A system for performing simultaneous in situ atomic force microscopy/optical microscopy measurements on electrode materials for lithium-ion batteries
A system for performing simultaneous in situ atomic force microscopy/optical microscopy measurements on electrode materials for lithium-ion batteries
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DOI：
10.1063/1.1388214
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发表时间：
2001-07
影响因子：
1.6
通讯作者：
L. Y. Beaulieu;V. K. Cumyn;K. Eberman;L. Krause;J. Dahn
中科院分区：
文献类型：
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作者：
L. Y. Beaulieu;V. K. Cumyn;K. Eberman;L. Krause;J. Dahn
一个原子力显微镜（AFM）配备了一个光学电荷耦合器件相机已被放置在一个充满氩气的手套箱的目的是研究的形态变化的电极材料，因为它们与锂反应。为了减少振动引起的噪音，AFM安装在花岗岩块上，通过柔性橡胶绳和金属弹簧的组合悬挂在手套箱的天花板上。AFM配备了一个围绕样品的环境室，然后被封闭在一个特殊构造的挡风板中，该挡风板允许在成像过程中通过纯化系统循环Ar气体。一个特殊的电化学电池被构造成容纳研究中的工作电极。当电极与锂反应许多天的时间段时，几乎没有漂移的重复成像是可能的。由该装置所作的测量的例子将给出的情况下，锂合金化与溅射沉积的Si-Sn薄膜。作为薄膜中锂含量的函数获得的光学和AFM图像被组装成时间推移的“电影”，显示样品的形态沿着相应的电化学的演变。这些电影可通过电子物理辅助出版服务（EPAPS）下载。
An atomic force microscope (AFM) equipped with an optical charge coupled device camera has been placed in an Ar filled glovebox for the purpose of studying the change in morphology of electrode materials as they react with lithium. In order to minimize noise induced by vibration, the AFM is mounted on granite blocks suspended from the ceiling of the glovebox by a combination of flexible rubber cords and metal springs. The AFM, which is equipped with an environmental chamber surrounding the sample, is then enclosed in a specially constructed draft shield that allows the circulation of Ar gas by the purification system during imaging. A special electrochemical cell was constructed to hold the working electrode under study. Repeated imaging with little drift is possible while electrodes are reacted with lithium for periods of many days. Examples of measurements made by this device will be given for the case of lithium alloying with sputter-deposited Si–Sn thin films. The optical and AFM images obtained as a function of lithium content in the films are assembled into time-lapsed “movies” showing the evolution of the morphology of the sample along with the corresponding electrochemistry. These movies are available for download through the Electronic Physics Auxiliary Publication Service (EPAPS).