Electrochemical reaction of nanocrystalline Co3O4 thin film with lithium
Electrochemical reaction of nanocrystalline Co3O4 thin film with lithium
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DOI：
10.1016/j.ssi.2004.02.020
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发表时间：
2004-05-14
影响因子：
3.2
通讯作者：
Qin, QZ
中科院分区：
文献类型：
--
作者：
Fu, ZW;Wang, Y;Qin, QZ
采用X射线衍射、扫描电子显微镜、X射线光电子能谱、循环伏安和恒电流测试等方法研究了反应脉冲激光沉积法制备的锂和纳米Co 3 O 4薄膜的电化学反应。我们的新发现是，在纳米Co 3 O 4薄膜锂电池的第一次放电过程中，Co 3 O 4薄膜与锂反应，并形成纳米尺寸的金属Co和Li 2 O，但充电到3.0 V后，CoO代替Co 3 O 4生成，随后的放电/充电过程是可逆的。提出了纳米Co 3 O 4薄膜与锂的反应机理。(C)2004 Elsevier B. V.保留所有权利。
The electrochemical reaction of lithium and nanocrystalline Co3O4 thin films fabricated by reactive pulsed laser deposition was investigated using X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, cyclic voltammetry and galvanostatic measurements. Our new finding is that during the first discharge process of nanocrystalline Co3O4 film-based lithium cell Co3O4 thin film reacts with lithium and forms nano-sized metallic Co and Li2O, but after charging to 3.0 V CoO instead of Co3O4 is generated and the subsequent discharge/charge processes are reversible. A reaction mechanism of nanocrystalline Co3O4 thin film with lithium is proposed. (C) 2004 Elsevier B.V. All rights reserved.