2023 |
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198 |
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. |
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197 |
Advancing towards ready-to-use solid oxide fuel cells: 5 minute cold start-up with high-power performance
Hyeseong Jeong, Channyung Lee, Ji-Won Son, Seung Yong Lee, Kyung Joong Yoon, Dongwook Shin, Mansoo Choi, Sung Soo Shin, and Hyoungchul Kim
J. Mater. Chem. A,
11,
2023.03.20, Journal of Materials Chemistry A, published
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196 |
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
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195 |
Exsolution of Ru Nanoparticles on BaCe0.9Y0.1O3-δ Modifying Geometry and Electronic Structure of Ru for Ammonia Synthesis Reaction Under Mild Conditions
Hayoung Kim, Asif Jan, Deok-Hwang Kwon, Ho-Il Ji, Kyung Joong Yoon, Jong-Ho Lee, Yongseok Jun, Ji-Won Son, and Sungeun Yang
Small,
19,
Wiley, published
- Green ammonia is a carbon-free energy carrier and storage medium synthesized using green hydrogen and an active catalyst. - The catalytic activity of ammonia synthesis can be improved by controlling the geometry and electronic structure of the active species through an exsolution process. - Ru nanoparticles exsolved on a BaCe0.9Y0.1O3-δ support exhibit high activity and uniform size distribution, and are well-anchored to the support with in-plane epitaxy. The electronic structure of Ru is modified by in situ Ba promoter accumulation.
(Note that this is a summary of the abstract using chatGPT) |
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2022 |
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194 |
High-Performance and Durable Fuel Cells using Co/Sr-Free Fluorite-Based Mixed Conducting (Pr,Ce)O2-δ Cathode
Han Gil Seo, Dong Hwan Kim, Jongsu Seo, Seung Jin Jeong, Jinwook Kim, Harry L. Tuller, Ji-Won Son, WooChul Jung
Advanced Energy Materials,
12,
2022.11.17, Wiley, published
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193 |
An Unprecedented Vapor-Phase Sintering Activator for Highly Refractory Proton-Conducting Oxides
Hyegsoon An, Seunghyeok Im, Junseok Kim, Byung-Kook Kim, Ji-Won Son, Kyung Joong Yoon, Hyoungchul Kim, Sungeun Yang, Hyungmook Kang, Jong-Ho Lee, Ho-Il Ji
ACS Energy Letters,
7,
2022.10.21, ACS Publications, published
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열람중 |
Addressing planar solid oxide cell degradation mechanisms: A critical review of selected components
Stephen J. McPhail, Stefano Frangini, Jérôme Laurencin, Elisa Effori, Amira Abaza, Aiswarya Krishnakumar Padinjarethil, Anke Hagen, Aline Léon, Annabelle Brisse, Daria Vladikova, Blagoy Burdin, Fiammetta Rita Bianchi, Barbara Bosio, Paolo Piccardo, Robert
Electrochemical Science Advances,
2,
2022.10, European Chemical Societies Publishing, published
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191 |
Exploration of a Ce0.65Zr0.25Pr0.1O2−δ-Based Electrocatalyst That Exhibits Rapid Performance Deterioration Despite Its High Oxygen Storage Capability
Seol Hee Oh, Eun Hui Park, Hyun-Kyu Kim, Jason Kim, Hee-Sung Yoon, Yeong-Cheol Kim, Sun-Young Park, Sungeun Yang, Ho-Il Ji, Kyung Joong Yoon, Ji-Won Son, Jong-Ho Lee
ACS Appl. Energy Mater,
5,
2022.07.14, published
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190 |
The proton uptake process in double perovskite triple ionic-electronic conducting oxides for protonic ceramic cells
Seunghyeok Im, Muhammet Ali Berk, Sungeun Yang, Byung-Kook Kim, Kyung Joong Yoon, Ji-Won Son, Jong-Ho Lee, Ho-Il Ji
J. Mater. Chem. A,
10,
2022.07.07, published
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188 |
Construction of high-temperature electronic conduction paths for the scale-up of solid oxide fuel cell technology
Mi Young Park, Sun-Young Park, Haewon Seo, Jin-Mook Jung, Hyo Ki Hwang, Jongsup Hong, Jun-Young Park, Insung Lee and Kyung Joong Yoon
Journal of Materials Chemistry A,
10,
2022.05.09, published
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185 |
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
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한국과학기술연구원 홈페이지
https://chemistry-europe.onlinelibrary.wiley.com/doi/full/10.1002/elsa…
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