One with β-pbo 2 Method and Application of Particle Modified Carbon Fiber
A technology of carbon fiber and carbon fiber fabric, which is applied in the field of β-PbO2 particle modified carbon fiber electrode materials, can solve the problems of high cost and large-scale application, achieve the increase of exchange current density and reaction rate constant, improve hydrophilicity and cycle performance stable effect
Inactive Publication Date: 2017-01-04
XUCHANG UNIV
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Although the modified carbon fibers significantly improved the positive redox pair VO 2+ / VO 2 + catalytic activity, but the high cost limits its large-scale application
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0027] This embodiment provides a kind of using β-PbO 2 A method for particle modification of carbon fibers, comprising the steps of:
[0028] S1. Carbon fiber pretreatment: Cut the carbon fiber fabric into a suitable size, soak it in 1.0M NaOH solution at 80°C for about 30 minutes to remove impurities such as chopped fibers and oil stains on the surface of the carbon fiber, then wash it with deionized water, and dry it in an oven for later use ;
[0029] S2, the carbon fiber fabric of step S1 gained is sealed in the polyester plastic frame as PbO 2For the deposited working electrode (anode), a large-area graphite plate is used as the counter...
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
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| voltage efficiency | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a method for modifying carbon fibers by using beta-PbO2 particles and application of the method. The beta-PbO2 particles having single crystal forms are successfully modified on the surface of the carbon fibers by a linear scanning voltage method, so that the particle size is uniform, and the deposition amount is controllable; furthermore, a preparation technology is simple, the cost is low, and the method is suitable for large-scale development and utilization; due to the modification beta-PbO2 particles, the hydrophilicity of the carbon fibers is improved, and the surface active sites are increased; the electrochemical activity to VO<2+> / VO<2+> redox reaction of a VFB positive electrode is enhanced, so that the exchange current density and the reaction rate constant are obviously increased; a carbon fiber fabric modified by the beta-PbO2 particles is used as a positive electrode material for assembling an all-vanadium redox flow battery; compared with the battery assembled by the non-modified carbon fiber fabric serving as an electrode material, the all-vanadium redox flow battery assembled by the carbon fiber fabric modified by the beta-PbO2 particles has the advantages that the energy conversion efficiency and the power density are obviously improved, and the long-time circulating performance is stable.
Description
technical field [0001] The invention relates to a method for modifying carbon fibers, in particular to a β-PbO 2 A method for particle modification of carbon fiber electrode materials and its application in all-vanadium redox flow batteries. Background technique [0002] With the excessive consumption of fossil fuels and the aggravation of environmental pollution, governments of various countries are continuously increasing investment in research and development in the field of new energy, and strive to find effective substitutes before the depletion of fossil energy, so as to achieve energy conservation and emission reduction for the international community commitment, and try to grasp the huge business opportunities brought about by new energy technologies. Renewable energy is changing from auxiliary energy to dominant energy, and will set off a large-scale new energy revolution in the future. However, due to the discontinuous and unstable characteristics of renewable en...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M8/18
CPCH01M4/8817H01M8/184Y02E60/50
Inventor 姚川孙红
Owner XUCHANG UNIV