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Chemical Interplay of Silicon and Graphite in a Composite Electrode in SEI Formation

Journal Article · · ACS Applied Materials and Interfaces
In this study, we investigated the effect of the Si/graphite weight ratio in half-cells on the solid electrolyte interphase (SEI) layer's chemistry. The nominal concentrations of active materials were (wt % Si/wt % Gr) 15/73, 30/58, 60/28, and 80/0. The electrolyte in the cells consisted of either 1.2 M LiPF6 in ethylene carbonate/ethyl methyl carbonate (3:7 by wt) or 1.2 M LiPF6 in ethylene carbonate:ethyl methyl carbonate (3:7 by wt) + 10 wt % fluoroethylene carbonate. These coin cells were cycled five times at the C/10 rate. As expected, the addition of silicon to the electrode significantly increased the measured capacity. Examination of the aged composite material showed that the electrolyte influenced the concentration of chemical environments on the surface. Depth profiling revealed that these concentrations of surface environments changed with sputtering time. A statistics-of-mixtures model was used to deconvolute how silicon and graphite interacted during the formation of these species and how the interaction changed with depth.
Research Organization:
Argonne National Laboratory (ANL); Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1878228
Journal Information:
ACS Applied Materials and Interfaces, Journal Name: ACS Applied Materials and Interfaces Journal Issue: 47 Vol. 13; ISSN 1944-8244
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (38)

25th Anniversary Article: Understanding the Lithiation of Silicon and Other Alloying Anodes for Lithium-Ion Batteries journal August 2013
Silicon-Based Nanomaterials for Lithium-Ion Batteries: A Review journal October 2013
Operando Quantification of (De)Lithiation Behavior of Silicon-Graphite Blended Electrodes for Lithium-Ion Batteries journal January 2019
Integration of Graphite and Silicon Anodes for the Commercialization of High‐Energy Lithium‐Ion Batteries journal January 2020
Understanding Component‐Specific Contributions and Internal Dynamics in Silicon/Graphite Blended Electrodes for High‐Energy Lithium‐Ion Batteries journal October 2021
Surface film formation on a graphite electrode in Li-ion batteries: AFM and XPS study journal January 2005
Filming mechanism of lithium-carbon anodes in organic and inorganic electrolytes journal April 1995
A short review of failure mechanisms of lithium metal and lithiated graphite anodes in liquid electrolyte solutions journal June 2002
XPS studies of graphite electrode materials for lithium ion batteries journal October 2000
Review of selected electrode–solution interactions which determine the performance of Li and Li ion batteries journal August 2000
Recent studies on the correlation between surface chemistry, morphology, three-dimensional structures and performance of Li and Li-C intercalation anodes in several important electrolyte systems journal September 1997
Comparative study of the solid electrolyte interphase on graphite in full Li-ion battery cells using X-ray photoelectron spectroscopy, secondary ion mass spectrometry, and electron microscopy journal February 2013
Calendar-life versus cycle-life aging of lithium-ion cells with silicon-graphite composite electrodes journal August 2018
Electrochemistry and morphology of graphite negative electrodes containing silicon as capacity-enhancing electrode additive journal October 2019
Modelling capacity fade in silicon-graphite composite electrodes for lithium-ion batteries journal May 2021
Generation and Evolution of the Solid Electrolyte Interphase of Lithium-Ion Batteries journal October 2019
Nano- and bulk-silicon-based insertion anodes for lithium-ion secondary cells journal January 2007
High capacity graphite–silicon composite anode material for lithium-ion batteries journal March 2011
Quantifying capacity loss due to solid-electrolyte-interphase layer formation on silicon negative electrodes in lithium-ion batteries journal October 2012
Mass Spectrometry Investigations on Electrolyte Degradation Products for the Development of Nanocomposite Electrodes in Lithium Ion Batteries journal June 2006
Cycling Behavior of Silicon-Containing Graphite Electrodes, Part A: Effect of the Lithiation Protocol journal August 2017
Capacity Fade and Its Mitigation in Li-Ion Cells with Silicon-Graphite Electrodes journal September 2017
Electrode–Electrolyte Interface in Li-Ion Batteries: Current Understanding and New Insights journal October 2015
Chemical Evolution in Silicon–Graphite Composite Anodes Investigated by Vibrational Spectroscopy journal May 2018
Nano/Microstructured Silicon–Graphite Composite Anode for High-Energy-Density Li-Ion Battery journal February 2019
Elimination of Fluorination: The Influence of Fluorine-Free Electrolytes on the Performance of LiNi 1/3 Mn 1/3 Co 1/3 O 2 /Silicon–Graphite Li-Ion Battery Cells journal June 2020
Principles and procedures of exploratory data analysis. journal January 1997
Interplay between electrochemical reactions and mechanical responses in silicon–graphite anodes and its impact on degradation journal May 2021
Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries journal October 2018
An XPS/AES comparative study of the surface behaviour of nano-silicon anodes for Li-ion batteries journal January 2014
Capacity fade in high energy silicon-graphite electrodes for lithium-ion batteries journal January 2018
Fracture of crystalline silicon nanopillars during electrochemical lithium insertion journal February 2012
Robust regression using iteratively reweighted least-squares journal January 1977
Experiments with Mixtures journal July 1958
The Simplex‐Centroid Design for Experiments with Mixtures journal July 1963
Structural Changes in Silicon Anodes during Lithium Insertion/Extraction journal January 2004
A Comparative Study of Synthetic Graphite and Li Electrodes in Electrolyte Solutions Based on Ethylene Carbonate-Dimethyl Carbonate Mixtures journal January 1996
Evaluation Residual Moisture in Lithium-Ion Battery Electrodes and Its Effect on Electrode Performance journal January 2016

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