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Motivation & Goals
Developing Next Generation Batteries
Li-ion batteries (LIBs) have revolutionized human life by enabling the use of mobile electronic devices such as mobile phones and electric vehicles. However, state-of-the-art Li-ion batteries are reaching their theoretical limits in energy density, which has motivated the search for other battery systems based on new chemistries. As potential candidates for the next-generation batteries, Li-metal, all-solid-state, Zn-aqueous, Li-sulfur, and metal-air batteries have attracted much attention because they show higher energy density and stability compared to the current LIB systems. In addition, considering their cost-effectiveness, the development of non-Li-based batteries such as Na, K, and Ca ion batteries could be a good option. We are conducting research to develop these next-generation batteries with improved performance and safety.
Nanomaterials & Structural Design
In developing next-generation batteries, it is very important to synthesize designed materials suitable for the research purpose. For example, in the Li-metal battery field, a hollow core-shell design with an empty space inside the structure is required to efficiently store metallic Li, and in the Li-air battery field, a structure including a space where Li2O2 is formed must be designed. As such, we are designing various nanomaterials using diverse synthesis methods and conducting research to improve cell performance and safety.
Related Papers:
▪ ACS Nano, 2024, 18, 35718
▪ ACS Nano, 2022, 16, 11892
▪ Chem. Eng. J., 2022, 431, 133968
▪ Chem. Eng. J., 2021, 422, 130017
▪ J. Mater. Chem. A, 2021, 9, 1822
▪ ACS Nano, 2017, 11, 1736
Interfacial Engineering
Since battery reactions mainly occur at interfaces and interfacial side reactions act as a main cause of deteriorating cell performance, understanding interfacial reactions is very important in developing high-performance batteries. Therefore, we are conducting research on improving cell performance by stabilizing the interface through various in-depth interfacial analyses and novel strategies.
Related Papers:
▪ Adv. Funct. Mater., 2025, 35, 2417179
▪ Chem. Eng. J., 2025, 506, 160012
▪ Energy Storage Mater., 2024, 71, 103607
▪ Chem. Eng. J., 2023, 469, 143804
▪ Adv. Sci., 2022, 9, 2103826
▪ Adv. Funct. Mater., 2022, 32, 2108203
▪ J. Power Sources, 2021, 490, 229504
▪ Small, 2019, 15, 1900235
Advanced In-situ Analysis
Ex-situ analysis does not accurately reflect the actual cell test conditions because external factors may be involved in the analysis process. On the other hand, in-situ analysis is a non-destructive analysis method that can reflect the actual cell operating conditions by analyzing the cell during electrochemical operation. To solve battery problems and present new solutions by improving the understanding of the reaction mechanism and the accuracy of analysis, we are trying to develop unique in-situ analysis techniques.
Related Papers:
▪ Energy Storage Mater., 2024, 71, 103607
▪ Adv. Funct. Mater., 2022, 32, 2108203
▪ ACS Nano, 2022, 16, 11892
▪ J. Power Sources, 2021, 490, 229504
▪ Small, 2019, 15, 1900235
Reuse & Recycling of Waste Batteries
As the demand for electric vehicles explodes, the problem of the reuse and recycling of waste batteries is emerging as a big issue. Since the amount of rare metals such as Li, Ni, and Co in used batteries is limited, they must be recycled in terms of sustainability in the electrification era. Collecting minerals from waste batteries is similar to urban mining. In particular, in our country, where resources are scarce, it is essential to develop eco-friendly recycling technology to obtain these scarce resources. We will contribute to creating a sustainable world by developing cost-effective and highly efficient resource extraction technology from waste batteries.
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