Characterization of Thin-Film Lithium Batteries with Stable Thin-Film Li3PO4 Solid Electrolytes Fabricated by ArF Excimer Laser Deposition
Characterization of Thin-Film Lithium Batteries with Stable Thin-Film Li3PO4 Solid Electrolytes Fabricated by ArF Excimer Laser Deposition
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DOI：
10.1149/1.3306339
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发表时间：
2010-01-01
影响因子：
3.9
通讯作者：
Kawamura, Junichi
中科院分区：
文献类型：
--
作者：
Kuwata, Naoaki;Iwagami, Naoya;Kawamura, Junichi
采用脉冲激光沉积法（PLD）制备了高质量的Li 3 PO 4薄膜，用作薄膜电池的固体电解质。对Li 3 PO 4薄膜的结构、组成、离子导电性和电化学稳定性进行了表征。Li 3 PO 4膜表现出单一的锂离子导体，在25 ℃下的离子电导率为4.0 × 10（-7）S cm（-1），活化能为0.58 eV。Li 3 PO 4薄膜在0 ~ 4.7 V（相对于Li/Li+）的电位范围内电化学稳定。采用PLD法生长的Li 3 PO 4薄膜制备了全固态薄膜电池Li/Li 3 PO 4/LiCoO 2。该薄膜电池在3.0 ~ 4.4V电位范围内具有良好的插层性能和长期循环稳定性。
High quality Li3PO4 thin films have been prepared by pulsed laser deposition (PLD) as a solid electrolyte for thin-film batteries. The structure, composition, ionic conductivity, and electrochemical stability of the Li3PO4 thin films have been characterized. The Li3PO4 film exhibits a single lithium-ion conductor with an ionic conductivity of 4.0x10(-7) S cm(-1) at 25 degrees C and an activation energy of 0.58 eV. The Li3PO4 film is electrochemically stable in the potential range from 0 to 4.7 V vs Li/Li+. All-solid-state thin-film batteries, Li/Li3PO4/LiCoO2, have been fabricated by using PLD-grown Li3PO4 thin film. The thin-film battery shows excellent intercalation property and stability for long-term cycling in the potential range from 3.0 to 4.4 V.