Title:
METHOD FOR RECOVERING ELECTRICAL PROPERTIES AND IMPROVING OXIDATION STABILITY IN TWO-DIMENSIONAL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2020/067617
Kind Code:
A1
Abstract:
The present invention relates to a method for recovering electrical properties and improving oxidation stability in a two dimensional material and, more specifically, to a method comprising the steps of: (a) preparing a MXene solution containing a transition metal carbide and a transition metal carbonitride, each of which has a two-dimensional structure; (b) forming the prepared MXene solution into a MXene film containing a composite material in a film form; (c) storing the formed MXene film at room temperature; (d) disposing the MXene film oxidized during the room temperature storage in vacuum equipment so as to use the MXene film; (e) injecting hydrogen gas into the vacuum equipment in which the MXene film has been disposed; and (f) annealing the MXene film to recover electric properties of the MXene film exposed to the injected hydrogen gas to a pre-oxidation level, whereby electrical properties of the MXene film, which have become poor due to oxidation at room temperature, can be recovered by annealing the MXene film with the exposure thereof to hydrogen gas in the vacuum equipment.
Inventors:
LEE YONG HEE (KR)
AHN CHI WON (KR)
KIM SEON JOON (KR)
CHAE YOON JEONG (KR)
LEE BYEONG JOO (KR)
AHN CHI WON (KR)
KIM SEON JOON (KR)
CHAE YOON JEONG (KR)
LEE BYEONG JOO (KR)
Application Number:
PCT/KR2019/003787
Publication Date:
April 02, 2020
Filing Date:
April 01, 2019
Export Citation:
Assignee:
KOREA ADVANCED INST SCI & TECH (KR)
International Classes:
C04B41/80; C04B35/56; C04B35/622; C04B41/00
Foreign References:
| CN106848226A | 2017-06-13 | |||
| KR20150097397A | 2015-08-26 | |||
| KR20170102768A | 2017-09-12 | |||
| KR20170036507A | 2017-04-03 |
Other References:
RAKHI, R. B. ET AL.: "Effect of postetch annealing gas composition on the structural and electrochemical properties of Ti2CTx MXene electrodes for supercapacitor applications", CHEMISTRY OF MATERIALS, vol. 27, no. 15, 2015, pages 5314 - 5323, XP055571666, DOI: 10.1021/acs.chemmater.5b01623
Attorney, Agent or Firm:
HAN, Sang Soo (KR)
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