A novel MnO2/Ti3C2Tx MXene nanocomposite as high performance electrode materials for flexible supercapacitors

Hanmei Jiang; Zegao Wang; Qian Yang; Muhammad Hanif; Zhiming Wang; Lichun Dong; Mingdong Dong

doi:10.1016/j.electacta.2018.08.096

A novel MnO₂/Ti₃C₂Tx MXene nanocomposite as high performance electrode materials for flexible supercapacitors

Hanmei Jiang, Zegao Wang, Qian Yang, Muhammad Hanif, Zhiming Wang, Lichun Dong^*, Mingdong Dong

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

Abstract

MnO ₂ is considered as one of the most promising electrode materials for flexible supercapacitors but it often suffer in poor conductivity, which limits practical applications according to industry needs. To enhance the performance, forming MnO ₂-based hybrid structures with conductive materials is a promising implement approach. Ti ₃C ₂T _x MXene sheets, a new kind of 2D transition metal carbides with metallic conductivity and hydrophilic nature, are promising candidate to couple with MnO ₂. According to the complementary principle, we design a novel structure MnO ₂/Ti ₃C ₂T _x hybrid nanocomposite by synergistically coupling one-dimensional (1D) MnO ₂ nanoneedles with two-dimensional (2D) Ti ₃C ₂T _x MXene sheet for flexible supercapacitor. XPS investigations suggest the obvious charge transfer from Ti ₃C ₂T _x sheets to MnO ₂ nanoneedles, where Ti ₃C ₂T _x sheets serve as a remarkable 2D conductive substrate to facilitate the electrons transfer in the nanocomposites. This strong synergistic effect between Ti ₃C ₂T _x and MnO ₂ resulting from the chemical interaction greatly enhance the electrical conductivity, specific capacitance, rate stability and structural stability of the MnO ₂/Ti ₃C ₂T _x nanocomposite. To show the potential application in energy storage, a symmetrical flexible supercapacitor device with good electrochemical performance, high flexibility and super cycling ability is fabricated by utilizing MnO ₂/Ti ₃C ₂T _x nanocomposites as electrode materials. This work has proposed a new approach of developing advanced nanocomposites from a MnO ₂-based electrode for high performance flexible electronics.

Original language	English
Journal	Electrochimica Acta
Volume	290
Pages (from-to)	695-703
Number of pages	9
ISSN	0013-4686
DOIs	https://doi.org/10.1016/j.electacta.2018.08.096
Publication status	Published - 10 Nov 2018

Keywords

2-DIMENSIONAL TITANIUM CARBIDE
ELECTROCHEMICAL SUPERCAPACITOR
ENERGY-STORAGE
FABRICATION
Flexible supercapacitor
HIGH VOLUMETRIC CAPACITANCE
MICROSPHERES
MXene
MnO2 nanoneedle
NANOCRYSTALS
NANOSHEETS
REDUCED GRAPHENE OXIDE
STABILITY
Synergistic effect
Ti3C2Tx

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10.1016/j.electacta.2018.08.096

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@article{7ef64c16cd794e5f8d5172e503263084,

title = "A novel MnO2/Ti3C2Tx MXene nanocomposite as high performance electrode materials for flexible supercapacitors",

abstract = "MnO 2 is considered as one of the most promising electrode materials for flexible supercapacitors but it often suffer in poor conductivity, which limits practical applications according to industry needs. To enhance the performance, forming MnO 2-based hybrid structures with conductive materials is a promising implement approach. Ti 3C 2T x MXene sheets, a new kind of 2D transition metal carbides with metallic conductivity and hydrophilic nature, are promising candidate to couple with MnO 2. According to the complementary principle, we design a novel structure MnO 2/Ti 3C 2T x hybrid nanocomposite by synergistically coupling one-dimensional (1D) MnO 2 nanoneedles with two-dimensional (2D) Ti 3C 2T x MXene sheet for flexible supercapacitor. XPS investigations suggest the obvious charge transfer from Ti 3C 2T x sheets to MnO 2 nanoneedles, where Ti 3C 2T x sheets serve as a remarkable 2D conductive substrate to facilitate the electrons transfer in the nanocomposites. This strong synergistic effect between Ti 3C 2T x and MnO 2 resulting from the chemical interaction greatly enhance the electrical conductivity, specific capacitance, rate stability and structural stability of the MnO 2/Ti 3C 2T x nanocomposite. To show the potential application in energy storage, a symmetrical flexible supercapacitor device with good electrochemical performance, high flexibility and super cycling ability is fabricated by utilizing MnO 2/Ti 3C 2T x nanocomposites as electrode materials. This work has proposed a new approach of developing advanced nanocomposites from a MnO 2-based electrode for high performance flexible electronics.",

keywords = "2-DIMENSIONAL TITANIUM CARBIDE, ELECTROCHEMICAL SUPERCAPACITOR, ENERGY-STORAGE, FABRICATION, Flexible supercapacitor, HIGH VOLUMETRIC CAPACITANCE, MICROSPHERES, MXene, MnO2 nanoneedle, NANOCRYSTALS, NANOSHEETS, REDUCED GRAPHENE OXIDE, STABILITY, Synergistic effect, Ti3C2Tx",

author = "Hanmei Jiang and Zegao Wang and Qian Yang and Muhammad Hanif and Zhiming Wang and Lichun Dong and Mingdong Dong",

year = "2018",

month = nov,

day = "10",

doi = "10.1016/j.electacta.2018.08.096",

language = "English",

volume = "290",

pages = "695--703",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Pergamon Press",

