Characterization of an AX Compound Derived from Ti 2 SC MAX Phase

Joji Hasegawa, Kei Kawahara, Kazunari Shima, Miki Inada, Naoya Enomoto, Katsuro Hayashi

研究成果: ジャーナルへの寄稿記事

抄録

Extraction of M elements from MAX phases results in “AX” compounds in contrast to the well-defined two-dimensional (2D) materials known as MXene, which are prepared by the selective etching of A elements. Despite the extensive studies on MXene from both experimental and computational aspects, the nature of the AX compounds still remains elusive, because the electrochemical etching of M atoms from MAX significantly spoils the crystal structure, predominantly resulting in amorphous AX products. Here, we demonstrate the characterization of an S/C complex prepared by the electrochemical etching of Ti 2 SC. The spark plasma sintering (SPS) technique affords a well-sintered Ti 2 SC disk with high purity, which can be directly utilized as a binder-free Ti 2 SC electrode. It is found that the electrochemically extracted Ti elements in NH 4 F electrolyte are partially crystallized into the monoclinic titanium oxynitride, TiO 0.34 N 0.74 . The formed amorphous S/C compound is classified into three components: acetone-soluble volatiles including elemental sulfur, acetone-insoluble volatiles, and non-volatile species carbonizable into S-doped carbon.

元の言語英語
ページ(範囲)2312-2317
ページ数6
ジャーナルEuropean Journal of Inorganic Chemistry
2019
発行部数17
DOI
出版物ステータス出版済み - 5 8 2019

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Electrochemical etching
Acetone
Spark plasma sintering
Titanium
Sulfur
Electrolytes
Binders
Etching
Carbon
Crystal structure
Atoms
Electrodes

All Science Journal Classification (ASJC) codes

  • Inorganic Chemistry

これを引用

Characterization of an AX Compound Derived from Ti 2 SC MAX Phase . / Hasegawa, Joji; Kawahara, Kei; Shima, Kazunari; Inada, Miki; Enomoto, Naoya; Hayashi, Katsuro.

:: European Journal of Inorganic Chemistry, 巻 2019, 番号 17, 08.05.2019, p. 2312-2317.

研究成果: ジャーナルへの寄稿記事

Hasegawa, Joji ; Kawahara, Kei ; Shima, Kazunari ; Inada, Miki ; Enomoto, Naoya ; Hayashi, Katsuro. / Characterization of an AX Compound Derived from Ti 2 SC MAX Phase :: European Journal of Inorganic Chemistry. 2019 ; 巻 2019, 番号 17. pp. 2312-2317.
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AU - Kawahara, Kei

AU - Shima, Kazunari

AU - Inada, Miki

AU - Enomoto, Naoya

AU - Hayashi, Katsuro

PY - 2019/5/8

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