Nascimento Nunes Barbara, Karger Leonhard, Zhang Ruizhuo, Kondrakov Aleksandr, Brezesinski Torsten
Battery and Electrochemistry Laboratory (BELLA), Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131, Karlsruhe, Germany.
BASF SE, Carl-Bosch-Str. 38, 67056, Ludwigshafen, Germany.
ChemSusChem. 2025 Apr 14;18(8):e202402202. doi: 10.1002/cssc.202402202. Epub 2024 Dec 10.
Lithium nickel oxide (LNO) is a promising cathode candidate in various next-generation battery technologies. To increase its stability, doping and surface coating have become key strategies. Among various elements, niobium stands out for its dual role as an effective dopant and the advantages of its oxide phases as coatings. In this study, we explore Nb-based coating of LNO, utilizing methods that minimize or eliminate solvent use. Additionally, the coated samples were treated at two different temperatures to study their effect on properties and electrochemical performance. Our results demonstrate that the coating process strongly affects the cell cyclability and further highlight the potential of Nb-based protective coatings in enhancing LNO as a cathode active material for application in high-energy-density Li-ion batteries.
锂镍氧化物（LNO）是各种下一代电池技术中一种很有前景的阴极候选材料。为了提高其稳定性，掺杂和表面涂层已成为关键策略。在各种元素中，铌因其作为有效掺杂剂的双重作用以及其氧化物相作为涂层的优势而脱颖而出。在本研究中，我们探索了LNO的铌基涂层，采用了尽量减少或消除溶剂使用的方法。此外，对涂覆后的样品在两个不同温度下进行处理，以研究其对性能和电化学性能的影响。我们的结果表明，涂层过程强烈影响电池的循环性能，并进一步突出了铌基保护涂层在增强LNO作为高能量密度锂离子电池阴极活性材料方面的潜力。
