Poly-dopamine carbon-coated stable silicon/graphene/CNT composite as anode for lithium ion batteries

Fangfang Wang; Song Lin; Xuesong Lu; Ruoyu Hong; Huiyong Liu

doi:10.1016/j.electacta.2021.139708

Poly-dopamine carbon-coated stable silicon/graphene/CNT composite as anode for lithium ion batteries

Fangfang Wang, Song Lin, Xuesong Lu, Ruoyu Hong^*, Huiyong Liu

^*Corresponding author for this work

School of Engineering & Physical Sciences

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

55 Citations (Scopus)

Abstract

To buffer the volume expansion of silicon during charge-discharge process, a 3D carbon-coated stable silicon/graphene/CNT (C@Si/GN/CNT/PDA-C) composite was prepared. Si nanoparticles (SiNPs) were first modified by hexadecyl trimethyl ammonium bromide (CTAB) to enhance their stability and dispersibility in water, then uniformly distributed in graphene/carbon nanotubes (GN/CNT) by electrostatic self-assembly, and ultimately encapsulated by carbonized poly-dopamine carbon layer (PDA-C) at high-temperature. PDA-C not only alleviates the volume expansion of Si and inhibits the direct contact of Si with electrolyte, but also acts as a bridge between the conductive GN/CNT and Si to maintain electrode integrity. As an anode material for lithium-ion batteries, the C@Si/GN/CNT/PDA-C exhibits a superior reversible capacity of 1946 mAh g ^{− 1} after 100 cycles with the capacity retention of 68.9% at a current density of 0.1 A g ^{− 1}, and over 1306 mAh g ^{− 1} after 100 cycles at 1 A g ^{− 1}. The excellent electrochemical performance of C@Si/GN/CNT/PDA-C is attributed to the stable hierarchical structure.

Original language	English
Article number	139708
Journal	Electrochimica Acta
Volume	404
Early online date	5 Dec 2021
DOIs	https://doi.org/10.1016/j.electacta.2021.139708
Publication status	Published - 1 Feb 2022

Keywords

Anode material
GN/CNT
Lithium ion battery
Poly-dopamine
Silicon

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry

UN SDGs

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

Access to Document

10.1016/j.electacta.2021.139708

Cite this

@article{6a96356b3ebe434f9f7f7b87531ae7db,

title = "Poly-dopamine carbon-coated stable silicon/graphene/CNT composite as anode for lithium ion batteries",

abstract = "To buffer the volume expansion of silicon during charge-discharge process, a 3D carbon-coated stable silicon/graphene/CNT (C@Si/GN/CNT/PDA-C) composite was prepared. Si nanoparticles (SiNPs) were first modified by hexadecyl trimethyl ammonium bromide (CTAB) to enhance their stability and dispersibility in water, then uniformly distributed in graphene/carbon nanotubes (GN/CNT) by electrostatic self-assembly, and ultimately encapsulated by carbonized poly-dopamine carbon layer (PDA-C) at high-temperature. PDA-C not only alleviates the volume expansion of Si and inhibits the direct contact of Si with electrolyte, but also acts as a bridge between the conductive GN/CNT and Si to maintain electrode integrity. As an anode material for lithium-ion batteries, the C@Si/GN/CNT/PDA-C exhibits a superior reversible capacity of 1946 mAh g − 1 after 100 cycles with the capacity retention of 68.9% at a current density of 0.1 A g − 1, and over 1306 mAh g − 1 after 100 cycles at 1 A g − 1. The excellent electrochemical performance of C@Si/GN/CNT/PDA-C is attributed to the stable hierarchical structure.",

keywords = "Anode material, GN/CNT, Lithium ion battery, Poly-dopamine, Silicon",

author = "Fangfang Wang and Song Lin and Xuesong Lu and Ruoyu Hong and Huiyong Liu",

note = "Funding Information: This research was financially supported by the National Natural Science Foundation of China (NSFC, no. 21246002 ), Minjiang Scholarship of Fujian Province (no. Min-Gaojiao[2010]-117 ), Central-government Guided Fund for Local Economic Development (no. 830170778 ), R&D Fund for Strategic Emerging Industry of Fujian Province (no. 82918001 ), and International Cooperation Project of Fujian Science and Technology Department (no. 830170771 ). Publisher Copyright: {\textcopyright} 2021",

year = "2022",

month = feb,

day = "1",

doi = "10.1016/j.electacta.2021.139708",

language = "English",

volume = "404",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier",

}

TY - JOUR

T1 - Poly-dopamine carbon-coated stable silicon/graphene/CNT composite as anode for lithium ion batteries

