Research

Our primary research areas include NIB (Sodium-ion Batteries), LIB (Lithium-ion Batteries), and solid-state batteries. Our group is dedicated to exploring next-generation energy storage technologies to enhance the capacity, safety, and sustainability of current energy storage systems. 

NIB (Sodium-ion Batteries)

Thesis : Electrodeposited Na2Ni[Fe(CN)6] Thin-Film Cathodes Exposed to Simulated Aqueous Na-Ion Battery Conditions, Philipp Marzak,Jeongsik Yun,Albrecht Dorse,lArmin Kriele,Ralph Gilles, Oliver Schneider,Aliaksandr S. Bandarenka*

https://pubs.acs.org/doi/10.1021/acs.jpcc.8b00395

Our research focuses on sodium-ion batteries (NIBs), highlighting sodium's unique advantages as a key material for energy storage. Sodium is abundant, cost-effective, and widely available, unlike lithium, which faces supply limitations. While sodium-ion batteries operate on principles similar to lithium-ion batteries, sodium's larger ionic radius and different electrochemical properties require specialized material design.

Our work aims to overcome these challenges by developing advanced electrode and electrolyte materials to enhance energy density, cycle life, and safety. With its sustainability and scalability, sodium-ion technology holds great potential for large-scale applications, such as renewable energy storage, paving the way for a more sustainable energy future.

LIB (Lithium-ion Batteries)

Thesis : Recent Advances and Prospects of Atomic Substitution on Layered Positive Materials for Lithium-Ion Battery, Pilgun Oh, Jeongsik Yun, Seohyeon Park, Gyutae Nam, Meilin Liu, Jaephil Cho 

URL : https://onlinelibrary.wiley.com/doi/full/10.1002/aenm.202003197

Our research focuses on lithium-ion batteries (LIBs), which have revolutionized energy storage and remain the leading technology for a wide range of applications. Lithium-ion batteries are renowned for their high energy density, long cycle life, and lightweight design, making them an ideal choice for portable electronics, electric vehicles, and renewable energy systems. These characteristics stem from lithium's unique properties, such as its small atomic size, low weight, and high electrochemical potential, which allow for efficient energy storage and delivery.

Despite their widespread success, there is still room to improve lithium-ion batteries in areas such as energy capacity, charging speed, and safety. Our research group is dedicated to advancing LIB technology by developing innovative electrode and electrolyte materials, optimizing battery performance, and addressing challenges such as thermal stability and resource sustainability. By enhancing these aspects, we aim to support the continued growth of lithium-ion batteries in powering next-generation technologies and meeting the increasing demand for reliable and efficient energy storage solutions.

ASSBs (All-Solid-State Battery)

Development of High-Energy Anodes for All-Solid-State Lithium Batteries Based on Sulfide Electrolyte, Prof.Pilgun Oh, Dr. Jeongsik Yun, Dr. Jae Hong Choi, Kashif Saleem Saqib, Tom James Embleton, Seohyeon Park, Chaewon Lee, Jahanzaib Ali, Kyungmok Ko, Prof. Jaephil Cho

URL : https://onlinelibrary.wiley.com/doi/full/10.1002/anie.202201249

Our research focuses on solid-state batteries, a promising next-generation energy storage technology that addresses the limitations of traditional liquid electrolyte-based systems. Solid-state batteries replace the flammable liquid electrolytes found in conventional lithium-ion batteries with solid electrolytes, significantly enhancing safety by reducing the risk of thermal runaway and fire. This advancement is particularly crucial as battery systems are scaled for use in electric vehicles and grid-level energy storage.

Beyond safety, solid-state batteries offer higher energy density due to their ability to utilize high-capacity electrode materials, such as lithium metal anodes. This allows for longer battery life and extended range in applications like electric vehicles. Additionally, solid electrolytes enable greater stability and durability, resulting in improved cycle life and performance under extreme conditions.

By researching advanced solid electrolyte materials and their interfaces with electrodes, our group aims to address challenges such as ionic conductivity and compatibility. Through our work, we seek to unlock the full potential of solid-state batteries, paving the way for safer, more efficient, and sustainable energy storage solutions for the future.