Electrochemical Measurements in In Situ TEM Experiments
Electrochemical Measurements in In Situ TEM Experiments
复制标题
DOI：
10.1149/2.1041706jes
复制
发表时间：
2017-01-01
影响因子：
3.9
通讯作者：
Maldonado, Stephen
中科院分区：
文献类型：
--
作者：
Fahrenkrug, Eli;Alsem, Daan Hein;Maldonado, Stephen
本文报道了在透射电子显微镜（TEM）中进行原位电分析时测量误差的潜在来源。确定了影响噪声的实验装置的一些相关方面。提出了接地回路的可能性和减少接地回路的建议。本文论证并讨论了在瞬变电磁法中电子束的存在所引起的工作电极开路电位的偏移。这项工作还强调了当电极暴露于电解质的面积明显大于光束照明面积时，错误电位测量的可能性。提出了通用设计准则，以协助未来的电化学电池设计，以减轻TEM内的电化学测量伪影。(C)作者2017。由ECS出版。版权所有。
Potential sources of measurement error in electroanalytical analyses performed in-situ within a transmission electron microscope (TEM) are reported. Some relevant aspects of experimental set-up that impact noise are identified. The possibility of ground loops and recommendations that minimize them are presented. Offsets in the measured open circuit potential of working electrodes caused by the presence of the electron beam in TEM are demonstrated and discussed. This work also highlights the possibility of erroneous potential measurements when the electrode area exposed to electrolyte is significantly larger than the beam illumination area. General design criteria are proposed to assist in future electrochemical cell designs to mitigate electrochemical measurement artifacts inside a TEM. (C) The Author(s) 2017. Published by ECS. All rights reserved.