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Title: Observation and Quantification of Nanoscale Processes in Lithium Batteries by Operando Electrochemical (S)TEM

Abstract

An operando electrochemical stage for the transmission electron microscope has been configured to form a “Li battery” that is used to quantify the electrochemical processes that occur at the anode during charge/discharge cycling. Of particular importance for these observations is the identification of an image contrast reversal that originates from solid Li being less dense than the surrounding liquid electrolyte and electrode surface. This contrast allows Li to be identified from Li containing compounds that make up the solid-electrolyte interphase (SEI) layer. By correlating images showing the sequence of Li electrodeposition and the evolution of the SEI layer with simultaneously acquired and calibrated cyclic voltammograms (CV), electrodeposition and electrolyte breakdown processes can be quantified directly on the nanoscale. This approach opens up intriguing new possibilities to rapidly visualize and test the electrochemical performance of a wide range of electrode/electrolyte combinations for next generation battery systems.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1184939
Report Number(s):
PNNL-SA-107504
48681; KC0208010
DOE Contract Number:
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nano Letters, 15(3):2168-2176
Country of Publication:
United States
Language:
English
Subject:
Operando Scanning Transmission Electron Microscopy; SEI Layer; in-situ electrochemical liquid cell; Li Batteries; Li dendrite formation; Li deposition/dissolution; Environmental Molecular Sciences Laboratory

Citation Formats

Mehdi, Beata L., Qian, Jiangfeng, Nasybulin, Eduard, Park, Chiwoo, Welch, David A., Faller, Roland, Mehta, Hardeep S., Henderson, Wesley A., Xu, Wu, Wang, Chong M., Evans, James E., Liu, Jun, Zhang, Jiguang, Mueller, Karl T., and Browning, Nigel D.. Observation and Quantification of Nanoscale Processes in Lithium Batteries by Operando Electrochemical (S)TEM. United States: N. p., 2015. Web. doi:10.1021/acs.nanolett.5b00175.
Mehdi, Beata L., Qian, Jiangfeng, Nasybulin, Eduard, Park, Chiwoo, Welch, David A., Faller, Roland, Mehta, Hardeep S., Henderson, Wesley A., Xu, Wu, Wang, Chong M., Evans, James E., Liu, Jun, Zhang, Jiguang, Mueller, Karl T., & Browning, Nigel D.. Observation and Quantification of Nanoscale Processes in Lithium Batteries by Operando Electrochemical (S)TEM. United States. doi:10.1021/acs.nanolett.5b00175.
Mehdi, Beata L., Qian, Jiangfeng, Nasybulin, Eduard, Park, Chiwoo, Welch, David A., Faller, Roland, Mehta, Hardeep S., Henderson, Wesley A., Xu, Wu, Wang, Chong M., Evans, James E., Liu, Jun, Zhang, Jiguang, Mueller, Karl T., and Browning, Nigel D.. Wed . "Observation and Quantification of Nanoscale Processes in Lithium Batteries by Operando Electrochemical (S)TEM". United States. doi:10.1021/acs.nanolett.5b00175.
@article{osti_1184939,
title = {Observation and Quantification of Nanoscale Processes in Lithium Batteries by Operando Electrochemical (S)TEM},
author = {Mehdi, Beata L. and Qian, Jiangfeng and Nasybulin, Eduard and Park, Chiwoo and Welch, David A. and Faller, Roland and Mehta, Hardeep S. and Henderson, Wesley A. and Xu, Wu and Wang, Chong M. and Evans, James E. and Liu, Jun and Zhang, Jiguang and Mueller, Karl T. and Browning, Nigel D.},
abstractNote = {An operando electrochemical stage for the transmission electron microscope has been configured to form a “Li battery” that is used to quantify the electrochemical processes that occur at the anode during charge/discharge cycling. Of particular importance for these observations is the identification of an image contrast reversal that originates from solid Li being less dense than the surrounding liquid electrolyte and electrode surface. This contrast allows Li to be identified from Li containing compounds that make up the solid-electrolyte interphase (SEI) layer. By correlating images showing the sequence of Li electrodeposition and the evolution of the SEI layer with simultaneously acquired and calibrated cyclic voltammograms (CV), electrodeposition and electrolyte breakdown processes can be quantified directly on the nanoscale. This approach opens up intriguing new possibilities to rapidly visualize and test the electrochemical performance of a wide range of electrode/electrolyte combinations for next generation battery systems.},
doi = {10.1021/acs.nanolett.5b00175},
journal = {Nano Letters, 15(3):2168-2176},
number = ,
volume = ,
place = {United States},
year = {Wed Mar 11 00:00:00 EDT 2015},
month = {Wed Mar 11 00:00:00 EDT 2015}
}