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Preparation of Highly Oriented Porous LiCoO2 Crystal Films via Li-Vapor Crystal Growth Method
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2018-11-29 00:00:00 , DOI: 10.1021/acs.cgd.8b01176 Mitsunori Kitta 1 , Kentaro Kuratani 1
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2018-11-29 00:00:00 , DOI: 10.1021/acs.cgd.8b01176 Mitsunori Kitta 1 , Kentaro Kuratani 1
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To construct better Li-ion-based batteries, highly oriented porous LiCoO2 crystal film is urgently needed for an active positive electrode. In this study, we prepared such a crystal film via the Li-vapor crystal growth method, which involves a simple reaction between the CoO substrate and Li vapor. Highly crystalline LiCoO2 particles 2–3 μm in size were grown on the CoO substrate surface with strong relation of their orientation. The ⟨110⟩- and ⟨018⟩-oriented LiCoO2 particles, which are preferable for Li-ion conduction, were generated on the CoO(110) substrate. On the CoO(111) substrate, LiCoO2 particles were grown with not only the ⟨003⟩ orientation but also the ⟨012⟩ orientation, suggesting that the crystal growth should follow the three-dimensional structure of the CoO and LiCoO2 lattice. Both the prepared LiCoO2 films from the CoO(110) and CoO(111) substrates exhibited stable and superior electrochemical properties for Li-ion battery cycling, indicating that the films will be useful for high-performance Li-ion-based batteries.
中文翻译：
锂蒸气晶体生长法制备高取向多孔LiCoO 2晶体膜
为了构造更好的基于锂离子的电池，迫切需要用于活性正极的高度取向的多孔LiCoO 2晶体膜。在这项研究中，我们通过Li气相晶体生长方法制备了这种晶体膜，该方法涉及CoO衬底和Li气相之间的简单反应。尺寸为2–3μm的高度结晶的LiCoO 2颗粒生长在CoO基板表面上，并且与它们的方向密切相关。在CoO（110）基板上生成了对Li离子传导更有利的⟨110⟩和⟩018⟩取向的LiCoO 2粒子。在CoO（111）衬底上，LiCoO 2不仅以⟨003⟩取向而且以but012⟩取向生长，这表明晶体生长应遵循CoO和LiCoO 2晶格的三维结构。由CoO（110）和CoO（111）基材制备的LiCoO 2膜均显示出稳定且优异的电化学性能，可用于锂离子电池循环，这表明该膜将对高性能锂离子电池有用。
更新日期：2018-11-29
中文翻译：
锂蒸气晶体生长法制备高取向多孔LiCoO 2晶体膜
为了构造更好的基于锂离子的电池，迫切需要用于活性正极的高度取向的多孔LiCoO 2晶体膜。在这项研究中，我们通过Li气相晶体生长方法制备了这种晶体膜，该方法涉及CoO衬底和Li气相之间的简单反应。尺寸为2–3μm的高度结晶的LiCoO 2颗粒生长在CoO基板表面上，并且与它们的方向密切相关。在CoO（110）基板上生成了对Li离子传导更有利的⟨110⟩和⟩018⟩取向的LiCoO 2粒子。在CoO（111）衬底上，LiCoO 2不仅以⟨003⟩取向而且以but012⟩取向生长，这表明晶体生长应遵循CoO和LiCoO 2晶格的三维结构。由CoO（110）和CoO（111）基材制备的LiCoO 2膜均显示出稳定且优异的电化学性能，可用于锂离子电池循环，这表明该膜将对高性能锂离子电池有用。
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