Thin film lithium ion batteries prepared only by pulsed laser deposition
Thin film lithium ion batteries prepared only by pulsed laser deposition
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DOI：
10.1016/j.ssi.2006.07.023
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发表时间：
2006-10-31
影响因子：
3.2
通讯作者：
Kawamura, Junichi
中科院分区：
文献类型：
--
作者：
Kuwata, Naoaki;Kumar, Ranveer;Kawamura, Junichi
采用连续脉冲激光沉积(PLD)技术制备了由非晶态Li-V-Si-O(LVSO)固体电解液、层状岩盐LiCoO2和尖晶石相LiMn2O4正极以及非晶态SnO负极组成的全固态薄膜电池。用X射线衍射仪对阴极薄膜的晶体结构进行了表征。退火后的阴极膜呈现出特征的晶体结构，而沉积的阴极膜是非晶态或部分晶化的。退火后的薄膜表面比较粗糙。采用FE-SEM、充放电测试和循环伏安等方法对薄膜电池进行了表征。与LiCoO2一样，LiMn2O4新型正极薄膜也可用于全固态电池，并报道了它们的电化学性能。带退火阴极膜的薄膜电池的容量是沉积前薄膜的10倍。即使在液体电解液电池系统中，沉积的薄膜也表现出很低的容量。(C)2006爱思唯尔B.V.保留所有权利。
All solid-state thin film batteries consisting of an amorphous Li-V-Si-O (LVSO) solid electrolyte, layered rocksalt LiCoO2 and spinel phase LiMn2O4 cathodes, and amorphous SnO anode were fabricated only by sequential pulsed laser deposition (PLD) technique. The crystal structure of the cathode films was characterized by XRD. The post-annealed cathode films exhibit the characteristic crystal structures while as-deposited cathode films are amorphous or partially crystallized. The rough surface is observed for the post-annealed films. The thin-film battery was characterized by a FE-SEM, charge-discharge measurements and cyclic voltammetry. As well as the LiCoO2, the new cathode film of LiMn2O4 can be utilized for all-solid-state batteries, and their electrochemical properties are reported. The capacities of the thin-film batteries with annealed cathode films are 10 times larger than that of the as-deposited films. The as-deposited film shows a very low capacity even in the liquid electrolyte cell system. (c) 2006 Elsevier B.V. All rights reserved.