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Glucose hydrothermal carbon and nitrogen co-doped graphite felt electrode and preparation method and application thereof

A graphite felt and glucose technology, which is applied to glucose hydrothermal carbon and nitrogen co-doped graphite felt electrodes and their preparation and application fields, can solve the problems of earth environment destruction, poor cycle stability, poor hydrophilicity, etc., and achieve rich active sites. point effect

Inactive Publication Date: 2019-12-27
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the extensive exploitation and utilization of fossil fuels on the earth, the earth's environment has been severely damaged, coupled with the limited reserves of fossil resources on the earth, energy shortages and environmental pollution have accelerated people's exploration of renewable energy. Fields such as solar energy and wind energy have made great progress, but the intermittency of solar energy and wind energy has hindered its further development. vanadium redox flow battery)[M. Skyllas-Kazacos and R. G.Robins,US Pat.,4786567,1986.]
The all-vanadium oxide flow battery has the advantages of high efficiency, strong charge and discharge capacity, long cycle life, and low energy storage cost. In the late 1980s, M. Rychcik and others first studied the electrodes of the all-vanadium oxide flow battery[ M. Rychcik and M. Skyllas-Kazacos, J. Power sources, 1987,19,45-54], but the current commercial graphite felt still has disadvantages such as poor hydrophilicity, poor cycle stability, and low electrochemical activity.

Method used

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  • Glucose hydrothermal carbon and nitrogen co-doped graphite felt electrode and preparation method and application thereof
  • Glucose hydrothermal carbon and nitrogen co-doped graphite felt electrode and preparation method and application thereof
  • Glucose hydrothermal carbon and nitrogen co-doped graphite felt electrode and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Glucose-urea mixture configuration: Weigh glucose (0.1125g) and urea (0.1125g) into a 50ml beaker, add 30ml deionized water, stir magnetically at room temperature for 30min, and transfer to 50ml water after fully dissolved In a hot kettle, set aside.

[0029] (2) Soaking: Soak the cut graphite felt with a size of 3cm×3cm in the solution in (1) for 6 hours, so that the graphite felt is completely wetted by the solution.

[0030] (3) Hydrothermal treatment: Transfer the hydrothermal kettle in (2) to an oven and heat it at 180°C for 12 hours. After cooling to room temperature, take out the graphite felt co-loaded with glucose hydrothermal carbon and nitrogen, and pump it with deionized water. Filter, and suction filter until the solution is colorless, then transfer to a vacuum oven, and bake at 80°C for 12h.

[0031] (4) Heat stabilization treatment: Put the dried glucose hydrothermal carbon and nitrogen co-doped graphite felt in a tube furnace, and heat at 1000°C for...

Embodiment 2

[0035] (1) Glucose-urea mixture configuration: weigh glucose (0.225g) and urea (0.225g) into a 50ml beaker, add 30ml of deionized water, stir magnetically at room temperature for 30min, and transfer to 50ml of water after they are fully dissolved In a hot kettle, set aside.

[0036] (2) Soaking: Soak the cut graphite felt with a size of 3cm×3cm in the solution in (1) for 6 hours, so that the graphite felt is completely wetted by the solution.

[0037](3) Hydrothermal treatment: Transfer the hydrothermal kettle in (2) to an oven and heat it at 180°C for 12 hours. After cooling to room temperature, take out the graphite felt co-loaded with glucose hydrothermal carbon and nitrogen, and pump it with deionized water. Filter, and suction filter until the solution is colorless, then transfer to a vacuum oven, and bake at 80°C for 12h.

[0038] (4) Heat stabilization treatment: put the dried glucose hydrothermal carbon and nitrogen co-doped graphite felt in a tube furnace, and heat a...

Embodiment 3

[0041] (1) Glucose-urea mixture configuration: weigh glucose (0.45g) and urea (0.45g) into a 50ml beaker, add 30ml of deionized water, stir magnetically at room temperature for 30min, and transfer to 50ml of water after fully dissolved In a hot kettle, set aside.

[0042] (2) Soaking: Soak the cut graphite felt with a size of 3cm×3cm in the solution in (1) for 6 hours, so that the graphite felt is completely wetted by the solution.

[0043] (3) Hydrothermal treatment: Transfer the hydrothermal kettle in (2) to an oven and heat it at 180°C for 12 hours. After cooling to room temperature, take out the graphite felt co-loaded with glucose hydrothermal carbon and nitrogen, and pump it with deionized water. Filter, and suction filter until the solution is colorless, then transfer to a vacuum oven, and bake at 80°C for 12h.

[0044] (4) Heat stabilization treatment: put the dried glucose hydrothermal carbon and nitrogen co-doped graphite felt in a tube furnace, and heat at 1000°C f...

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Abstract

The invention belongs to the field of an electrode material and a preparation method and an application thereof and particularly relates to a glucose hydrothermal carbon and nitrogen co-doped graphitefelt electrode and the preparation method and the application thereof. The preparation method is characterized in that glucose, urea and carbon felt are used as raw materials, and the glucose hydrothermal carbon and nitrogen co-doped graphite felt composite material is synthesized through hydrothermal and high-temperature calcination. The method is advantaged in that the technical defect that anelectrode material prepared in the prior art is unstable in cycle performance is overcome, the composite electrode prepared is good in hydrophilicity, electron transfer resistance is effectively reduced, and thereby energy efficiency and the energy output of VRFB are improved.

Description

technical field [0001] The invention belongs to the field of electrode materials and their preparation and application, in particular to a glucose hydrothermal carbon and nitrogen co-doped graphite felt electrode and its preparation and application. Background technique [0002] With the extensive exploitation and utilization of fossil fuels on the earth, the earth's environment has been severely damaged, coupled with the limited reserves of fossil resources on the earth, energy shortages and environmental pollution have accelerated people's exploration of renewable energy. Fields such as solar energy and wind energy have made great progress, but the intermittency of solar energy and wind energy has hindered its further development. vanadium redox flow battery) [M. Skyllas-Kazacos and R. G. Robins, US Pat., 4786567, 1986.]. The all-vanadium oxide flow battery has the advantages of high efficiency, strong charge and discharge capacity, long cycle life, and low energy storage...

Claims

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Application Information

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IPC IPC(8): H01M4/96H01M4/88H01M8/18
CPCH01M4/8882H01M4/96H01M8/188Y02E60/50
Inventor 谢在来邱九根
Owner FUZHOU UNIV
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