Porous Two-Dimensional Transition Metal Carbide (MXene) Flakes for High-Performance Li-Ion Storage

Chang E. Ren; Meng Qiang Zhao; Taron Makaryan; Joseph Halim; Muhammad Boota; Sankalp Kota; Babak Anasori; Michel W. Barsoum; Yury Gogotsi

doi:10.1002/celc.201600059

Porous Two-Dimensional Transition Metal Carbide (MXene) Flakes for High-Performance Li-Ion Storage

Chang E. Ren, Meng Qiang Zhao, Taron Makaryan, Joseph Halim, Muhammad Boota, Sankalp Kota, Babak Anasori, Michel W. Barsoum, Yury Gogotsi

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

476 Scopus citations

Abstract

Herein we develop a chemical etching method to produce porous two-dimensional (2D) Ti₃C₂T_x MXenes at room temperature in aqueous solutions. The as-produced porous Ti₃C₂T_x (p-Ti₃C₂T_x) have larger specific surface areas and more open structures than their pristine counterparts, and can be fabricated into flexible films with, or without, the addition of carbon nanotubes (CNTs). The as-fabricated p-Ti₃C₂T_x/CNT films showed significantly improved lithium ion storage capabilities compared to pristine Ti₃C₂T_x based films, with a very high capacity of ≈1250mAhg^-1 at 0.1C, excellent cycling stability, and good rate performance (330mAhg^-1 at 10C). Using the same chemical etching method, we also made porous Nb₂CT_x and V₂CT_x MXenes. Therefore, this study provides a simple, yet effective, procedure to introduce pores into MXenes and possibly other 2D sheets that in turn, can enhance their electrochemical properties.

Original language	English (US)
Pages (from-to)	689-693
Number of pages	5
Journal	ChemElectroChem
Volume	3
Issue number	5
DOIs	https://doi.org/10.1002/celc.201600059
State	Published - May 1 2016
Externally published	Yes

All Science Journal Classification (ASJC) codes

Catalysis
Electrochemistry

Keywords

Etching
Li-ion storage
MXene
Partial oxidation
Porous 2D materials

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10.1002/celc.201600059

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title = "Porous Two-Dimensional Transition Metal Carbide (MXene) Flakes for High-Performance Li-Ion Storage",

abstract = "Herein we develop a chemical etching method to produce porous two-dimensional (2D) Ti3C2Tx MXenes at room temperature in aqueous solutions. The as-produced porous Ti3C2Tx (p-Ti3C2Tx) have larger specific surface areas and more open structures than their pristine counterparts, and can be fabricated into flexible films with, or without, the addition of carbon nanotubes (CNTs). The as-fabricated p-Ti3C2Tx/CNT films showed significantly improved lithium ion storage capabilities compared to pristine Ti3C2Tx based films, with a very high capacity of ≈1250mAhg-1 at 0.1C, excellent cycling stability, and good rate performance (330mAhg-1 at 10C). Using the same chemical etching method, we also made porous Nb2CTx and V2CTx MXenes. Therefore, this study provides a simple, yet effective, procedure to introduce pores into MXenes and possibly other 2D sheets that in turn, can enhance their electrochemical properties.",

keywords = "Etching, Li-ion storage, MXene, Partial oxidation, Porous 2D materials",

author = "Ren, {Chang E.} and Zhao, {Meng Qiang} and Taron Makaryan and Joseph Halim and Muhammad Boota and Sankalp Kota and Babak Anasori and Barsoum, {Michel W.} and Yury Gogotsi",

note = "Publisher Copyright: {\textcopyright} 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.",

year = "2016",

month = may,

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doi = "10.1002/celc.201600059",

language = "English (US)",

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T1 - Porous Two-Dimensional Transition Metal Carbide (MXene) Flakes for High-Performance Li-Ion Storage

AU - Ren, Chang E.

AU - Zhao, Meng Qiang

AU - Makaryan, Taron

AU - Halim, Joseph

AU - Boota, Muhammad

AU - Kota, Sankalp

AU - Anasori, Babak

AU - Barsoum, Michel W.

AU - Gogotsi, Yury

PY - 2016/5/1

Y1 - 2016/5/1

N2 - Herein we develop a chemical etching method to produce porous two-dimensional (2D) Ti3C2Tx MXenes at room temperature in aqueous solutions. The as-produced porous Ti3C2Tx (p-Ti3C2Tx) have larger specific surface areas and more open structures than their pristine counterparts, and can be fabricated into flexible films with, or without, the addition of carbon nanotubes (CNTs). The as-fabricated p-Ti3C2Tx/CNT films showed significantly improved lithium ion storage capabilities compared to pristine Ti3C2Tx based films, with a very high capacity of ≈1250mAhg-1 at 0.1C, excellent cycling stability, and good rate performance (330mAhg-1 at 10C). Using the same chemical etching method, we also made porous Nb2CTx and V2CTx MXenes. Therefore, this study provides a simple, yet effective, procedure to introduce pores into MXenes and possibly other 2D sheets that in turn, can enhance their electrochemical properties.

AB - Herein we develop a chemical etching method to produce porous two-dimensional (2D) Ti3C2Tx MXenes at room temperature in aqueous solutions. The as-produced porous Ti3C2Tx (p-Ti3C2Tx) have larger specific surface areas and more open structures than their pristine counterparts, and can be fabricated into flexible films with, or without, the addition of carbon nanotubes (CNTs). The as-fabricated p-Ti3C2Tx/CNT films showed significantly improved lithium ion storage capabilities compared to pristine Ti3C2Tx based films, with a very high capacity of ≈1250mAhg-1 at 0.1C, excellent cycling stability, and good rate performance (330mAhg-1 at 10C). Using the same chemical etching method, we also made porous Nb2CTx and V2CTx MXenes. Therefore, this study provides a simple, yet effective, procedure to introduce pores into MXenes and possibly other 2D sheets that in turn, can enhance their electrochemical properties.

KW - Etching

KW - Li-ion storage

KW - MXene

KW - Partial oxidation

KW - Porous 2D materials

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Porous Two-Dimensional Transition Metal Carbide (MXene) Flakes for High-Performance Li-Ion Storage

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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