Hyunyoung Park
성균관대학교 약학대학 · 공학
Hyunyoung Park 교수의 연구실은 리튬-황 배터리와 나트륨/칼륨 이온 배터리의 핵심 과제인 이온 이동성 저하, 다이아몬드화 반응 속도 저하, 다이아몬드화 물질의 볼륨 팽창 문제를 해결하기 위해 기능성 분리막 및 나노구조 전극 재료의 설계에 중점을 두고 있습니다. 특히, 니켈-iron 합금, 루비드 하이드록사이드 양자점, 페타코르핀 유사 고분자 등 다양한 나노소재를 활용해 리튬폴리설파이드의 쇼터팅을 억제하고 반응 동력을 향상시키는 연구를 진행하고 있습니다. 또한, 고체 전해질과의 상호작용을 최적화하고, 대량 생산이 가능한 저비용 소재 기반의 고성능 배터리 시스템을 개발하는 데 목표를 두고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Abstract The practical application of lithium–sulfur batteries (LSBs) is limited by the shuttle effect of lithium polysulfides (LiPSs), large volume expansion, and sluggish conversion kinetics of sulfur. Herein, the crystallinity regulation of Ni x Fe y alloy anchored on oxidized carbon nanotube/nitrogen‐doped graphene (Ni x Fe y @OCNT/NG) for application of a functional separator into LSBs is demonstrated. A low crystalline Ni x Fe y @OCNT/NG (LC‐Ni x Fe y @OCNT/NG) modified polypropylene separ
Functional separators, which are chemically modified and coated with nanostructured materials, are considered an effective and economical approach to suppressing the shuttle effect of lithium polysulfide (LiPS) and promoting the conversion kinetics of sulfur cathodes. Herein, we report cobalt-aluminum-layered double hydroxide quantum dots (LDH-QDs) deposited with nitrogen-doped graphene (NG) as a bifunctional separator for lithium-sulfur batteries (LSBs). The mesoporous LDH-QDs/NG hybrids posses
Abstract Metal phthalocyanine (Pc) complexes are considered to be promising functional organic materials owing to their tunable properties and unique π‐electron structure. Despite these advantages, the application of polymeric metal Pc into lithium–sulfur (LiS) batteries has yet to be explored. Herein, this work demonstrates a molecular design of multifunctional polymeric cobalt Pc with triethylene glycol linkers (TCP) that provide a redox mediating capability for the Co ion in the center of th
T-Na<sub>2</sub>Fe<sub>2</sub>F<sub>7</sub> based on three-dimensionally connected FeF<sub>6</sub> octahedra exhibits large specific capacity and ultra-high-stable cycling performance as a promising cathode for NIBs.
Abstract As a promising candidates for next‐generation secondary battery system, sodium‐ion (Na‐ion) batteries and potassium‐ion (K‐ion) batteries are recently attracting considerable attention because of their cost‐effectiveness and similar reaction mechanism to that of lithium‐ion batteries. However, the major challenges for their practical application are sluggish ionic kinetic with excessive volume change of the cathode material, caused by larger ionic radius than Li + ion. The current deman
The K<sub>1.5</sub>VOPO<sub>4</sub>F<sub>0.5</sub> crystal structure provides a robust structural framework with large two-dimensional pathways, contributing to facile K<sup>+</sup> diffusion despite the large ionic radius of K<sup>+</sup> ions.
