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

Title: 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 Article · · Journal of Materials Chemistry. A
DOI:https://doi.org/10.1039/D2TA08935A· OSTI ID:1924591

Striking a balance between high theoretical capacity, earth abundance, and compatibility with existing manufacturing infrastructure, silicon is one of the few materials that meet the requirements for a next-generation anode for rechargeable lithium-ion batteries. Due to complications with extreme volume changes during charging/discharging and reactive interfacial chemistries, the cycle life of silicon-based composite anodes is unacceptable for broad use. Developing a majority silicon composite anode formulation that overcomes these challenges and is compatible with current industrial manufacturing practices requires materials and chemical engineering solutions that account for both electrode morphology and interfacial chemistry. Here, we synthesize surface-functionalized silicon nanocrystals that enable a highly dispersed and homogeneous slurry that can easily be integrated into a standard electrode fabrication process. We use this formulation to fabricate a 76 wt% silicon composite electrode. We show that the contents and the morphology of the silicon electrolyte interphase – a determining factor for the cycle life of silicon-based anodes – can be controlled with a post-synthetic thermal curing procedure. The curing process removes the organic surface functional groups used initially to enable dispersion in the slurry. Removing the organic surface coating reduces the cell impedance, improves the silicon utilization for lithium storage, and boosts the coulombic efficiency to values > 99.9% when electrochemically cycled. When paired with a capacity-matched lithium nickel manganese cobalt oxide LiNi0.8Mn0.1Co0.1O2 cathode, the cell retains 72% of its capacity after 1000 charge/discharge cycles while delivering an initial anode specific capacity of nearly 1000 mA h g-1 and an areal capacity of 2.55 mA h cm-2.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO); USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1924591
Alternate ID(s):
OSTI ID: 1959951
Report Number(s):
NREL/JA-5900-82857; JMCAET
Journal Information:
Journal of Materials Chemistry. A, Journal Name: Journal of Materials Chemistry. A Vol. 11 Journal Issue: 10; ISSN 2050-7488
Publisher:
Royal Society of Chemistry (RSC)Copyright Statement
Country of Publication:
United Kingdom
Language:
English

References (58)

