UNIST · Engineering
Nam-Soon Choi 교수의 연구실은 리튬이온이온 배터리의 고에너지 밀도 및 장수명을 실현하기 위해 전기화학적 인터페이스 안정성 향상에 중점을 두고 있습니다. 특히 니켈 레이어드 산화물 및 실리콘 기반 나노소재를 활용한 고용량 양극과 음극의 안정성 제고, 전해질 첨가제를 통한 불안정한 반응종 제거 및 이온 분리 촉진 기술을 핵심 연구 주제로 다룹니다. 또한 고전압 양극에서의 표면 필름 형성과 나노재료 기반 전극 설계를 통해 배터리 성능의 근본적 향상을 도모하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
In conjunction with electrolyte additives used for tuning the interfacial structures of electrodes, functional materials that eliminate or deactivate reactive substances generated by the degradation of LiPF<sub>6</sub> -containing electrolytes in lithium-ion batteries offer a wide range of electrolyte formulation opportunities. Herein, the recent advancements in the development of: (i) scavengers with high selectivity and affinity toward unwanted species and (ii) promoters of ion-paired LiPF<sub
Electrolyte additives have been explored to attain significant breakthroughs in the long-term cycling performance of lithium-ion batteries (LIBs) without sacrificing energy density; this has been achieved through the development of stable electrode interfacial structures and the elimination of reactive substances. Here we highlight the potential and the challenges raised by studies on electrolyte additives toward addressing the interfacially induced deterioration of high-capacity electrodes with
We present the useful processes in the research of functional electrolytes for interfacial stability of high-voltage cathodes in Li-ion batteries.
There has been tremendous interest in using nanomaterials for advanced Li-ion battery electrodes, particularly to increase the energy density by using high specific capacity materials. Recently, it was demonstrated that one dimensional (1D) Si/Sn nanowires (NWs) and nanotubes (NTs) have great potential to achieve high energy density as well as long cycle life for the next generation of advanced energy storage applications. In this feature article, we review recent progress on Si-based NWs and NT
An organic–inorganic based surface film was formed on a 5 V-class LiNi<sub>0.5</sub>Mn<sub>1.5</sub>O<sub>4</sub> cathode by tris(trimethylsilyl)phosphite (TMSP). This surface-modified cathode exhibited significantly improved electrochemical properties in terms of cycling stability and rate capability.
Abstract Moderne Energiespeichertechnologien, einschließlich elektrischer Doppelschichtkondensatoren und wiederaufladbarer Batterien, sind von enormer Bedeutung für Anwendungen in tragbaren Elektronikgeräten, als Elektrizitätsspeicher für Ladestationen von Elektrofahrzeugen und zum Lastausgleich von erneuerbaren Energiequellen wie Sonnenenergie und Windkraft. Der Einsatz von Lithiumbatterien und elektrischen Doppelschichtkondensatoren in diesen Technologien bedarf der wissenschaftlichen Grundlag
Ein vernetztes Polymer als Bindemittel (rot im Bild) verhindert mechanische Brüche in negativen Siliciumelektroden. Silicium-Nanopulver in einem 3D-Gerüst aus Polyacrylsäure und Natriumcarboxymethylcellulose zeigt eine hohe reversible Kapazität (>2000 mAh g−1) nach 100 Zyklen bei 30 °C und behält eine hohe Kapazität und Stromdichte bei. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. T
