Education

• Researcher, GIST, 2026.09 - 

• Researcher, Ecotech Global Inc., 2026.02 - 2026.08 

• M.S., Materials Science and Engineering, JBNU, 2024.03 - 2026.02

• B.S., Materials Science and Engineering, WKU, 2018.03 - 2024.02

Publications

[4] Ceramist accepted, 2026

Structural engineering of inorganic materials for skin-integrated deformable bioelectronics

Sang-II Yoon, Se Jin Choi, Chaeung Kim, Yunju Im, Eunbi Heo, Sieun Kim, Haneol Lee*

[3] Progress in Natural Science: Materials International 36(1), 195, 2026

Fast-fired and fine-grained pyrochlore dielectrics for optimized energy storage performance

Sang-II Yoon†, Hyunseung Kim†, Changyeon Baek†, Seung Yong Lee, Tiandong Zhang ,Gyoung-Ja Lee, Min-Ku Lee*, Do Kyung Kim*, Chang Kyu Jeong*

IF 7.4, JCR top 23.6%

[2] Journal of Power Sources 669, 239375, 2026

Empowering energy storage performance of pyrochlore dielectrics through multicomponent octahedral interactions and nanodomain tuning

Seung Yong Lee†, Hyunseung Kim†, Changyeon Baek†, Min-Ku Lee, Sang-Il Yoon, Yong Zhang, Andris Sutka, Gyoung-Ja Lee*, Do Kyung Kim*, Chang Kyu Jeong*

IF 8.4, JCR top 14.8%

[1] Current Opinion in Solid State and Materials Science 39, 101240, 202

Pyrochlore oxides: redefining dielectric materials prospective towards fresh energy storage capacitors

Hyunseung Kim†, Changyeon Baek†*, Sang-Il Yoon, Dong Hoon Lee, Youngseo Song, Kwi-Il Park, Angus I. Kingon, Seung-Hyun Kim*, Chang Kyu Jeong*

IF 13.4, JCR top 6.1%

Honors and Awards

• Best Poser Presenatation Award, 2024 Fall Conference of the Korean Institute of Electrical and Electronic Material Engineers (KIEEME)

Presentations (Oral and International)

• 2025 Summer Conference of the Korean Institute of Electrical and Electronic Material Engineers (KIEEME) for Oral Presentation, Busan, Korea (Jun. 18th - 20th, 2025)