Tailoring the Surface of Silicon Nanoparticles for Enhanced Chemical and Electrochemical Stability for Li-Ion Batteries

Nathan Neale; Gregory Pach; Gerard Carroll; Sisi Hian; Bin Hu; Ritu Sahore; Lu Zhang; Bin Zhao; Zhengcheng Zhang; Haihua Liu

doi:10.1021/acsaem.9b01601

Tailoring the Surface of Silicon Nanoparticles for Enhanced Chemical and Electrochemical Stability for Li-Ion Batteries

Nathan Neale, Gregory Pach, Gerard Carroll, Sisi Hian, Bin Hu, Ritu Sahore, Lu Zhang, Bin Zhao, Zhengcheng Zhang, Haihua Liu

Chemistry and Nanoscience

Research output: Contribution to journal › Article › peer-review

20 Scopus Citations

Abstract

Organic monolayers of epoxy-containing oligo(ethylene oxide)s were grafted to the surface of silicon nanoparticles via a hydrosilylation reaction. The surface functional groups suppressed the chemical and electrochemical reactivity of the as-grown and lithiated silicon nanoparticles with high material utilization. A robust Si/electrolyte interphase was formed with the participation of the grafted organic groups with facilitated Li⁺ transfer and was further enforced by electrode integrity via the epoxy/poly(acrylic acid) (PAA) binder reaction. The improved cycling stability and post-test analysis indicate that surface functionalization on the Si particle level is a feasible approach to enabling a Si anode in high-energy-density lithium-ion batteries.

Original language	American English
Pages (from-to)	6176-6183
Number of pages	8
Journal	ACS Applied Energy Materials
Volume	2
Issue number	9
DOIs	https://doi.org/10.1021/acsaem.9b01601 https://doi.org/10.1021/acsaem.9b01601
State	Published - 23 Sep 2019

Bibliographical note

Publisher Copyright:
© 2019 American Chemical Society.

NREL Publication Number

NREL/JA-5900-73521

Keywords

chemical/electrochemical stability
Coulombic efficiency
cycling stability
epoxy-containing oligo(ethylene oxide)s
SEI formation
Si nanoparticles
surface functionalization

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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title = "Tailoring the Surface of Silicon Nanoparticles for Enhanced Chemical and Electrochemical Stability for Li-Ion Batteries",

abstract = "Organic monolayers of epoxy-containing oligo(ethylene oxide)s were grafted to the surface of silicon nanoparticles via a hydrosilylation reaction. The surface functional groups suppressed the chemical and electrochemical reactivity of the as-grown and lithiated silicon nanoparticles with high material utilization. A robust Si/electrolyte interphase was formed with the participation of the grafted organic groups with facilitated Li+ transfer and was further enforced by electrode integrity via the epoxy/poly(acrylic acid) (PAA) binder reaction. The improved cycling stability and post-test analysis indicate that surface functionalization on the Si particle level is a feasible approach to enabling a Si anode in high-energy-density lithium-ion batteries.",

keywords = "chemical/electrochemical stability, Coulombic efficiency, cycling stability, epoxy-containing oligo(ethylene oxide)s, SEI formation, Si nanoparticles, surface functionalization",

author = "Nathan Neale and Gregory Pach and Gerard Carroll and Sisi Hian and Bin Hu and Ritu Sahore and Lu Zhang and Bin Zhao and Zhengcheng Zhang and Haihua Liu",

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T1 - Tailoring the Surface of Silicon Nanoparticles for Enhanced Chemical and Electrochemical Stability for Li-Ion Batteries

AU - Neale, Nathan

AU - Pach, Gregory

AU - Carroll, Gerard

AU - Hian, Sisi

AU - Hu, Bin

AU - Sahore, Ritu

AU - Zhang, Lu

AU - Zhao, Bin

AU - Zhang, Zhengcheng

AU - Liu, Haihua

PY - 2019/9/23

Y1 - 2019/9/23

N2 - Organic monolayers of epoxy-containing oligo(ethylene oxide)s were grafted to the surface of silicon nanoparticles via a hydrosilylation reaction. The surface functional groups suppressed the chemical and electrochemical reactivity of the as-grown and lithiated silicon nanoparticles with high material utilization. A robust Si/electrolyte interphase was formed with the participation of the grafted organic groups with facilitated Li+ transfer and was further enforced by electrode integrity via the epoxy/poly(acrylic acid) (PAA) binder reaction. The improved cycling stability and post-test analysis indicate that surface functionalization on the Si particle level is a feasible approach to enabling a Si anode in high-energy-density lithium-ion batteries.

AB - Organic monolayers of epoxy-containing oligo(ethylene oxide)s were grafted to the surface of silicon nanoparticles via a hydrosilylation reaction. The surface functional groups suppressed the chemical and electrochemical reactivity of the as-grown and lithiated silicon nanoparticles with high material utilization. A robust Si/electrolyte interphase was formed with the participation of the grafted organic groups with facilitated Li+ transfer and was further enforced by electrode integrity via the epoxy/poly(acrylic acid) (PAA) binder reaction. The improved cycling stability and post-test analysis indicate that surface functionalization on the Si particle level is a feasible approach to enabling a Si anode in high-energy-density lithium-ion batteries.

KW - chemical/electrochemical stability

KW - Coulombic efficiency

KW - cycling stability

KW - epoxy-containing oligo(ethylene oxide)s

KW - SEI formation

KW - Si nanoparticles

KW - surface functionalization

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U2 - 10.1021/acsaem.9b01601

DO - 10.1021/acsaem.9b01601

M3 - Article

AN - SCOPUS:85073165236

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VL - 2

SP - 6176

EP - 6183

JO - ACS Applied Energy Materials

JF - ACS Applied Energy Materials

IS - 9

ER -

Tailoring the Surface of Silicon Nanoparticles for Enhanced Chemical and Electrochemical Stability for Li-Ion Batteries

Abstract

Bibliographical note

NREL Publication Number

Keywords

UN SDGs

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