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US 12,344,944 B2Granted
Method for HF-free facile and rapid synthesis of MXenes related compounds
AssigneeThe Hong Kong Polytechnic University
InventorsJianhua Hao, Sin Yi Pang
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Abstract
Provided herein is a method for preparing MXenes, such as Ti2CTx, Cr2CTx, and V2CTx, products prepared therefrom, and compositions and devices including the same.
Claims7
A method for preparing a MXene, the method comprising:
- providing a composite electrode comprising at least one MAX-phase composition and a carbonaceous material, wherein the at least one MAX-phase composition has an empirical formula of Mn+1AXn, wherein M is Ti, A is Al, X is C, and n is 1;
- a counter electrode;
- and
- an aqueous electrolyte solution comprising 1 M HCl between and in contact with the composite electrode and the counter electrode;
- and
- applying an electric current at a potential of 0.3 V between the composite electrode and the counter electrode for 9 hours resulting in electrolytic reduction of the at least one MAX-phase composition thereby forming the MXene, wherein the electrolytic reduction is conducted at a temperature between 45 to 55° C.
3 more elements
A method for preparing a MXene, the method comprising:
- providing a composite electrode comprising at least one MAX-phase composition;
- a carbonaceous material selected from the group consisting of CB, CFC, and combinations thereof;
- a binder, wherein the at least one MAX-phase composition has an empirical formula of Mn+1AXn, wherein each of M is Ti;
- A is Al;
- and each X is C;
- and n is 1;
- wherein the at least one MAX-phase composition and carbonaceous material are present in the composite electrode in a mass ratio of 90:10 to 99:1;
- and wherein the binder is present in the composite electrode in a weight ratio of 1.0-1.5% by mass;
- a counter electrode;
- and
- an electrolyte solution comprising 1 M HCl between and in contact with the composite electrode and the counter electrode;
- and
- applying an electric current between the composite electrode and the counter electrode at a voltage 0.3 V for 9 hours resulting in the electrolytic reduction of the at least one MAX-phase composition thereby forming the MXene, wherein the electrolytic reduction is conducted at a temperature between 45 to 55° C.
10 more elements
Dependencies are inferred from the claim text.