Synthesis of High-Entropy Layered Oxide Epitaxial Thin Films: LiCr1/6Mn1/6Fe1/6Co1/6Ni1/6Cu1/6O2
Synthesis of High-Entropy Layered Oxide Epitaxial Thin Films: LiCr1/6Mn1/6Fe1/6Co1/6Ni1/6Cu1/6O2
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DOI：
10.1021/acs.cgd.1c01076
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发表时间：
2022-01
影响因子：
3.8
通讯作者：
Kaidong Wang;K. Nishio;K. Horiba;M. Kitamura;K. Edamura;Daisuke Imazeki;Ryozo Nakayama;R. Shimizu;H. Kumigashira;T. Hitosugi
中科院分区：
文献类型：
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作者：
Kaidong Wang;K. Nishio;K. Horiba;M. Kitamura;K. Edamura;Daisuke Imazeki;Ryozo Nakayama;R. Shimizu;H. Kumigashira;T. Hitosugi
高熵氧化物是一种具有独特功能的新兴材料。然而，尽管已经开发了各种块体类型的高熵氧化物，但对高熵氧化物薄膜的研究有限。本文报道了用脉冲激光沉积技术制备层状岩盐结构LiCr_（1/6）Mn_（1/6）Fe_（1/6）Co_（1/6）Ni_（1/6）Cu_（1/6）O_2外延薄膜的研究。通过调节激光能量密度和衬底温度，获得了单相外延薄膜。此外，我们制作了一个薄膜型固态电池与外延薄膜作为正极。电池表现出稳定的操作。本研究结果为合成具有层状岩盐结构的高熵氧化物外延薄膜提供了平台。
High-entropy oxides are emerging materials with unique functionalities. However, while various bulk-type high-entropy oxides have been developed, limited research has been pursued for high-entropy oxide thin films. In this paper, we report the synthesis of LiCr1/6Mn1/6Fe1/6Co1/6Ni1/6Cu1/6O2epitaxial thin films with a layered rocksalt structure via the pulsed laser deposition technique. We obtained a single-phase epitaxial thin film by tuning the laser fluence and substrate temperature. In addition, we fabricated a thin-film-type solid-state battery with the epitaxial thin film as a positive electrode. The battery exhibited stable operation. The results of this study provide a platform for synthesizing high-entropy oxide epitaxial thin films with the layered rocksalt structure.