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Flexible film electrode and preparation method and application thereof

A flexible film and electrode technology, applied in the field of environmental water pollution control and utilization research, can solve the problems of limited practical application, loss of activity, poor stability, etc., and achieve the effect of superior mechanical flexibility, strong stability, and simple preparation

Pending Publication Date: 2022-08-09
SHANGHAI INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the brittleness of traditional electrodes, ENRA has poor stability, loss and even loss of activity in fluid environments, which limits its practical application.

Method used

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  • Flexible film electrode and preparation method and application thereof
  • Flexible film electrode and preparation method and application thereof
  • Flexible film electrode and preparation method and application thereof

Examples

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Effect test

preparation example Construction

[0042] A two-dimensional flexible CuBDC@Ti 3 C 2 T x Electrode Fabrication Method Seamlessly Coating CuBDC on Electronegative Ti 3 C 2 T x Fabrication of 2D flexible CuBDC@Ti on nanosheets 3 C 2 T x electrode, the specific steps are as follows:

[0043] (1) 1-30g of 1,4-phthalic acid (H 2 BDC) mixed in 100-1000mL of DMF and 50-500mL of CH 3 CN as the bottom layer.

[0044] (2) On this solution, 50-500mL of DMF and 50-500mL of CH 3 CN is added slowly and carefully as an intermediate or spacer layer.

[0045] (3) Finally, in 50-500mL of DMF and 100-1000mL of CH 3 Add 1-10 g of Ti to CN mixture 3 C 2 T x Nanosheets and 3-30g Cu(NO 3 ) 2 ·3H 2 O, slowly add to the tube as the top layer. The solution in the tube was left undisturbed at room temperature for 24 hours to allow the reaction to occur.

Embodiment 1

[0048] 1. Two-dimensional flexible CuBDC@Ti 3 C 2 T x The specific steps for electrode preparation are as follows:

[0049] 10g of 1,4-phthalic acid (H 2 BDC) mixed in 200 mL of DMF and 100 mL of CH 3 CN as the bottom layer.

[0050] On this solution, 100mL of DMF and 100mL of CH 3 CN is added slowly and carefully as an intermediate or spacer layer.

[0051] Finally, in 100mL of DMF and 200mL of CH 3 Add 5 g of Ti to the CN mixture 3 C 2 T x Nanosheets and 10g Cu(NO 3 ) 2 ·3H 2 O, slowly add to the tube as the top layer. The solution in the tube was left undisturbed at room temperature for 24 hours to allow the reaction to occur.

[0052] 2. The obtained 2D flexible CuBDC@Ti 3 C 2 T x Electrodes for ENRA

[0053] 2D Flexible CuBDC@Ti 3 C 2 T x The electrode can be directly used as a working electrode, with platinum electrode as counter electrode and Ag / AgCl electrode as reference electrode to form a three-electrode system; the three-electrode system is pla...

Embodiment 2

[0059] 2D Flexible CuBDC@Ti 3 C 2 T x The preparation of electrodes and the method for catalytic reduction of nitrate are as in Example 1, except that CuBDC@Ti is prepared 3 C 2 T x without adding Ti 3 C 2 T x Nanosheets.

[0060] from Figure 4 It can be seen that the obtained CuBDC electrode still maintains the nanosheet structure with thicker thickness, possibly with partial stacking.

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Abstract

The invention relates to a flexible film electrode and a preparation method and application thereof, the electrode takes an electronegative Ti3C2Tx nanosheet as a substrate, and the electronegative Ti3C2Tx nanosheet is coated with 1, 4-copper phthalate. The preparation method comprises the following steps: (1) mixing 1, 4-phthalic acid in a solvent to serve as a bottom layer; (2) adding a solvent on the bottom layer as a middle layer; and (3) mixing the Ti3C2Tx nanosheet and Cu (NO3) 2.3 H2O in a solvent, and adding the mixture as a top layer onto the middle layer. The electrode can be used to convert nitrate to high value added ammonia. Compared with the prior art, the invention provides the flexible electrode combining the 2D Cu MOFs and the MXenes, and the ENRA performance, the stability, the conductivity, the flexibility and the ecological friendliness of the electrode can be improved at the same time.

Description

technical field [0001] The invention relates to the technical field of environmental water pollution treatment and utilization research, in particular to a flexible thin film electrode and a preparation method and application thereof. Background technique [0002] Ammonia (NH 3 ) is one of the most important fertilizers and chemical raw materials produced by the Haber-Bosch process. Its high energy density and high hydrogen storage capacity make it a potential renewable energy carrier. In recent years, electrocatalytic N 2 The reduction reaction (NRR) has been shown to be a potential NH generating 3 method, but the high dissociation energy of N≡N bonds and the N 2 The limited solubility in water inevitably leads to an energy-intensive process. Nitric acid (NO 3 - ) was chosen as the most feasible nitrogen source for NH generation due to its high solubility in water and low energy consumption 3 . In addition, NO 3 - It is one of the most difficult N-containing poll...

Claims

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Application Information

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IPC IPC(8): C25B1/27C25B11/04
CPCC25B1/27C25B11/04Y02W10/37Y02E60/36
Inventor 封涛
Owner SHANGHAI INSTITUTE OF TECHNOLOGY
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