Energy Storage and Electron Microscopy Laboratory

ESEM(이쌤)

관련기사 바로가기
ESEM(이쌤)

The high demands for rechargeable lithium ion batteries (LIBs) have significantly increased each year for mobile electronics, electric vehicles, and stationary energy storage over the past two decades as a convenient power source. In order to fulfill the demands in these applications, tremendous research progress has been made at stabilizing new electrode materials with high performance and identifying the fundamental failure mechanisms that prevent a prolonged cycle life. Alloy and conversion materials with high specific capacity like silicon, sulfur, and conversion metal oxides have the most promise to increase the energy density of LIBs, but also have scientific challenges to retain their theoretical capacities upon repeated charge and discharge cycles. These new electrode materials have created a high interest for experimental techniques that are able to provide direct, atomic-scale, and real-time observation during the electro-chemical processes.
울산과학기술원 (UNIST) 에너지화학공학과 이현욱 교수 연구실을 소개합니다. 실험실 이름은 full name으로 Energy Storage and Electron Microscopy 연구실, 약자로는 ESEM으로 불립니다. 흔히 ESEM을 한글로 읽으면, ‘이 쎔’이라고 읽게 되는데, 경상도 말로 “이 쌤”과 같은 발음이 됩니다. 즉, “이 선생님”이라는 표현과 중의적으로 이런 이름을 갖게 되었습니다. 연구실에서 연구하는 내용은 크게 이 이름과 관련이 있습니다. Energy Storage와 Electron Microscopy의 복합적인 연구를 지향하고 있습니다. 에너지 저장 소재에 대한 관심으로 이차전지에 대한 연구, 또한 고도분석의 tool로 잘 알려진 Electron Microscopy를 이용하여, 배터리의 깊은 속을 이해하고자 구성원이 모였습니다.

Major research field

In-situ transmission electron microscopy, Materials for rechargeable energy storage, Energy harvesting by an electrochemical system

Desired field of research

Research Keywords and Topics

• Materials for rechargeable energy storage
1. Si (or Si/graphite composite) anodes for high energy lithium ion batteries
2. New insertion electrode materials based on Prussian Blue open-framework structure
3. Mn-based nanostructures for Li ion battery electrode materials
• Energy harvesting by an electrochemical system
• Ferroelectric barium titanate nanostructures

Research Publications
MORE

• NANO LETTERS / Native void space for maximum volumetric capacity in silicon-based anodes / Yeom, Su Jeong; Lee, Cheolmin; Kang, Sujin; Wi, Tae-Ung; Lee, Chanhee; Chae, Sujong; Cho, Jaephil; Shin, Dong Ok; Ryu, Jungki; Lee, Hyun-Wook / 2019-12
• NANO LETTERS / Nanocrevasse-rich carbon fibers for stable lithium and sodium metal anodes / Go, Wooseok; Kim, Min-Ho; Park, Jehee; Lim, Chek Hai; Joo, Sang Hoon; Kim, Youngsik; Lee, Hyun-Wook / 2019-03
• NATURE ENERGY / Scalable synthesis of silicon-nanolayer-embedded graphite for high-energy lithium-ion batteries / Ko, Minseong; Chae, Sujong; Ma, Jiyoung; Kim, Namhyung; Lee, Hyun-Wook; Cui, Yi; Cho, Jaephil / 2016-08