Fabrication and electrochemical properties of LiMn₂O₄/SrRuO₃ multi-layer epitaxial thin film electrodes

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• 作者：Kota Suzuki ; Kyungsu Kim ; Sou Taminato ; Masaaki Hirayama ; Ryoji Kanno ; ^{kanno@echem.titech.ac.jp}
• 关键词：Epitaxial thin film ; Lithium manganese oxide ; Buffer layer ; Lithium battery ; Multi-layer electrode
• 刊名：Journal of Power Sources
• 出版年：2013
• 出版时间：15 March, 2013
• 年：2013
• 卷：226
• 期：Complete
• 页码：340-345
• 全文大小：484 K

文摘

Multi-layer thin films of LiMn₂O₄/SrRuO₃ have been epitaxially grown on SrTiO₃ (111) substrates using a pulsed laser deposition method. The multi-layer electrodes show excellent electrochemical properties due to introduction of an electronic conducting buffer layer between the lithium cathode film and semiconducting substrate. Moreover, the electrochemical characteristics of the lithium cathode materials are strongly dependent on the electronic contact. Thus, the epitaxially grown electrodes can be used as ideal crystalline models to obtain information about the lattice plane, surface roughness, and thickness of electrodes. This information can be used to elucidate the reaction mechanisms of lithium batteries.