EMC Abstracts

Official abstracts site for the European Microscopy Congress

MENU 
  • Home
  • Meetings Archive
    • The 16th European Microscopy Congress 2016
  • Keyword Index
  • Your Favorites
    • Favorites
    • Login
    • Register
    • View and Print All Favorites
    • Clear all your favorites
  • Advanced Search

In situ study of the degradation phenomena induced by lithiation/delithiation cycle of a composite Si-based anode by the mean of X-ray tomography

Abstract number: 6875

Session Code: MS05-OP276

DOI: 10.1002/9783527808465.EMC2016.6875

Meeting: The 16th European Microscopy Congress 2016

Session: Materials Science

Topic: Energy-related materials

Presentation Form: Oral Presentation

Corresponding Email: victor.vanpeene@emt.inrs.ca

Victor Vanpeene (1, 2), Eric Maire (2), Aurélien Etiemble (2), Lionel Roué (1), Anne Bonnin (3)

1. EMT, INRS, Varennes, Canada 2. MATEIS, INSA, Villeurbanne, France 3. LSB, PSI, Villigen, Suisse

Keywords: 3D morphology, lithium-ion Battery, Silicon anode, X-Ray tomography

In the context of increasing energy density of lithium-ion batteries, silicon is of high interest with his high theoretical gravimetric capacity, ten times higher than the commonly used carbon. However the use of silicon is faced to huge hurdles such as poor life time of those electrodes and not sufficient sustainability versus high current density (commonly used in EVs and HEVs).

The poor cycle life of Si-based electrodes is mainly due to their large volume variation upon cycling, inducing electrical disconnections and instability of the solid electrolyte interface (SEI). The study of the morphological variation of Si-based electrodes upon cycling is thus highly relevant to evaluate their degradation and to optimize their formulation and architecture. However, this is challenging considering their complex three-dimensional structure and their major evolution with cycling. Furthermore, samples are fragile and reactive and therefore difficult to prepare for bulk observations. In this context, X-ray tomography appears as an effective non-destructive and 3D observation tool.

 

In this communication, in-situ synchrotron  X-ray tomography analyses are performed on Si-based electrodes prepared from a pH3 buffered slurry of ball-milled Si powder + carbon black + carboxymethylcellulose (CMC) (80/12/8) loaded into a carbon paper (AvCarb EP40) by impregnation, in order to get a clear view of the 3D architecture of the electrode with cycling. From the initial state, represented in Fig. 1, to fully lithiated and then fully delithiated state, X-ray scans were performed each thirty minutes to continuously follow the morphological evolution of the electrode structure.

After an appropriate image reconstruction and segmentation procedure, phase identification has been achieved. Moreover the separation of a void porosity and an electrolyte phase was possible and the quantifying of the pore size distribution evolution with cycling, as shown in Fig. 2.

Also key morphological parameters of these Si-based electrodes and their evolution with cycling are determined, such as the electrode thickness and volume fraction of the pores as shown in Fig. 3. Those results may greatly enlighten the understanding of degradation phenomena in the Si-based electrodes and help develop new composite electrodes formulation for sustainable applications.

Figures:

Figure 1: X-ray attenuation imaging of the Si-based anode composite electrode (diameter = 3mm ; 1,4 mgSi/cm²) at the initial state (before lithiation) cut along thickness, recorded at the TOMCAT beamline, SLS facility (PSI)

Figure 2: 3D pore size visualization and evolution with cycling for the electrolyte phase and for the void phase (volume: 293x293x137 µm3, pixel size: 0,326µm)

Figure 3: Porosity, void and electrolyte, and volume evolution of the material phase with cycling (1,4mgSi/cm²) at i = 400 mA/gSi in LiPF6 1M EC : DMC (1 : 1)

To cite this abstract:

Victor Vanpeene, Eric Maire, Aurélien Etiemble, Lionel Roué, Anne Bonnin; In situ study of the degradation phenomena induced by lithiation/delithiation cycle of a composite Si-based anode by the mean of X-ray tomography. The 16th European Microscopy Congress, Lyon, France. https://emc-proceedings.com/abstract/in-situ-study-of-the-degradation-phenomena-induced-by-lithiationdelithiation-cycle-of-a-composite-si-based-anode-by-the-mean-of-x-ray-tomography/. Accessed: February 23, 2019
  • Tweet
  • Email
  • Print
Save to PDF

« Back to The 16th European Microscopy Congress 2016

EMC Abstracts - https://emc-proceedings.com/abstract/in-situ-study-of-the-degradation-phenomena-induced-by-lithiationdelithiation-cycle-of-a-composite-si-based-anode-by-the-mean-of-x-ray-tomography/

Most Viewed Abstracts

  • mScarlet, a novel high quantum yield (71%) monomeric red fluorescent protein with enhanced properties for FRET- and super resolution microscopy
  • 3D structure and chemical composition reconstructed simultaneously from HAADF-STEM images and EDS-STEM maps
  • Pixelated STEM detectors: opportunities and challenges
  • Crystallographic mapping in engineering alloys by scanning precession electron diffraction
  • A Compressive Sensing based acquisition design for quantitative ultra-low dose high-resolution imaging and spectroscopy in the STEM

Your Favorites

You can save and print a list of your favorite abstracts by clicking the “Favorite” button at the bottom of any abstract. View your favorites »

Visit Our Partner Sites

The 16th European Microscopy Congress

The official web site of the 16th European Microscopy Congress.

European Microscopy Society

European Microscopy Society logoThe European Microscopy Society (EMS) is committed to promoting the use and the quality of advanced microscopy in all its aspects in Europe.

International Federation of Societies for Microscopy

International Federation of Societies for Microscopy logoThe IFSM aims to contribute to the advancement of microscopy in all its aspects.

Société Française des Microscopies

Société Française des MicroscopiesThe Sfµ is a multidisciplinary society which aims to improve and spread the knowledge about Microscopy.

Connect with us

Imaging & Microscopy
Official Media Partner of the European Microscopy Society.

  • Help & Support
  • About Us
  • Cookies & Privacy
  • Wiley Job Network
  • Terms & Conditions
  • Advertisers & Agents
Copyright © 2019 John Wiley & Sons, Inc. All Rights Reserved.
Wiley
loading Cancel
Post was not sent - check your email addresses!
Email check failed, please try again
Sorry, your blog cannot share posts by email.
This site uses cookies: Find out more.