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Title: Parasitic Reactions in Nanosized Silicon Anodes for Lithium-Ion Batteries

Journal Article · · Nano Letters

When designing nano-Si electrodes for lithium-ion batteries, the detrimental effect of the c-Li15Si4 phase formed upon full lithiation is often a concern. In this study, Si nanoparticles with controlled particle sizes and morphology were synthesized and parasitic reactions of the metastable c-Li15Si4 phase with the non-aqueous electrolyte was investigated. The use of smaller Si nanoparticles (~ 60 nm) and the addition of fluoroethylene carbonate additive played decisive roles in the parasitic reactions such that the c-Li15Si4 phase could disappear at the end of lithiation. This suppression of c-Li15Si4 improved cycle life of the nano-Si electrodes but with a little loss of specific capacity. Also the characteristic c-Li15Si4 peak in the dQ/dV plots can be used as an early-stage indicator to cell capacity fade during cycling. Lastly, our findings can contribute to the design guidelines of Si electrodes and allow us to quantify another factor to the performance of the Si electrodes.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1372062
Journal Information:
Nano Letters, Vol. 17, Issue 3; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 102 works
Citation information provided by
Web of Science

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Cited By (15)

Engineering of carbon and other protective coating layers for stabilizing silicon anode materials journal October 2019
Solid-State Lithium/Selenium-Sulfur Chemistry Enabled via a Robust Solid-Electrolyte Interphase journal November 2018
Silica/Carbon Composites with Controllable Nanostructure from a Facile One‐Step Method for Lithium‐Ion Batteries Application journal January 2019
Graphit‐ und‐Silicium‐Anoden für Lithiumionen‐ Hochenergiebatterien journal October 2019
Boosting Superior Lithium Storage Performance of Alloy‐Based Anode Materials via Ultraconformal Sb Coating–Derived Favorable Solid‐Electrolyte Interphase journal December 2019
Energy storage: The future enabled by nanomaterials journal November 2019
Towards high energy density lithium battery anodes: silicon and lithium journal January 2019
Silicon Nanoparticles Confined in Thin Carbon Network: The Free-Standing Anode of Lithium Ion Batteries with High Performance and Easy Recyclability journal January 2019
Tin nanoparticles embedded in an N-doped microporous carbon matrix derived from ZIF-8 as an anode for ultralong-life and ultrahigh-rate lithium-ion batteries journal January 2019
Dimensionally Designed Carbon-Silicon Hybrids for Lithium Storage journal November 2018
Silicon Nanoparticles Preparation by Induction Plasma Technology for Li-ion Batteries Anode Material journal November 2019
The Electrochemical Performance of Silicon Nanoparticles in Concentrated Electrolyte journal May 2018
Integration of Graphite and Silicon Anodes for the Commercialization of High‐Energy Lithium‐Ion Batteries journal January 2020
Scallop-Inspired Shell Engineering of Microparticles for Stable and High Volumetric Capacity Battery Anodes journal May 2018
A facile method to fabricate a porous Si/C composite with excellent cycling stability for use as the anode in a lithium ion battery journal January 2019

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