}

TY - JOUR

T1 - A novel MnO2/Ti3C2Tx MXene nanocomposite as high performance electrode materials for flexible supercapacitors

AU - Jiang, Hanmei

AU - Wang, Zegao

AU - Yang, Qian

AU - Hanif, Muhammad

AU - Wang, Zhiming

AU - Dong, Lichun

AU - Dong, Mingdong

PY - 2018/11/10

Y1 - 2018/11/10

N2 - MnO 2 is considered as one of the most promising electrode materials for flexible supercapacitors but it often suffer in poor conductivity, which limits practical applications according to industry needs. To enhance the performance, forming MnO 2-based hybrid structures with conductive materials is a promising implement approach. Ti 3C 2T x MXene sheets, a new kind of 2D transition metal carbides with metallic conductivity and hydrophilic nature, are promising candidate to couple with MnO 2. According to the complementary principle, we design a novel structure MnO 2/Ti 3C 2T x hybrid nanocomposite by synergistically coupling one-dimensional (1D) MnO 2 nanoneedles with two-dimensional (2D) Ti 3C 2T x MXene sheet for flexible supercapacitor. XPS investigations suggest the obvious charge transfer from Ti 3C 2T x sheets to MnO 2 nanoneedles, where Ti 3C 2T x sheets serve as a remarkable 2D conductive substrate to facilitate the electrons transfer in the nanocomposites. This strong synergistic effect between Ti 3C 2T x and MnO 2 resulting from the chemical interaction greatly enhance the electrical conductivity, specific capacitance, rate stability and structural stability of the MnO 2/Ti 3C 2T x nanocomposite. To show the potential application in energy storage, a symmetrical flexible supercapacitor device with good electrochemical performance, high flexibility and super cycling ability is fabricated by utilizing MnO 2/Ti 3C 2T x nanocomposites as electrode materials. This work has proposed a new approach of developing advanced nanocomposites from a MnO 2-based electrode for high performance flexible electronics.

AB - MnO 2 is considered as one of the most promising electrode materials for flexible supercapacitors but it often suffer in poor conductivity, which limits practical applications according to industry needs. To enhance the performance, forming MnO 2-based hybrid structures with conductive materials is a promising implement approach. Ti 3C 2T x MXene sheets, a new kind of 2D transition metal carbides with metallic conductivity and hydrophilic nature, are promising candidate to couple with MnO 2. According to the complementary principle, we design a novel structure MnO 2/Ti 3C 2T x hybrid nanocomposite by synergistically coupling one-dimensional (1D) MnO 2 nanoneedles with two-dimensional (2D) Ti 3C 2T x MXene sheet for flexible supercapacitor. XPS investigations suggest the obvious charge transfer from Ti 3C 2T x sheets to MnO 2 nanoneedles, where Ti 3C 2T x sheets serve as a remarkable 2D conductive substrate to facilitate the electrons transfer in the nanocomposites. This strong synergistic effect between Ti 3C 2T x and MnO 2 resulting from the chemical interaction greatly enhance the electrical conductivity, specific capacitance, rate stability and structural stability of the MnO 2/Ti 3C 2T x nanocomposite. To show the potential application in energy storage, a symmetrical flexible supercapacitor device with good electrochemical performance, high flexibility and super cycling ability is fabricated by utilizing MnO 2/Ti 3C 2T x nanocomposites as electrode materials. This work has proposed a new approach of developing advanced nanocomposites from a MnO 2-based electrode for high performance flexible electronics.

KW - 2-DIMENSIONAL TITANIUM CARBIDE

KW - ELECTROCHEMICAL SUPERCAPACITOR

KW - ENERGY-STORAGE

KW - FABRICATION

KW - Flexible supercapacitor

KW - HIGH VOLUMETRIC CAPACITANCE

KW - MICROSPHERES

KW - MXene

KW - MnO2 nanoneedle

KW - NANOCRYSTALS

KW - NANOSHEETS

KW - REDUCED GRAPHENE OXIDE

KW - STABILITY

KW - Synergistic effect

KW - Ti3C2Tx

UR - http://www.scopus.com/inward/record.url?scp=85054300154&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2018.08.096

DO - 10.1016/j.electacta.2018.08.096

M3 - Journal article

SN - 0013-4686

VL - 290

SP - 695

EP - 703

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

A novel MnO₂/Ti₃C₂Tx MXene nanocomposite as high performance electrode materials for flexible supercapacitors

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Keywords

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