skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Phase Boundary Propagation in Li-Alloying Battery Electrodes Revealed by Liquid-Cell Transmission Electron Microscopy

Journal Article · · ACS Nano

Battery cycle life is directly influenced by the microstructural changes occurring in the electrodes during charge and discharge cycles. In this study, we image in situ the nanoscale phase evolution in negative electrode materials for Li-ion batteries using a fully enclosed liquid cell in a transmission electron microscope (TEM) to reveal early degradation that is not evident in the charge–discharge curves. To compare the electrochemical phase transformation behavior between three model materials, thin films of amorphous Si, crystalline Al, and crystalline Au were lithiated and delithiated at controlled rates while immersed in a commercial liquid electrolyte. This method allowed for the direct observation of lithiation mechanisms in nanoscale negative electrodes, revealing that a simplistic model of a surface-to-interior lithiation front is insufficient. For the crystalline films, a lithiation front spread laterally from a few initial nucleation points, with continued grain nucleation along the growing interface. The intermediate lithiated phases were identified using electron diffraction, and high-resolution postmortem imaging revealed the details of the final microstructure. Lastly, our results show that electrochemically induced solid–solid phase transformations can lead to highly concentrated stresses at the laterally propagating phase boundary which should be considered for future designs of nanostructured electrodes for Li-ion batteries.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Energy Frontier Research Centers (EFRC) (United States). Nanostructures for Electrical Energy Storage (NEES)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC04-94AL85000; SC0001160
OSTI ID:
1265168
Report Number(s):
SAND2016-6066J; 644958
Journal Information:
ACS Nano, Vol. 10, Issue 6; ISSN 1936-0851
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 50 works
Citation information provided by
Web of Science

References (38)

Alloy Negative Electrodes for Li-Ion Batteries journal October 2014
Spontaneous evolution of bicontinuous nanostructures in dealloyed Li-based systems journal August 2013
Evolution of nanoporosity in dealloying journal March 2001
Materials science principles related to alloys of potential use in rechargeable lithium cells journal May 1989
25th Anniversary Article: Understanding the Lithiation of Silicon and Other Alloying Anodes for Lithium-Ion Batteries journal August 2013
Theory of Coherent Nucleation in Phase-Separating Nanoparticles journal May 2013
The thermodynamic origin of hysteresis in insertion batteries journal April 2010
Phase Transformation Dynamics in Porous Battery Electrodes journal November 2014
Intercalation Pathway in Many-Particle LiFePO 4 Electrode Revealed by Nanoscale State-of-Charge Mapping journal February 2013
A Sealed Liquid Cell for In Situ Transmission Electron Microscopy of Controlled Electrochemical Processes journal August 2015
Lithium Electrodeposition Dynamics in Aprotic Electrolyte Observed in Situ via Transmission Electron Microscopy journal February 2015
In situ TEM electrochemistry of anode materials in lithium ion batteries journal January 2011
Demonstration of an Electrochemical Liquid Cell for Operando Transmission Electron Microscopy Observation of the Lithiation/Delithiation Behavior of Si Nanowire Battery Anodes journal November 2013
Morphological changes in and around Sn electrodes during Li ion cycling characterized by in situ environmental TEM journal November 2013
On the origin of the capacity fading for aluminium negative electrodes in Li-ion batteries journal December 2014
Electrochemical formation of lithium-aluminium alloys in propylene carbonate electrolytes journal April 1981
Size Effects in the Electrochemical Alloying and Cycling of Electrodeposited Aluminum with Lithium journal January 2012
Lithiation and Delithiation Mechanisms of Gold Thin Film Model Anodes for Lithium Ion Batteries: Electrochemical Characterization journal May 2015
Transmission Electron Microscopy book January 2009
First Principles Model of Amorphous Silicon Lithiation journal January 2009
Two-Phase Electrochemical Lithiation in Amorphous Silicon journal January 2013
The Al−Li (Aluminum−Lithium) system journal September 1982
In Situ Transmission Electron Microscopy Observation of Pulverization of Aluminum Nanowires and Evolution of the Thin Surface Al 2 O 3 Layers during Lithiation–Delithiation Cycles journal October 2011
A pomegranate-inspired nanoscale design for large-volume-change lithium battery anodes journal February 2014
High-rate aluminium yolk-shell nanoparticle anode for Li-ion battery with long cycle life and ultrahigh capacity journal August 2015
Electrochemical behavior and passivation of current collectors in lithium-ion batteries journal January 2011
Reversible Nanopore Formation in Ge Nanowires during Lithiation–Delithiation Cycling: An In Situ Transmission Electron Microscopy Study journal September 2011
The Au−Li (Gold-Lithium) system journal June 1986
Direct in situ measurements of Li transport in Li-ion battery negative electrodes journal January 2010
Direct In Situ Observation and Numerical Simulations of Non-Shrinking-Core Behavior in an MCMB Graphite Composite Electrode journal January 2012
Deformation, Stress State, and Thermodynamic Force for a Transforming Spherical Inclusion in an Elastic-Plastic Material journal February 2000
Mechanical-energy influences to electrochemical phenomena in lithium-ion batteries journal January 2011
Large Plastic Deformation in High-Capacity Lithium-Ion Batteries Caused by Charge and Discharge: Large Plastic Deformation in Lithium-Ion Batteries journal March 2011
Stochastic Analysis of Diffusion Induced Damage in Lithium-Ion Battery Electrodes journal January 2013
Plastic deformation associated with phase transformations during lithiation/delithiation of Sn journal December 2014
Nanoscale Imaging of Lithium Ion Distribution During In Situ Operation of Battery Electrode and Electrolyte journal February 2014
In Situ Study of Lithiation and Delithiation of MoS 2 Nanosheets Using Electrochemical Liquid Cell Transmission Electron Microscopy journal July 2015
Probing the Degradation Mechanisms in Electrolyte Solutions for Li-Ion Batteries by in Situ Transmission Electron Microscopy journal February 2014