Conveying Advanced Li-ion Battery Materials into Practice The Impact of Electrode Slurry Preparation Skills journal July 2016
Intrinsic Properties of Individual Inorganic Silicon–Electrolyte Interphase Constituents journal November 2019
Chemistry of Electrolyte Reduction on Lithium Silicide journal May 2019
Evolution of solid electrolyte interphase and active material in the silicon wafer model system journal January 2021
Enhanced Interfacial Stability of Si Anodes for Li-Ion Batteries via Surface SiO 2 Coating journal August 2020
Probing the Evolution of Surface Chemistry at the Silicon–Electrolyte Interphase via In Situ Surface-Enhanced Raman Spectroscopy journal December 2019
Silicon-Based Anodes for Lithium-Ion Batteries: From Fundamentals to Practical Applications journal January 2018
Regulating electrodeposition morphology of lithium: towards commercially relevant secondary Li metal batteries journal January 2020
Electrochemical Reaction of Lithium with Nanostructured Silicon Anodes: A Study by In-Situ Synchrotron X-Ray Diffraction and Electron Energy-Loss Spectroscopy journal August 2013
Mechanical studies of the solid electrolyte interphase on anodes in lithium and lithium ion batteries journal September 2021
Half-Cell Cumulative Efficiency Forecasts Full-Cell Capacity Retention in Lithium-Ion Batteries journal February 2021
Poly(ethylene oxide)-based electrolytes for lithium-ion batteries journal January 2015
Review on Polymer-Based Composite Electrolytes for Lithium Batteries journal August 2019
A review of the multiscale mechanics of silicon electrodes in high-capacity lithium-ion batteries journal October 2021
Intrinsic chemical reactivity of solid-electrolyte interphase components in silicon–lithium alloy anode batteries probed by FTIR spectroscopy journal January 2020
Thermal characterization of poly(acrylic acid) journal January 1987
Critical Review on Low‐Temperature Li‐Ion/Metal Batteries journal February 2022
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
Impacts of lean electrolyte on cycle life for rechargeable Li metal batteries journal December 2018
Silicon based lithium-ion battery anodes: A chronicle perspective review journal January 2017
Temperature-Dependent Solubility of Solid Electrolyte Interphase on Silicon Electrodes journal October 2019
Suppressing Auger Recombination in Multiply Excited Colloidal Silicon Nanocrystals with Ligand-Induced Hole Traps journal January 2021
Tailoring the Surface of Silicon Nanoparticles for Enhanced Chemical and Electrochemical Stability for Li-Ion Batteries journal August 2019
Hydrophobic versus Hydrophilic Interfacial Coatings on Silicon Nanoparticles Teach Us How to Design the Solid Electrolyte Interphase in Silicon-Based Li-Ion Battery Anodes journal February 2021
Electrolytes and Interphases in Li-Ion Batteries and Beyond journal October 2014
Microscopic Observation of Solid Electrolyte Interphase Bilayer Inversion on Silicon Oxide journal October 2020
Nanoscale silicon as anode for Li-ion batteries: The fundamentals, promises, and challenges journal October 2015
Electrochemically-driven solid-state amorphization in lithium-silicon alloys and implications for lithium storage journal February 2003
Effect of Water Concentration in LiPF 6 -Based Electrolytes on the Formation, Evolution, and Properties of the Solid Electrolyte Interphase on Si Anodes journal October 2020
Impact of Silicon/Graphite Composite Electrode Porosity on the Cycle Life of 18650 Lithium-Ion Cell journal December 2020
A review of the features and analyses of the solid electrolyte interphase in Li-ion batteries journal September 2010
Calendar aging of silicon-containing batteries journal September 2021
Review on modeling of the anode solid electrolyte interphase (SEI) for lithium-ion batteries journal March 2018
Rechargeable Li[sub 1+x]Mn[sub 2]O[sub 4]∕Carbon Cells with a New Electrolyte Composition journal January 1993
Evaluating the roles of electrolyte components on the passivation of silicon anodes journal March 2022
Nonpassivated Silicon Anode Surface journal May 2020
Advances of polymer binders for silicon‐based anodes in high energy density lithium‐ion batteries journal March 2021
Identifying the Structural Basis for the Increased Stability of the Solid Electrolyte Interphase Formed on Silicon with the Additive Fluoroethylene Carbonate journal October 2017
Silicon‐Based Lithium Ion Battery Systems: State‐of‐the‐Art from Half and Full Cell Viewpoint journal June 2021
Recent progress of silicon composites as anode materials for secondary batteries journal January 2016
Probing Electrolyte Solvents at Solid/Liquid Interface Using Gap-Mode Surface-Enhanced Raman Spectroscopy journal January 2019
Frontiers in Theoretical Analysis of Solid Electrolyte Interphase Formation Mechanism journal August 2021
Organometallic Chemistry on Silicon and Germanium Surfaces journal May 2002
Developing high safety Li-metal anodes for future high-energy Li-metal batteries: strategies and perspectives journal January 2020
Development of carbon conductive additives for advanced lithium ion batteries journal April 2011
Tuning Confinement in Colloidal Silicon Nanocrystals with Saturated Surface Ligands journal April 2018
Size-Dependent Fracture of Silicon Nanoparticles During Lithiation journal January 2012
Effect of Porosity, Thickness and Tortuosity on Capacity Fade of Anode journal January 2015
Alloy Negative Electrodes for Li-Ion Batteries journal October 2014
Intrinsic Chemical Reactivity of Silicon Electrode Materials: Gas Evolution journal March 2020
Challenges and Recent Progress in the Development of Si Anodes for Lithium-Ion Battery journal September 2017
Key functional groups defining the formation of Si anode solid-electrolyte interphase towards high energy density Li-ion batteries journal March 2020
Investigating the Chemical Reactivity of Lithium Silicate Model SEI Layers journal March 2020
Review—SEI: Past, Present and Future journal January 2017
Recent Research Progress of Silicon‐Based Anode Materials for Lithium‐Ion Batteries journal May 2022
Silyl Radical Abstraction in the Functionalization of Plasma-Synthesized Silicon Nanocrystals journal September 2015
The interplay between solid electrolyte interface (SEI) and dendritic lithium growth journal October 2017