Hyunmin lee
YONGIN-SI,Gyeonggi-do
Summary
Materials Science and Engineering undergraduate at POSTECH with research experience in lithium-ion and all-solid-state batteries. Experienced in Li-rich/DRX cathodes, silicon composite anodes, solid electrolytes, PVD-based metal anodes, electrode fabrication, electrochemical testing, and XRD analysis. Interested in advanced battery materials and structure–electrochemical property relationships.
Overview
1
1
year of professional experience
Work History
Battery Materials R&D Intern
FLUX Inc.
Cheonan-si
07.2026 - 08.2026
- Conducted technical research on lithium-metal, zinc-metal, anode-free, and other next-generation battery-anode technologies.
- Analyzed PVD-based metal-anode manufacturing processes, competing technologies, companies, and relevant market trends.
- Supported internal battery-anode R&D through literature review, technical data organization, and research-related assistance.
- Gained practical insight into the progression of battery-material technologies from research and process development to product validation, commercialization, and scale-up.
Undergraduate Research Intern
SPARK Laboratory, POSTECH
Pohang-si
06.2026 - 07.2026
- Fabricated silicon-based composite electrodes using LPSCl and solid polymer electrolytes.
- Assembled all-solid-state half-cells with CVD-derived silicon and silicon–polymer composite anodes.
- Compared ionic and electronic conductivity in different solid-electrolyte and composite-electrode systems.
- Conducted literature reviews on silicon anodes, solid polymer electrolytes, and all-solid-state battery interfaces.
Undergraduate Researcher Intern
AMEE Laboratory, POSTECH
Pohang-si
01.2026 - 06.2026
- Conducted research on Li-rich layered and disordered rock-salt cathode materials for next-generation high-energy lithium-ion batteries.
- Independently carried out a graduation research project on the structure–electrochemical property relationship of LNTMO cathodes with intermediate ordering between layered and disordered rock-salt structures.
- Controlled structural ordering by varying calcination temperature and atmosphere, and analyzed phase formation and structural evolution using X-ray diffraction.
- Fabricated electrodes and coin cells and evaluated capacity, reaction kinetics, voltage behavior, and cycling performance through electrochemical testing.
- Correlated XRD and electrochemical data to assess whether intermediate ordering could combine the high capacity and kinetics of layered structures with the structural buffering and low-voltage redox behavior of disordered rock-salt structures.
Undergraduate Research Intern
EMRL Laboratory, POSTEH
Pohang-si
02.2025 - 06.2025
- Studied cathode materials, fundamental electrochemistry, and active-material design principles for rechargeable batteries.
- Reviewed research topics including Ni-rich cathode degradation and structural changes during thermal runaway, battery thermodynamics, sodium-ion cathodes, and density functional theory.
- Built a foundational understanding of how crystal structure, electronic structure, and oxygen-orbital stability influence battery performance.
Education
Bachelor of Science - Materials Science and Engineering / Minor in Sustainable Energy Materials
POSTECH
Pohang-si, Republic of Korea 2023 - Current
Skills
English: TOEIC Speaking IH, TOEIC Writing AL
Software: Microsoft Office, Origin, X’Pert HighScore
- Data analysis
- Electrochemical testing
- Team Leadership
LEADERSHIP & EXTRACURRICULAR ACTIVITIES
POSTECH Student Ambassador Group “ALIMI”
Vice President, Treasurer, and Campus Tour Team Leader
- Served for approximately two and a half years in multiple leadership roles, including Vice President, Treasurer, and Campus Tour Team Leader.
- Led campus tours, admissions-related programs, and the Science and Engineering Major Exploration Program for prospective students.
- Contributed to university promotion through POSTECHIAN magazine articles, card-news content, and promotional videos.
- Developed leadership, public speaking, event planning, communication, and team-management skills.
Club Member
- Participated in university baseball competitions, including the POSTECH–KAIST Science War and Stadium tournaments.
- Completed an intensive one-month summer training camp in preparation for competitions.
- Strengthened teamwork, discipline, perseverance, and mental resilience through competitive team sports.
Staff Member
- Supported student-welfare events, snack-distribution programs, and partnerships with external businesses.
Planning Team Member
- Planned and operated a large-scale university festival, including on-site event coordination and management.
Entrepreneurship Club Member
- Participated in startup programs involving idea development, team collaboration, and entrepreneurship activities.
Cultural Affairs Division Member
- Supported departmental event planning and operations to promote student participation and engagement.
PROFESSIONAL DEVELOPMENT
Sustainable Management and ESG Program
POSCO & POSTECH Institute for Sustainable Development
Sep. 2024 – Nov. 2024
- Completed a joint professional-development program covering sustainable management, ESG principles, and corporate approaches to environmental and social responsibility.
INTERNATIONAL EXPERIENCE
Exchange Student, Technische Universität Berlin (TU Berlin)
Sep. 2026 – Feb. 2027 (Expected)
- Selected for a semester-long exchange program to strengthen academic English communication, experience an international research environment, and explore German culture and research institutions.
Timeline
Battery Materials R&D Intern
FLUX Inc.
07.2026 - 08.2026
Undergraduate Research Intern
SPARK Laboratory, POSTECH
06.2026 - 07.2026
Undergraduate Researcher Intern
AMEE Laboratory, POSTECH
01.2026 - 06.2026
Undergraduate Research Intern
EMRL Laboratory, POSTEH
02.2025 - 06.2025
Bachelor of Science - Materials Science and Engineering / Minor in Sustainable Energy Materials
POSTECH
2023 - Current