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Title: In Situ Electrochemical Transmission Electron Microscopy for Battery Research

The recent development of in situ liquid stages for (scanning) transmission electron microscopes now makes it possible for us to study the details of electrochemical processes under operando conditions. As electrochemical processes are complex, care must be taken to calibrate the system before any in situ/operando observations. In addition, as the electron beam can cause effects that look similar to electrochemical processes at the electrolyte/electrode interface, an understanding of the role of the electron beam in modifying the operando observations must also be understood. In this paper we describe the design, assembly, and operation of an in situ electrochemical cell, paying particular attention to the method for controlling and quantifying the experimental parameters. The use of this system is then demonstrated for the lithiation/delithiation of silicon nanowires.
Authors:
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Publication Date:
OSTI Identifier:
1158995
Report Number(s):
PNNL-SA-101383
30203; KC0208010
DOE Contract Number:
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Microscopy and Microanalysis, 20(2):484-492
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
In situ liquid ec-TEM; assembly of in situ liquid electrochemical TEM cell; Li-ion battery; Si anode; Si nanowire lithiation; Environmental Molecular Sciences Laboratory