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24 Annealing-Free Thioantimonate Argyrodites with High Li-Ion Conductivity and Low Elastic Modulus
Wo Dum Jung, Ji-Su Kim, Young Jung Kim, Hyeseong Jeong, Daseul Han, Kyung-Wan Nam, Docheon Ahn, Deok-Hwang Kwon, Hun-Gi Jung, Jong-Ho Lee, and Hyoungchul Kim
Advanced Functional Materials, 2023.3.9, Wiley, published

Although Li-ion superconducting sulfides have been developed as solid electrolytes (SEs) in all-solid-state batteries, their high deformability, which is inherently beneficial for room-temperature compaction, is overlooked and sacrificed. To solve this dilemmatic task, herein, highly deformable Li-ion superconductors are reported using an annealing-free process. The target thioantimonate, Li5.2Si0.2Sb0.8S4Br0.25I1.75, comprising bimetallic tetrahedra and bi-halogen anions is synthesized by two-step milling tuned for in situ crystallization, and exhibits excellent Li-ion conductivity (σion) of 13.23 mS cm−1 (averaged) and a low elastic modulus (E) of 12.51 GPa (aver-aged). It has a cubic argyrodite phase of ≈57.39% crystallinity with a halogen occupancy of ≈90.67% at the 4c Wyckoff site. These increased halogen occupancy drives the Li-ion redistribution and the formation of more Li vacancies, thus facilitating Li-ion transport through inter-cage pathway. Also, the facile annealing-free process provides a unique glass-ceramic structure advantageous for high deformability. These results represent a record-breaking milestone from the combined viewpoint of σion and E among promising SEs. Electrochemical characterization, including galvanostatic cycling tests for 400 h, reveals that this material displays reasonable electrochemical stability and cell performance (150.82 mAh g−1 at 0.1C). These achievements shed light on the synthesis of practical SEs suffice both σion and E requirements. 

23 Structural mapping and tuning of mixed halide ions in amorphous sulfides for fast Li-ion conduction and high deformability
Ji-Su Kim, Young Jung Kim, Daseul Han, Kyung-Wan Nam, Gihan Kwon, Tae Wook Heo, Hun-Gi Jung, Kyung Joong Yoon, and Hyoungchul Kim
J. Mater. Chem. A, 11, 2023.03.20, Journal of Materials Chemistry A, published


22 Tailoring shape and exposed crystal facet of single-crystal layered-oxide cathode particles for all-solid-state batteries
Hoyeol Jeon, Deok-Hwang Kwon, Hyoungchul Kim, Jong-Ho Lee, Yongseok Jun, Ji-Won Son, Sangbaek Park
Chemical Engineering Journal, 445, 2022.05.12, published


21 Surface-roughened current collectors for anode-free all-solid-state batteries
Donghee Gu, Hyoungchul Kim, Jong-Ho Lee, Sangbaek Park
Journal of Energy Chemistry, 70, 2022.03.19, published

20 Facile Method for the Formation of Intimate Interfaces in SulfideBased All-Solid-State Batteries
Bin-Na Yun, Seongsoo Lee, Wo Dum Jung, Hyeon-Ji Shin, Jun Tae Kim, Seungho Yu, Kyung Yoon Chung, Hyoungchul Kim*, and Hun-Gi Jung*
ACS Applied Materials&Interfaces, 14, 2022.02.14, published

19 Revisiting the LiPON/Li thin film as a bifunctional interlayer for NASICON solid electrolyte-based lithium metal batteries
이승환, 정세훈, 양성은, 이종호, 신현정, 김주선, 박상백
Applied Surface Science, Accepted, Elsevier, in press


18 Theoretical Analysis of Reversible Phase Evolution in Li-Ion Conductive Halides
김지수, 신성수, 이종호, 김병국, 김형철
Applied Surface Science, 574, February 2022, Elsevier, published

17 Roles of Polymerized Anionic Clusters Stimulating for Hydrolysis Deterioration in Li7P3S11
김지수, 정으뜸, 신성수, 양성은, 박상백, 이종호, 김병국, 이종흔, 김형철
The Journal of Physical Chemistry C, 125, 2021.08.25, ACS Publications, published

16 Quantitative determination of lithium depletion during rapid cycling in sulfide-based all-solid-state batteries
신성수, 김지수, 최성준, 지호일, 윤경중, 이종호, 정경윤, 김형철
Chemical Communications, 57, 2021.03.09, published

15 Functionalized Sulfide Solid Electrolyte with Air-Stable and Chemical-Resistant Oxysulfide Nanolayer for All-Solid-State Batteries
정으뜸, 전민재, 신성수, 김지수, 정훈기, 김병국, 이종흔, 정용재, 김형철
ACS OMEGA, 5 (26015-26022), 2020.10, published


14 Open Ni site coupled with SO4 2- functionality to prompt the radical interconversion of OH ↔ SO4 − exploited to decompose refractory pollutants
최윤정, 김지수, 김형철, 김종식
Chemical Engineering Journal, 400, (125971-125985), 2020.06, published


13 Superionic Halogen-Rich Li-Argyrodites Using In Situ Nanocrystal Nucleation and Rapid Crystal Growth
정으뜸, 김지수, 최성준, 김성민, 전민재, 정훈기, 정경윤, 이종호, 김병국, 이종흔, 김형철
Nano Letters, 20, 4(2303-2309), 2020.02, published


12 Structural and Electronic Descriptors for Atmospheric Instability of Li-Thiophosphate Using Density Functional Theory
김지수, 전민재, 김성민, 이종호, 김병국, 김형철
Solid State Ionics, 346(115225-115229), 2020.01, published


11 Robust Solid-State Interface with a Deformable Glass Interlayer in Ssulfidebased All-Solid-State Batteries
최성준, 전민재, 정으뜸, 양성은, 박상백, 지호일, 이종호, 김병국, 상병인, 김형철
Solid State Ionics, 346(115217-115222), 2020.01, published


10 “Brain‐Coral‐Like” Mesoporous Hollow CoS2@N‐Doped Graphitic Carbon Nanoshells as Efficient Sulfur Reservoirs for Lithium–Sulfur Batteries
서승덕, 박동주, 박상백, 김동완
Advanced Functional Materials, 29, (1903712-1903722), 2019.09, published


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