A kind of iron tetrasulfide electrode material and its preparation method and application

A technology of iron tetrasulfide and electrode material, applied in battery electrodes, biochemical fuel cells, circuits, etc., can solve the problems of cumbersome reaction operation, low product yield, large product particle size, etc., and achieve complete grain development and particle size. The effect of uniform distribution and small and uniform particle size

Active Publication Date: 2021-08-27
赛帝迦(山东)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the particle size of the product obtained by the above-mentioned preparation method is relatively large, the raw material cost is high, it is not easy to obtain, and the reaction operation is relatively cumbersome.
When the hydrothermal method is used for the reaction, problems such as low product yield, many impurities, and large particle size are often caused by insufficient contact of raw materials.

Method used

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  • A kind of iron tetrasulfide electrode material and its preparation method and application
  • A kind of iron tetrasulfide electrode material and its preparation method and application
  • A kind of iron tetrasulfide electrode material and its preparation method and application

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Embodiment 1

[0036]A kind of iron tetrasulfide electrode material and preparation method thereof, comprise the steps: first, take by weighing 0.56g ferrous sulfate heptahydrate and pour in the polytetrafluoroethylene liner that 35mL deionized water is housed; Add 1200 μL of ethylenediamine to the solution, seal it, and stir magnetically at a speed of 800r / min for 10 minutes; use a pipette gun to absorb 800 μL of carbon disulfide and add it to the solution (the molar ratio of S:Fe is 1:1, add ethylenediamine per mole of iron source amine 600mL), continue to seal and stir at 800r / min for 10min, seal the stirred liquid in the reaction kettle, transfer it to an oven, and keep it warm at 220°C for 6h. Cool naturally, wash with water, ethanol, and water to remove impurities in turn, collect samples by centrifugation, and freeze-dry for 9 hours.

[0037] The scanning electron microscope images of the above examples show a flake structure with a particle size of 50-150 nm, and its composition is o...

Embodiment 2

[0039] A kind of iron tetrasulfide electrode material and preparation method thereof, comprise the steps: first, take by weighing 0.56g ferrous sulfate heptahydrate and pour in the polytetrafluoroethylene liner that 35mL deionized water is housed; Add 800 μL of ethylenediamine to the solution, seal it, and stir magnetically at a speed of 600 r / min for 20 minutes; use a pipette to absorb 800 μL of carbon disulfide and add it to the solution (the molar ratio of S:Fe is 1:1, add ethylenediamine per mole of iron source amine 400mL), continue to seal and stir at a speed of 600r / min for 20min, seal the stirred liquid in the reaction kettle, transfer it to an oven, and keep it warm at 180°C for 12h. Cool naturally, wash with water, ethanol, and water to remove impurities in turn, collect samples by centrifugation, and freeze-dry for 9 hours.

[0040] The scanning electron microscope figure of the iron tetrasulfide prepared by the above examples is as follows figure 1 As shown, the m...

Embodiment 3

[0042] A kind of iron tetrasulfide electrode material and preparation method thereof, comprise the steps: first, take by weighing 0.56g ferrous sulfate heptahydrate and pour in the polytetrafluoroethylene liner that 35mL deionized water is housed; Add 800 μL of ethylenediamine to the solution, seal it, and stir magnetically at a speed of 800 r / min for 20 minutes; use a pipette to absorb 1000 μL of carbon disulfide and add it to the solution (the molar ratio of S:Fe is 5:4, add ethylenediamine per mole of iron source 400mL), continue to seal and stir at a speed of 800r / min for 20min, seal the stirred liquid in the reaction kettle, transfer it to an oven, and keep it warm at 180°C for 9h. Cool naturally, wash with water, ethanol, and water to remove impurities in turn, collect samples by centrifugation, and freeze-dry for 9 hours.

[0043] The scanning electron microscope images of the above examples show a flake structure with a particle size of 100-200 nm, and its composition ...

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Abstract

The invention discloses a triiron tetrasulfide electrode material and its preparation method and application, and relates to the field of water splitting electrocatalysis. The invention uses water-soluble ferrous salt as the iron source and carbon disulfide as the sulfur source, and sequentially prepares before synthesis Finally, the iron-containing sulfide electrode material was prepared by a high-temperature hydrothermal method. The material is a petal-shaped structure composed of nano-sheet crystals, has a large specific surface area, and the particle size of the nano-sheet is 50-200nm. at 10mA·cm ‑2 Under a certain current density, the hydrogen evolution overpotential is 210-230mV, the electrocatalytic performance is good, the chemical stability is strong, and the cost is low. The preparation method is simple and easy, the process is controllable, and it has broad application prospects for electrocatalytic total water splitting to produce hydrogen.

Description

technical field [0001] The invention relates to the field of electrocatalysis for water splitting, in particular to a ferric tetrasulfide electrode material and its preparation method and application, in particular to a nanoscale ferric tetrasulfide material and its preparation method and application. Background technique [0002] At present, the excessive use of fossil fuels has brought enormous pressure on energy and the environment. As a clean, efficient and sustainable new energy source, hydrogen energy has become the focus of attention in the 21st century for its application and research and development. Nowadays, the development of hydrogen production by electrochemical total splitting of water is rapid, but the bottlenecks it faces are: poor catalyst stability and rapid activity decay; excessive chlorine evolution side reactions caused by local pH changes, corrosion and formation of insoluble substances, making hydropower Catalytic production of hydrogen and oxygen mu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M4/90H01M8/16
CPCH01M4/88H01M4/8878H01M4/8882H01M4/9016H01M8/16Y02E60/50
Inventor 韩晓鹏马志慧费峻桢王鹏宇
Owner 赛帝迦(山东)科技有限公司
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