https://scholar.dgist.ac.kr/handle/20.500.11750/12117 2026-08-03T12:49:03Z https://scholar.dgist.ac.kr/handle/20.500.11750/60577 Title: 마이크로 캡슐의 위치선택적 분포 제어 방법 Author(s): 이민규; 이현태; 김민욱; 김종백; 송영탁; 홍종섭; 이홍경; 임민홍 Abstract: 본 발명은 (a) 마이크로 캡슐을 포함하는 혼합물을 제조하는 단계, (b) 분포제어부가 물리장을 혼합물 또는 혼합물로 제조된 1차 가공물로 제공하여 마이크로 캡슐의 정렬을 유도하는 단계 및 (c) 마이크로 캡슐이 물리장에 의해 위치선택적으로 분포되어 정렬되는 단계를 포함하는 것을 특징으로 하는 마이크로 캡슐의 위치선택적 분포 제어 방법을 제공한다. https://scholar.dgist.ac.kr/handle/20.500.11750/60513 Title: Lithiophilic Current Collector Without Interfacial Penalty in Zero-Excess Lithium Metal Batteries Author(s): Seo, Jiyeon; Lee, Sangseob; Jeon, Seojin; Lim, Minhong; Koo, Hyegang; Hong, Seung-Tae; Jang, Woosun; Soon, Aloysius; Lee, Hongkyung Abstract: Highly reversible lithium (Li) plating/stripping in zero-excess Li metal batteries (ZE-LMBs) demands lithiophilic current collectors to suppress Li dendrite formation and Li pulverization. Although Li-alloyable metals have been recognized as lithiophilic substrates, their structural and interfacial stability over cycling are still poorly understood. Here, we present a bimetallic lithiophilic current collector through sequential coatings of platinum (Pt) and silver (Ag). Experimental and computational studies reveal that Ag facilitates uniform Li nucleation and seamless solid electrolyte interphase (SEI) formation owing to the low Li diffusion barrier and strong anion adsorption, whereas Pt maintains lithiophilicity and structural integrity. Leveraging this complementarity, the Ag-outer/Pt-inner bilayer (Ag/Pt@Cu) achieves superior cycling stability through location-specific functional decoupling: the outer Ag layer ensures uniform Li deposition and robust SEI formation, whereas the inner Pt layer supports long-term lithiophilicity, thereby outperforming the reversed configuration (Pt/Ag@Cu). Given that the structural robustness of lithiophilic coatings is essential for enhancing the cycling performance of ZE-LMBs, this study provides a versatile design framework for multi-component, multi-layer architectures, enabling the rational engineering of structurally resilient, lithiophilic current collectors. 2026-05-31T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/60484 Title: Stepwise Activation-Guided Zn Deposition for Ultra-High Capacity in Flowless Zn-Br Batteries Author(s): Han, Jaewoong; Lee, Mingyu; Lee, Hyuntae; Shin, Youyeong; Kim, Suhwan; Shin, Kyungjae; Kim, Chanyeon; Kim, Hee-Tak; Lee, Yong Min; Lee, Hongkyung Abstract: Flowless Zn-bromine batteries (FL-ZBBs) are attracting attention as a route to overcome the inherent system-level limitations of conventional flow batteries. However, the difficulty of achieving high ZnBr2 utilization and ultra-high areal capacity jeopardize practical feasibility: Under practically relevant conditions, Zn-hosting electrodes suffer from top-plating issues and dendrite-triggered "dead" Zn accumulation, which deteriorates reversible Zn plating/stripping. This work presents a stepwise activation (SWA) electrode that guides top-plating-free, bottom-to-top sequential Zn deposition. The SWA architecture is designed by introducing insulating porous membranes physically separating stacked CF layers while electrically linking through controlled partial Zn penetration. Benefiting from SWA-guided Zn deposition, FL-ZBBs can stably retain higher Coulombic and energy efficiencies even at a high current cycling (20 mA cm-2) over 10 000 cycles. For the first time, we demonstrate a stable ultra-high capacity cycling (100 mAh cm-2) of FL-ZBB with SWA electrode by maximizing the ZnBr2 utilization (similar to 33%). This simple, scalable SWA design offers broad applicability, enabling high-capacity operation in flowless batteries and extending to other metal-deposition-limited redox systems. 2026-02-28T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/60438 Title: 단계 활성화 전극을 활용한 고 용량 레독스 전지 설계 Author(s): 이홍경; 한재웅; 이민규; 이현태 Abstract: 본 발명은 아연-브롬 전지용 음극 및 이를 포함하는 아연-브롬 전지에 관한 것으로, 상세하게는 음극으로 사용되는 탄소체에 관통홀을 도입함으로써 전해질 이동통로를 확보하여 음극의 상단 부분뿐만 아니라 관통홀의 내부에까지 아연 금속이 균일하게 전착될 수 있고 덴드라이트의 성장을 억제하여, 이에 따라 높은 쿨롱 효율, 전압 효율 및 에너지 효율을 나타내는 고성능의 아연-브롬 전지용 음극 및 이를 포함하는 아연-브롬 전지에 관한 것이다.