AU - Wang, Fangfang

AU - Lin, Song

AU - Lu, Xuesong

AU - Hong, Ruoyu

AU - Liu, Huiyong

N1 - Funding Information: This research was financially supported by the National Natural Science Foundation of China (NSFC, no. 21246002 ), Minjiang Scholarship of Fujian Province (no. Min-Gaojiao[2010]-117 ), Central-government Guided Fund for Local Economic Development (no. 830170778 ), R&D Fund for Strategic Emerging Industry of Fujian Province (no. 82918001 ), and International Cooperation Project of Fujian Science and Technology Department (no. 830170771 ). Publisher Copyright: © 2021

PY - 2022/2/1

Y1 - 2022/2/1

N2 - To buffer the volume expansion of silicon during charge-discharge process, a 3D carbon-coated stable silicon/graphene/CNT (C@Si/GN/CNT/PDA-C) composite was prepared. Si nanoparticles (SiNPs) were first modified by hexadecyl trimethyl ammonium bromide (CTAB) to enhance their stability and dispersibility in water, then uniformly distributed in graphene/carbon nanotubes (GN/CNT) by electrostatic self-assembly, and ultimately encapsulated by carbonized poly-dopamine carbon layer (PDA-C) at high-temperature. PDA-C not only alleviates the volume expansion of Si and inhibits the direct contact of Si with electrolyte, but also acts as a bridge between the conductive GN/CNT and Si to maintain electrode integrity. As an anode material for lithium-ion batteries, the C@Si/GN/CNT/PDA-C exhibits a superior reversible capacity of 1946 mAh g − 1 after 100 cycles with the capacity retention of 68.9% at a current density of 0.1 A g − 1, and over 1306 mAh g − 1 after 100 cycles at 1 A g − 1. The excellent electrochemical performance of C@Si/GN/CNT/PDA-C is attributed to the stable hierarchical structure.

AB - To buffer the volume expansion of silicon during charge-discharge process, a 3D carbon-coated stable silicon/graphene/CNT (C@Si/GN/CNT/PDA-C) composite was prepared. Si nanoparticles (SiNPs) were first modified by hexadecyl trimethyl ammonium bromide (CTAB) to enhance their stability and dispersibility in water, then uniformly distributed in graphene/carbon nanotubes (GN/CNT) by electrostatic self-assembly, and ultimately encapsulated by carbonized poly-dopamine carbon layer (PDA-C) at high-temperature. PDA-C not only alleviates the volume expansion of Si and inhibits the direct contact of Si with electrolyte, but also acts as a bridge between the conductive GN/CNT and Si to maintain electrode integrity. As an anode material for lithium-ion batteries, the C@Si/GN/CNT/PDA-C exhibits a superior reversible capacity of 1946 mAh g − 1 after 100 cycles with the capacity retention of 68.9% at a current density of 0.1 A g − 1, and over 1306 mAh g − 1 after 100 cycles at 1 A g − 1. The excellent electrochemical performance of C@Si/GN/CNT/PDA-C is attributed to the stable hierarchical structure.

KW - Anode material

KW - GN/CNT

KW - Lithium ion battery

KW - Poly-dopamine

KW - Silicon

UR - http://www.scopus.com/inward/record.url?scp=85121852437&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2021.139708

DO - 10.1016/j.electacta.2021.139708

M3 - Article

AN - SCOPUS:85121852437

SN - 0013-4686

VL - 404

JO - Electrochimica Acta

JF - Electrochimica Acta

M1 - 139708

ER -

Poly-dopamine carbon-coated stable silicon/graphene/CNT composite as anode for lithium ion batteries

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this