim is associated with 1 patent, titled “Lithium bis(trimethylsilyl) phosphate as a novel bi-functional additive for lithium ion batteries.” The work investigates lithium bis(trimethylsilyl) phosphate (LiTMSP) as a bifunctional additive, particularly in lithium nickel manganese oxide (LNMO)/graphite cells.

The research reports that adding LiTMSP significantly improves cycle performance. Its trimethylsilyl group can react with hydrofluoric acid formed when residual water hydrolyzes LiPF₆, helping reduce metal-ion dissolution from the electrode. LiTMSP also forms a protective surface film on the graphite electrode, which can suppress electrolyte decomposition and damage associated with migrated metal ions. The film is described as supporting lithium-ion conductivity and reducing electrode resistance, contributing to improved rate performance and reduced cell polarization.

Career Highlights

Kim’s listed affiliations include the University of Rhode Island and Gotion, Inc. His work on LiTMSP highlights an approach to battery improvement that combines acid scavenging with protective film formation.

Collaborations

Kim’s listed coworker is Venkata Ak Adiraju. Their collaboration is associated with research into electrolyte additives and electrode protection for lithium-ion batteries.

Conclusion

Jongjung Kim’s patent work explores how LiTMSP can improve lithium-ion battery cycling by reducing harmful reactions and forming a protective graphite-electrode film.