Ki Seok Kim1, Ji Eun Kang, Peng Chen, Sungkyu Kim, Jongho Ji, Geun Young Yeom, Jeehwan Kim, and Hyun S. Kum

APL Materials

2022-04-13

Epitaxial lift-off techniques, which aim to separate ultrathin single-crystalline epitaxial layers off of the substrate, are becoming increasingly important due to the need of lightweight and flexible devices for heterog...

Natalia Voronina, Min-Young Shin, Hee-Jae Kim, Najma Yaqoob, Olivier Guillon, Seok Hyun Song, Hyungsub Kim, Hee-Dae Lim, Hun-Gi Jung, Younghak Kim, Han-Koo Lee, Kug-Seung Lee, Koji Yazawa, Kazuma Gotoh, Payam Kaghazchi, Seung-Taek Myung

Advanced Energy Materials

2022-04-16

Oxygen-redox-based cathode materials for sodium-ion batteries (SIBs) have attracted considerable attention in recent years owing to the possibility of delivering additional capacity in the high-voltage region. However, t...

Naila Nasir, Sunil Kumar, Minwook Kim, Van Huy Nguyen, Muhammad Suleman, Hyun Min Park, Sohee Lee, Dongwoon Kang, and Yongho Seo

Applied Energy Materials

2022-06-03

Polymer-dispersed liquid crystals (PDLCs), an indispensable class of electrically switchable materials, where nano- or microsized liquid crystal (LC) droplets are phase-separated from the polymer matrix, have been wide...

Jung-Woo Lee, Jiyeong Kim, Kitae Eom, Jaeyoung Jeon, Young Chul Kim, Hwan Sik Kim, Yeong Hwan Ahn, Sungkyu Kim, Chang-Beom Eom, and Hyungwoo Lee

Journal of Physical Chemistry Letters

2022-06-15

SrRuO3 (SRO) has emerged as a promising quantum material due to its exotic electron correlations and topological properties. In epitaxial SRO films, electron scattering against lattice phonons or defects has been conside...

Jae Hyeon Jo, Hee Jae Kim, Najma Yaqoob, Kyuwook Ihm, Oliver Guillon, Kee-Sun Sohn, Naesung Lee, Payam Kaghazchi, Seung-Taek Myung

Energy Storage Materials

2022-06-17

For the first time, we introduce hollandite-type K0.17TiO2, in which potassium ions are located at the center of a (2 × 2) tunnel structure, as a potential cathode material for potassium-ion batteries. Density fu...

Chang-Heum Jo, Natalia Voronina, Seung-Taek Myung

Energy Storage Materials

2022-06-25

Ni-based cathode materials for lithium-ion batteries (LIBs) have long been in the spotlight because of their high energy density. However, conventional Ni-based cathode materials are generally composed of polycrystalline...

Asif Ali, Haider Abbas, Muhammad Hussain, Syed Hassan Abbas Jaffery, Sajjad Hussain, Changhwan Choi, Jongwan Jung

Applied Materials Today

2022-06-29

Chalcogenide materials have promising physical and electrical characteristics for use in advanced memory and electronic synaptic devices. However, limited research has been conducted on chalcogenide materials for highly ...

Mahesh Datt Bhatt, Heeju Kim and Gunn Kim

RSC ADVANCES

2022-08-03

Pristine graphene has been considered one of the most promising materials because of its excellent physical and chemical properties. However, various defects in graphene produced during synthesis or fabrication hinder it...

Sunil Kumar, Hyun Min Park, Van Huy Nguyen, Minwook Kim, Naila Nasir, Manjeet Kumar, Yongho Seo

Ceramics International

2022-08-12

Despite having many properties, Ti3C2Tx MXene lacks stability against oxidation. To exploit its applicability, the stability against oxidation needs to be improved. In this study, we have found an application of Ti3C2Tx ...

Gwan Woo Kim, Gunn Kim

Applied Surface Science

2022-06-01

Two-dimensional (2D) layered electrides are a new class of 2D materials with interstitial anionic electrons. We report a first-principles study of the Ca2N and Y2C bilayers, well-known 2D electrides. When one of the two ...