Cited By (12)

In Situ Transmission Electron Microscopy for Energy Materials and Devices journal June 2019
Review of Recent Development of In Situ/Operando Characterization Techniques for Lithium Battery Research journal May 2019
Current Status of Liquid-cell Transmission Electron Microscopy journal December 2019
Review—Promises and Challenges of In Situ Transmission Electron Microscopy Electrochemical Techniques in the Studies of Lithium Ion Batteries journal January 2017
Understanding materials challenges for rechargeable ion batteries with in situ transmission electron microscopy journal August 2017
In Situ Transmission Electron Microscopy Studies of Electrochemical Reaction Mechanisms in Rechargeable Batteries journal June 2019
Real-time monitoring of stress development during electrochemical cycling of electrode materials for Li-ion batteries: overview and perspectives journal January 2019
Using in situ and operando methods to characterize phase changes in charged lithium nickel cobalt aluminum oxide cathode materials journal January 2020
Operando Observations of SEI Film Evolution by Mass‐Sensitive Scanning Transmission Electron Microscopy journal October 2019
Effects of residual stress on overpotentials and mechanical integrity during electrochemical Li-alloying of Al film electrodes journal February 2017
Advanced Transmission Electron Microscopy for Electrode and Solid-Electrolyte Materials in Lithium-Ion Batteries journal June 2018
Cryogenic specimens for nanoscale characterization of solid–liquid interfaces journal December 2019

Similar Records

Self-Assembled Framework Formed During Lithiation of SnS2 Nanoplates Revealed by in Situ Electron Microscopy
Journal Article · Thu Jul 06 00:00:00 EDT 2017 · Accounts of Chemical Research · OSTI ID:1265168

Insights into Reactivity of Silicon Negative Electrodes: Analysis Using Isothermal Microcalorimetry
Journal Article · Tue Sep 24 00:00:00 EDT 2019 · ACS Applied Materials and Interfaces · OSTI ID:1265168

Dimensionally Controlled Lithiation of Chromium Oxide
Journal Article · Mon Nov 23 00:00:00 EST 2015 · Chemistry of Materials · OSTI ID:1265168