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Title: Operando Freezing Cryogenic Electron Microscopy of Active Battery Materials

Journal Article · · Microscopy and Microanalysis

Abstract Understanding structural and chemical evolution of battery materials during operation is critical to achieving safe, efficient, and long-lasting energy storage. Cryogenic electron microscopy (cryo-EM) has become a valuable tool in battery characterization, leveraging low temperatures to improve stability of sensitive materials under electron beam irradiation. However, typical cryo-EM sample preparations leave extended time between the electrochemical point of interest and ex situ freezing of samples, during which active structures may relax, degrade, or otherwise evolve. Here, we detail a method for operando freezing cryo-EM to preserve and characterize native electrode and interfacial structures that arise during battery cycling, based on an operando plunge freezer and cold sample removal process. We validate the method on multiple electrode materials and quantify and discuss the freezing rate achieved. Operando freezing cryo-EM can be used to directly visualize transient features that arise at active electrochemical interfaces, to enable deeper understanding of structural evolution and interfacial chemistry in batteries and other electrochemical systems.

Sponsoring Organization:
USDOE
Grant/Contract Number:
89233218CNA000001; NA0003525
OSTI ID:
2459368
Journal Information:
Microscopy and Microanalysis, Journal Name: Microscopy and Microanalysis Journal Issue: 5 Vol. 30; ISSN 1431-9276
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United States
Language:
English

References (27)

Cryo-electron microscopy of vitrified chromosomes in situ. journal June 1986
Cryo‐Electron Microscopy for Unveiling the Sensitive Battery Materials journal September 2021
Cryogenic Electron Microscopy for Characterizing and Diagnosing Batteries journal November 2018
In Situ Transmission Electron Microscopy for Energy Applications journal January 2019
Unveiling the Stable Nature of the Solid Electrolyte Interphase between Lithium Metal and LiPON via Cryogenic Electron Microscopy journal November 2020
Dynamic Structure and Chemistry of the Silicon Solid-Electrolyte Interphase Visualized by Cryogenic Electron Microscopy journal November 2019
In Situ STEM-EELS Observation of Nanoscale Interfacial Phenomena in All-Solid-State Batteries journal May 2016
New Insights on the Structure of Electrochemically Deposited Lithium Metal and Its Solid Electrolyte Interphases via Cryogenic TEM journal November 2017
In Situ Electron Diffraction Tomography Using a Liquid-Electrochemical Transmission Electron Microscopy Cell for Crystal Structure Determination of Cathode Materials for Li-Ion batteries journal September 2018
SiO 2 Is Wasted Space in Single-Nanometer-Scale Silicon Nanoparticle-Based Composite Anodes for Li-Ion Electrochemical Energy Storage journal November 2020
Structure and Solution Dynamics of Lithium Methyl Carbonate as a Protective Layer For Lithium Metal journal April 2018
Cryogenic Laser Ablation Reveals Short-Circuit Mechanism in Lithium Metal Batteries journal May 2021
Ion Depletion Microenvironments Mapped at Active Electrochemical Interfaces with Operando Freezing Cryo-Electron Microscopy journal May 2024
Identifying the Structural Basis for the Increased Stability of the Solid Electrolyte Interphase Formed on Silicon with the Additive Fluoroethylene Carbonate journal October 2017
Cryo-Electron Microscopy of Block Copolymers in an Organic Solvent journal October 1995
Preparation of macromolecular complexes for cryo-electron microscopy journal December 2007
SARS-CoV-2 structure and replication characterized by in situ cryo-electron tomography journal November 2020
In-situ visualization of the space-charge-layer effect on interfacial lithium-ion transport in all-solid-state batteries journal November 2020
Characterization of the structure and chemistry of the solid–electrolyte interface by cryo-EM leads to high-performance solid-state Li-metal batteries journal June 2022
Cryo-STEM mapping of solid–liquid interfaces and dendrites in lithium-metal batteries journal August 2018
A mechanistic study of electrode materials for rechargeable batteries beyond lithium ions byin situtransmission electron microscopy journal January 2021
Control of nanoparticle dispersion, SEI composition, and electrode morphology enables long cycle life in high silicon content nanoparticle-based composite anodes for lithium-ion batteries journal January 2023
Elucidating the assembled structure of amphiphiles in solution via cryogenic transmission electron microscopy journal January 2007
Atomic structure of sensitive battery materials and interfaces revealed by cryo–electron microscopy journal October 2017
Capturing the swelling of solid-electrolyte interphase in lithium metal batteries journal January 2022
Liquid-Solid Phase Diagrams of Binary Carbonates for Lithium Batteries journal January 2000
Understanding solution processing of inorganic materials using cryo-EM journal December 2019