Energy Materials Research Lab
Welcome to SK Jung Research Group!
As global warming, environmental pollution, and depletion of fossil fuels are emerging as global issues, the significance of energy storage technology is rapidly increasing for efficient energy usage. Expansion of the application of the wireless electrical energy from small electronic devises to energy storage system or electric vehicles moves up the energy ubiquitous era in which the electrical energy can be used anywhere, anytime, without being constrained by time and space. At the same time, one of the recent biggest issues of unusual climate change or global warming accelerates the development of efficient energy storage system for carbon-neutral energy cycles. Those changes in energy and environmental technologies highly requests on the development of sustainable energy storage and conversion devices with high energy density.
In response to the requests, we are mainly trying to design and discover advanced new energy materials. Based on the discovery of novel materials, we systematically study on the material characterization and finally apply the material to the fabrication of electrochemical devices to bridge the fundamental knowledge to the energy storage and conversion technologies. We are focusing on the defining the key question with "What" and "How" and solving the core issues in energy research fields.
Recent News
Su Jeong Chun and Seung Hwan Lee joined EMRL as undergraduate intern with U-SURF program. Welcome!
Myungju, Ye won joined EMRL as undergraduate intern. Welcome!
Juho Lee's work has been accepted in Nature Communications. Congratulations!
Hyoi Jo's work with Changju Lee has been accepted in Journal of Materials Chemistry A. Congratulations!
Sang Hyun Lee, Hwa Yeong Kim joined EMRL as undergraduate intern. Welcome!
Sangpyo Lee's work with Youngkyung Kim has been accepted in ACS Energy Letters. Congratulations!
Hyo Jun Kim joined EMRL as undergraduate intern. Welcome!
Ji Won Kim, Daeyeon Lee (Integrated course), and Jiye Moon (Master Course) joined EMRL as graduate student. Welcome!
Honghyun Youn joined EMRL as undergraduate intern with U-WURF program. Welcome!
Notice
(2024. 03) Master position supported by Samsung SDI is open.
(2024. 03) Master position supported by POSCO-Chemical is open.
(2024. 03) Master position supported by SK-On is open.
(2024. 03) Integrated position is open.
We are looking for motivated graduate students for joining EMRL. Please check openings and e-mail to Sung-Kyun.
In our research, we propose a strategy to design partially disordered Mn-based spinel cathode materials with a rock-salt-phase-enriched surface to maintain a stable capacity by inducing favorable phase transitions during cycling. We demonstrate that by prioritizing phase transitions from a DRX-like phase to spinel-like phases at the surface, the detrimental two-phase reaction from a cubic spinel to tetragonal spinel phase can be successfully delayed. Simple manipulation of the spatial distribution, specifically by allocating the desirable phase to the surface, such that the surface phase transition precedes that in the bulk, is verified to effectively enhance the capacity retention.
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Energy Materials Research Laboratory, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
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