Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Preparation and application of plasma-treated ultrathin ternary nanosheet FePSe3 for bifunctional electrocatalyst of air electrode of high-efficiency zinc air battery

A bifunctional catalyst, zinc-air battery technology, applied in fuel cell type half cells and secondary cell type half cells, battery electrodes, nanotechnology for materials and surface science, etc., can solve the obstacles to wide application, High cost, scarcity, limited reserves, etc.

Inactive Publication Date: 2021-12-07
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, their wide application is greatly hindered due to their limited reserves, high cost and scarcity.

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
  • Preparation and application of plasma-treated ultrathin ternary nanosheet FePSe3 for bifunctional electrocatalyst of air electrode of high-efficiency zinc air battery
  • Preparation and application of plasma-treated ultrathin ternary nanosheet FePSe3 for bifunctional electrocatalyst of air electrode of high-efficiency zinc air battery
  • Preparation and application of plasma-treated ultrathin ternary nanosheet FePSe3 for bifunctional electrocatalyst of air electrode of high-efficiency zinc air battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) FePSe 3 Crystal preparation. Weigh Fe powder (50nm), P powder and Se powder according to the molar mass ratio of 1:1:3 to weigh a total of 500mg, and seal it in a quartz tube under vacuum. The inner diameter of the quartz tube is about 16mm and the length is about 15cm. Use the CVT method Heat to 750°C in a box furnace and keep for 7 days with a heating rate of 2°C / min. After cooling to room temperature, the bulk FePSe 3 Crystals, ground to a homogeneous powder and stored in a dry cabinet.

[0025] (2) FePSe 3 Preparation of nanosheets. Weigh 200mg block of FePSe 3 The crystals were dispersed in absolute ethanol solution and ultrasonically treated to obtain uniformly dispersed black FePSe 3 The ethanol mixed solution was stripped by tip ultrasonic treatment, and the mixed solution was centrifuged at 1000rpm for 3 times, half an hour each time, and the supernatant was separated and collected. Absolute ethanol was centrifuged at 6000rpm 3 times for half an hour...

Embodiment 2

[0032] Prepare comparative sample substantially according to the method identical with embodiment 1, difference is not carrying out plasma processing after tip ultrasonic stripping treatment, obtains comparative sample catalyst FePSe 3 Nanosheets.

[0033] (1) FePSe 3 Crystal preparation. Weigh Fe powder (50nm), P powder and Se powder according to the molar mass ratio of 1:1:3 to weigh a total of 500mg, and seal it in a quartz tube under vacuum. The inner diameter of the quartz tube is about 16mm and the length is about 15cm. Use the CVT method Heat to 750°C in a box furnace and keep for 7 days with a heating rate of 2°C / min. After cooling to room temperature, the bulk FePSe 3 Crystals, ground to a homogeneous powder and stored in a dry cabinet.

[0034] (2) FePSe 3 Preparation of nanosheets. Weigh 200mg block of FePSe 3 The crystals were dispersed in absolute ethanol solution and ultrasonically treated to obtain uniformly dispersed black FePSe 3 The ethanol mixed solu...

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

No PUM Login to View More

Abstract

The invention relates to a preparation method and application of a bifunctional electrocatalyst FePSe3 for an air electrode of an efficient zinc air battery, and belongs to the technical field of metal air batteries. The preparation method of the catalyst for the air electrode comprises the following steps: (1) preparing a ternary transition metal phosphorus selenium compound FePSe3 by a chemical vapor deposition method; (2) performing ultrasonic stripping to obtain an ultrathin two-dimensional nanosheet; (3) performing Ar / O2 plasma treatment on the obtained two-dimensional nanosheet to induce surface recombination. Through ultrasonic stripping and plasma treatment, oxygen atom doping brings excellent oxygen electrocatalytic activity. The zinc-air battery prepared by adopting the air electrode catalyst disclosed by the invention has a smaller charging voltage gap and good cycling stability. The work provides a new insight for reasonably designing plasma treatment of the two-dimensional nanosheet so as to optimize a bifunctional oxygen electrocatalyst for an air electrode of a metal-air battery.

Description

technical field [0001] The invention relates to an ultra-thin ternary transition metal phosphorus-sulfur compound nanosheet doped with oxygen atoms as an air electrode material of a metal-air battery, belonging to the technical field of metal-air batteries. Background technique [0002] To address the increasing global energy demand and increasing environmental pollution, clean, high-capacity, and renewable energy storage devices, such as regenerative fuel cells and metal-air batteries, are key components for reducing fossil fuel consumption. Among them, zinc-air batteries (ZABs) have been extensively studied due to their high theoretical energy density, high safety, and low cost. The efficiency of oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) is greatly limited by slow kinetics, involving four sequential proton-coupled electron transfer steps. Therefore, it is crucial to seek highly efficient oxygen electrocatalysts. Generally, Pt, a noble metal cata...

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): H01M4/90H01M4/88H01M12/08B82Y30/00B82Y40/00
CPCH01M4/90H01M4/8825H01M4/8878H01M12/08B82Y30/00B82Y40/00
Inventor 彭生杰郝亚楠
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com