Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Two-dimensional boron nitride nano-composite hybrid proton exchange membrane and preparation method thereof

A nanocomposite and proton exchange membrane technology, which is applied in the field of two-dimensional boron nitride nanocomposite-based hybrid proton exchange membrane and its preparation, can solve the problem of methanol permeability reduction, achieve low methanol permeability, and promote proton exchange. The effect of transmission and broad application prospects

Inactive Publication Date: 2018-05-15
FUDAN UNIV
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The proton conductivity of the obtained composite proton exchange membrane at 80°C–100%RH is 0.1 S cm -1 , slightly lower than commercial Nafion Tm 117 membrane, but its methanol permeability is higher than that of Nafion Tm 117 film reduces by an order of magnitude

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Two-dimensional boron nitride nano-composite hybrid proton exchange membrane and preparation method thereof
  • Two-dimensional boron nitride nano-composite hybrid proton exchange membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Disperse 2 g of boron nitride powder and 10 mL of 5 wt% Nafion solution in 200 mL of ethanol, and sonicate for 8 h; the suspension obtained after sonication was centrifuged at 3000 rpm for 20 min, and the supernatant was collected, washed with ethanol and Obtain Nafion-modified two-dimensional boron nitride nanocomposite aqueous phase dispersion after water centrifugal washing;

[0016] (2) Prepare 40 mL of 1 mg / mL two-dimensional boron nitride nanocomposite aqueous dispersion, add 1 mL of 20 mg / mL polyvinyl alcohol aqueous solution and 0.4 mL of commercially available 5 wt% Nafion solution. The resulting dispersion was suction-filtered under a pressure of 1 MPa to form a membrane. Then the membrane was removed from the basement membrane, treated with 1 M sulfuric acid at 30 °C for 2 h, and then washed with water to remove excess acid. Finally, ionomer-modified two-dimensional boron nitride nanocomposite-based hybrid proton exchange membrane was obtained.

[0017]...

Embodiment 2

[0024] (1) Disperse 4 g of boron nitride powder and 10 mL of 10 wt% Nafion solution in 400 mL of ethanol, and sonicate for 10 h; the suspension obtained after sonication was centrifuged at 2000 rpm for 15 min, and the supernatant was collected, washed with ethanol and Obtain Nafion-modified two-dimensional boron nitride nanocomposite aqueous phase dispersion after water centrifugal washing;

[0025] (2) Prepare 80 mL of 0.5 mg / mL two-dimensional boron nitride nanocomposite aqueous dispersion, add 2 mL of 10 mg / mL polyvinyl alcohol aqueous solution and 0.2 mL of commercially available 5 wt% Nafion solution. The resulting dispersion was suction-filtered under a pressure of 0.5 MPa to form a membrane. Then the membrane was removed from the basement membrane, treated with 0.5 M sulfuric acid at 40 °C for 1 h, and then washed with water to remove excess acid. Finally, ionomer-modified two-dimensional boron nitride nanocomposite-based hybrid proton exchange membrane was obtained. ...

Embodiment 3

[0027] (1) Disperse 2 g of boron nitride powder and 10 mL of 5 wt% Nafion solution in 400 mL of ethanol, and sonicate for 12 h; the suspension obtained after sonication was centrifuged at 5000 rpm for 15 min, and the supernatant was collected, washed with ethanol and Obtain Nafion-modified two-dimensional boron nitride nanocomposite aqueous phase dispersion after water centrifugal washing;

[0028] (2) Prepare 50 mL of 1.5 mg / mL two-dimensional boron nitride nanocomposite aqueous dispersion, add 5 mL of 20 mg / mL polyvinyl alcohol aqueous solution and 2 mL of commercially available 5 wt% Nafion solution. The resulting dispersion was suction-filtered under a pressure of 0.8 MPa to form a membrane. Subsequently, the membrane was removed from the basement membrane, treated with 0.5 M hydrochloric acid at 30 °C for 1.5 h, and then washed with water to remove excess acid. Finally, ionomer-modified two-dimensional boron nitride nanocomposite-based hybrid proton exchange membrane was...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
concentrationaaaaaaaaaa
ionic conductivityaaaaaaaaaa
ionic conductivityaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of membranes, and particularly relates to a two-dimensional boron nitride nano-composite hybrid proton exchange membrane and a preparation method thereof.Firstly, a two-dimensional layered material body is subjected to ultrasonic stripping in an ethanol phase by the aid of an ionomer to obtain an ionomer modified boron nitride nano-composite. Secondly,the composite is prepared into dispersion liquid with a certain concentration, and the ionomer modified two-dimensional boron nitride nano-sheet composite proton exchange membrane is prepared by theaid of pressure. According to the composite proton exchange membrane, local proton transfer led by surface charges is greatly facilitated, and the proton conductivity of the membrane is four times that of Nafion117 under the condition of 80 DEG C-95% RH. The proton exchange membrane has low methanol permeability and high selectivity, the methanol permeability is reduced by one order of magnitude at the temperature of 40 DEG C as compared with a commoditized Nafion117 membrane. The method is simple and convenient to operate and environmentally friendly and has excellent industrial production bases and wide application prospects, and mass production is easily achieved.

Description

technical field [0001] The invention belongs to the field of membrane technology, and in particular relates to a two-dimensional boron nitride nanocomposite-based hybrid proton exchange membrane and a preparation method thereof. Background technique [0002] The proton exchange membrane fuel cell is a power generation device that directly converts the chemical energy in fuel and oxidant into electrical energy by means of electrochemical reaction without combustion. As a clean, efficient and safe green energy source, proton exchange membrane fuel cells have shown broad market prospects and received widespread attention. Proton exchange membrane is a key component of fuel cells, and its performance significantly affects the performance of fuel cells. The most widely used polymer-based proton exchange membranes currently have low proton conductivity due to the small size of ion clusters in the membrane and discontinuous proton transport channels. In addition, such membranes s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1051H01M8/1072
CPCH01M8/1051H01M8/1072Y02E60/50Y02P70/50
Inventor 贾炜武培怡
Owner FUDAN UNIV
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com