Electrosynthesis of Ti3AlC2-Derived Porous Carbon in Molten Salt

Zhongya Pang; Xingli Zou; Wei Tang; Tianyu Shi; Shujuan Wang; Li Ji; Hsien-Yi Hsu; Qian Xu; Xionggang Lu

doi:10.1007/s11837-020-04335-w

Electrosynthesis of Ti₃AlC₂-Derived Porous Carbon in Molten Salt

Zhongya Pang, Xingli Zou^*, Wei Tang, Tianyu Shi, Shujuan Wang, Li Ji, Hsien-Yi Hsu, Qian Xu, Xionggang Lu^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

9 Citations (Scopus)

Abstract

Carbide-derived carbon (CDC) as an unconventional porous carbon material has been widely used for various applications. In this work, Ti₃AlC₂-derived porous carbon (Ti₃AlC₂-CDC) was electrochemically synthesized at 900°C and 3.0 V in molten CaCl₂-NaCl. The obtained Ti₃AlC₂-CDC with abundant slit-like mesopores showed a high specific surface area of 425 m²/g. The variation of the morphology from the Ti₃AlC₂ precursor to Ti₃AlC₂-CDC was investigated, with the Ti₃AlC₂-CDC demonstrating a typical loose layered morphology and amorphous carbon structure. The intermediate products were also systematically analyzed to investigate the molten salt electrochemical etching process. It was found that Ti₃AlC₂ can be oxidized by residual O²⁻ in the molten salt to form tiny Al₂O₃ particles on the anodic Ti₃AlC₂ surface during the etching process, then Ti₃AlC₂-CDC can be obtained by successively removing these Al₂O₃, Al, and Ti from the Ti₃AlC₂ precursor.

Original language	English
Pages (from-to)	3887–3894
Journal	JOM
Volume	72
Issue number	11
Online published	2 Sept 2020
DOIs	https://doi.org/10.1007/s11837-020-04335-w
Publication status	Published - Nov 2020

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@article{3b657454a35f46b28f3e2c14a22e0359,

title = "Electrosynthesis of Ti3AlC2-Derived Porous Carbon in Molten Salt",

abstract = "Carbide-derived carbon (CDC) as an unconventional porous carbon material has been widely used for various applications. In this work, Ti3AlC2-derived porous carbon (Ti3AlC2-CDC) was electrochemically synthesized at 900°C and 3.0 V in molten CaCl2-NaCl. The obtained Ti3AlC2-CDC with abundant slit-like mesopores showed a high specific surface area of 425 m2/g. The variation of the morphology from the Ti3AlC2 precursor to Ti3AlC2-CDC was investigated, with the Ti3AlC2-CDC demonstrating a typical loose layered morphology and amorphous carbon structure. The intermediate products were also systematically analyzed to investigate the molten salt electrochemical etching process. It was found that Ti3AlC2 can be oxidized by residual O2− in the molten salt to form tiny Al2O3 particles on the anodic Ti3AlC2 surface during the etching process, then Ti3AlC2-CDC can be obtained by successively removing these Al2O3, Al, and Ti from the Ti3AlC2 precursor.",

author = "Zhongya Pang and Xingli Zou and Wei Tang and Tianyu Shi and Shujuan Wang and Li Ji and Hsien-Yi Hsu and Qian Xu and Xionggang Lu",

year = "2020",

month = nov,

doi = "10.1007/s11837-020-04335-w",

language = "English",

volume = "72",

pages = "3887–3894",

journal = "JOM",

issn = "1047-4838",

publisher = "Minerals, Metals & Materials Society",

number = "11",

}

TY - JOUR

T1 - Electrosynthesis of Ti3AlC2-Derived Porous Carbon in Molten Salt

AU - Pang, Zhongya

AU - Zou, Xingli

AU - Tang, Wei

AU - Shi, Tianyu

AU - Wang, Shujuan

AU - Ji, Li

AU - Hsu, Hsien-Yi

AU - Xu, Qian

AU - Lu, Xionggang

PY - 2020/11

Y1 - 2020/11

N2 - Carbide-derived carbon (CDC) as an unconventional porous carbon material has been widely used for various applications. In this work, Ti3AlC2-derived porous carbon (Ti3AlC2-CDC) was electrochemically synthesized at 900°C and 3.0 V in molten CaCl2-NaCl. The obtained Ti3AlC2-CDC with abundant slit-like mesopores showed a high specific surface area of 425 m2/g. The variation of the morphology from the Ti3AlC2 precursor to Ti3AlC2-CDC was investigated, with the Ti3AlC2-CDC demonstrating a typical loose layered morphology and amorphous carbon structure. The intermediate products were also systematically analyzed to investigate the molten salt electrochemical etching process. It was found that Ti3AlC2 can be oxidized by residual O2− in the molten salt to form tiny Al2O3 particles on the anodic Ti3AlC2 surface during the etching process, then Ti3AlC2-CDC can be obtained by successively removing these Al2O3, Al, and Ti from the Ti3AlC2 precursor.

AB - Carbide-derived carbon (CDC) as an unconventional porous carbon material has been widely used for various applications. In this work, Ti3AlC2-derived porous carbon (Ti3AlC2-CDC) was electrochemically synthesized at 900°C and 3.0 V in molten CaCl2-NaCl. The obtained Ti3AlC2-CDC with abundant slit-like mesopores showed a high specific surface area of 425 m2/g. The variation of the morphology from the Ti3AlC2 precursor to Ti3AlC2-CDC was investigated, with the Ti3AlC2-CDC demonstrating a typical loose layered morphology and amorphous carbon structure. The intermediate products were also systematically analyzed to investigate the molten salt electrochemical etching process. It was found that Ti3AlC2 can be oxidized by residual O2− in the molten salt to form tiny Al2O3 particles on the anodic Ti3AlC2 surface during the etching process, then Ti3AlC2-CDC can be obtained by successively removing these Al2O3, Al, and Ti from the Ti3AlC2 precursor.

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U2 - 10.1007/s11837-020-04335-w

DO - 10.1007/s11837-020-04335-w

M3 - RGC 21 - Publication in refereed journal

SN - 1047-4838

VL - 72

SP - 3887

EP - 3894

JO - JOM

JF - JOM

IS - 11

ER -