https://scholar.dgist.ac.kr/handle/20.500.11750/834 2026-04-05T15:52:45Z https://scholar.dgist.ac.kr/handle/20.500.11750/60160 Title: 이차전지용 전해질 및 이를 포함하는 이차전지 Author(s): 양창의; 강석범; 이호춘 https://scholar.dgist.ac.kr/handle/20.500.11750/59187 Title: SULFONE-BASED ELECTROLYTE AND SECONDARY BATTERY COMPRISING SAME Author(s): 이호춘; 한철희 Abstract: The present invention relates to a sulfone-compound-based electrolyte and a secondary battery comprising the sulfone-compound-based electrolyte. The secondary battery according to the present invention can suppress gas generation in a high temperature or thermal runaway environment, or generate noncumbustible gas so as to lower the risk of combustion or explosion. https://scholar.dgist.ac.kr/handle/20.500.11750/59095 Title: A Tailored Adhesive-Conductive Interlayer for Interface Stabilization of Large-Scale Lithium Metal Powder Electrodes for High-Energy-Density Batteries Author(s): Kang, Dongyoon; Jeong, Minseok; Kim, Suhwan; Song, Myunggeun; Dzakpasu, Cyril Bubu; Kim, Sun Hyu; Lim, Jaejin; Eom, Sewon; Jung, Seonghyeon; Jang, Jieun; Jo, Seungyun; Jeon, Heeji; Lee, Hyobin; Choi, Seungyeop; Jo, Taejin; Lee, Hochun; Ryu, Du Yeol; Kim, Jeonghun; Lee, Yong Min Abstract: To address the limitations in thickness and width of lithium (Li) metal electrodes produced through traditional extrusion and pressing processes, a slurry-based coating method utilizing Li metal powder (LMP) is investigated, enabling the fabrication of ultra-thin and broad-width Li electrodes by simply tuning the coating conditions. Despite these advancements, LMP electrodes face critical challenges, including delamination of the LMP composite layer from the Cu current collector (CC) due to electrolyte infiltration at the interface and degradation of interfacial connectivity during charging/discharging cycles. To mitigate these issues, an adhesive-conductive polymer (AC-polymer) interlayer composed of poly(3,4-ethylenedioxythiophene) (PEDOT) and poly(styrene sulfonate-co-acrylic acid) (P(SS-co-AA) is introduced between the LMP composite layer and the Cu CC to improve interfacial stability. The incorporation of the AC-polymer interlayer significantly reduced the Li stripping overpotential from 89.8 to 35.8mV (a 60% decrease) and enhanced cycling stability, achieving 91% capacity retention at a 4mA cm−2 discharging rate after 150 cycles, even in a carbonate-based electrolyte. The successful fabrication of a 300mm-wide and 20µm-thick slurry-coated AC-LMP electrode represents a notable advancement in the development of Li metal batteries. 2025-09-30T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/59076 Title: V-O 계 신규 리튬 전지용 전극물질 Author(s): 형주은; 홍승태; 박기성; 유호창; 허종욱; 이호춘 Abstract: 본 발명의 일 측면에 따르면, V4O9 을 포함하는 리튬 이온 전지용 전극 물질로서, 사방정계(orthorhombic) 결정구조를 갖고, 8.50 003c# a 003c# 12.5Å, 7.10 003c# b 003c# 9.3Å, 14.5 003c# c 003c# 18.6Å, α,β,γ = 90°의 격자 파라미터(cell parameter)를 갖는 리튬 이온 전지용 전극 물질 및 이의 제조 방법이 제공된다. 또한, 상기 새로운 구조의 V4O9:폴리아크릴로니트릴 또는 폴리비닐리덴 플루오라이드(PVDF):탄소를 8:1:1 (wt%) 로 포함하는 작업 전극(working electrode); Li 금속을 포함하는 상대 전극(counter electrode); 및 에틸렌 카보네이트:디메틸 카보네이트의 부피비가 1:2 인 용액에 용해된 1M LiPF6 을 포함하는 전해질; 을 포함하는 리튬 이온 전지가 제공된다.