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A tubular double-ion electrolytic cell

A dual-ion, electrolytic cell technology, applied in the field of electrolytic cells, can solve the problems of increasing gas diffusion polarization potential, affecting hydrogen conversion efficiency, complex battery structure, etc., and achieves the effects of increasing anode active area, controlling hydrogen leakage, and optimizing efficiency

Active Publication Date: 2018-08-28
NAT ENG RES CENT OF ADVANCED ENERGY STORAGE MATERIALS SHEN ZHEN LTD CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The battery structure in this patent document is relatively complicated. The active layer of the water electrolysis reaction is the porous cathode of the electrochemical pump and the porous anode of the high-temperature steam electrolytic cell battery. The porous thick layer intermingled in the middle does not participate in the reaction. Diffusion polarization potential, which affects the conversion efficiency of hydrogen

Method used

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  • A tubular double-ion electrolytic cell

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Effect test

Embodiment 1

[0018] A tubular double-ion type electrolytic cell, such as figure 1 As shown, including a metal tube 1, an oxygen channel 2, a cathode 3, a cathode electrolyte layer 4, a water vapor channel 5, an anode electrolyte layer 6, an anode 7 and hydrogen channel 8, the outer shell of metal tube 1 is made of high temperature resistant metal or composite material, and its pressure resistance is 5bar; the inner shell of metal tube 1 is made of composite material, and its pressure resistance is 10 bar, and the metal tube The length of 1 is about 1m, the outer diameter of the metal tube shell (that is, the outer diameter of the entire electrolytic cell) is about 1cm, and the inner diameter of the hydrogen flow channel (that is, the inner diameter of the entire electrolytic cell) is about 0.4cm; the catholyte layer 4 is a thin film The dense YDC ceramic material, the anode electrolyte layer 6 is a thin film and dense BCY ceramic material, the thickness of the cathode electrolyte layer 4 a...

Embodiment 2

[0021] A kind of tubular double-ion type electrolytic cell, its structure is similar to a kind of tubular double-ion type electrolytic cell in embodiment 1, and its difference is:

[0022] 1. The pressure resistance of the outer shell of the metal pipe is 7.5bar, and the pressure resistance of the inner shell of the metal pipe is 15bar;

[0023] 2. The thickness of the cathode is 150 μm and the porosity is 50%; the thickness of the anode is 75 μm and the porosity is 50%; the thickness of the water vapor channel is 300 μm;

[0024] 3. The pressure control of oxygen channel, water vapor channel and hydrogen channel is 0.75 bar;

[0025] 4. Both the cathode electrolyte layer and the anode electrolyte layer have a thickness of 30 μm;

[0026] 5. Argon is used as the carrier for the gas flow in the oxygen channel, water vapor channel and hydrogen channel.

Embodiment 3

[0028] A kind of tubular double-ion type electrolytic cell, its structure is similar to a kind of tubular double-ion type electrolytic cell in embodiment 1, and its difference is:

[0029] 1. The pressure resistance of the outer shell of the metal pipe is 10bar, and the pressure resistance of the inner shell of the metal pipe is 20bar;

[0030] 2. The thickness of the cathode is 200 μm and the porosity is 60%; the thickness of the anode is 100 μm and the porosity is 60%; the thickness of the water vapor channel is 500 μm;

[0031] 3. The pressure control of oxygen channel, water vapor channel and hydrogen channel is 1.0 bar;

[0032] 4. Both the cathode electrolyte layer and the anode electrolyte layer have a thickness of 50 μm;

[0033] 5. The gas flow in the oxygen channel, water vapor channel and hydrogen channel adopts the mixed gas of nitrogen and argon as the carrier.

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Abstract

The invention provides a tubular double-ion electrolytic cell, which comprises a metal tube, and an oxygen channel, a cathode, a cathode electrolyte layer, a water vapor channel, Anolyte layer, anode and hydrogen channels. The tubular double-ion electrolytic cell of the present invention has a simple structure, the gas concentration polarization potential can be greatly reduced, and the hydrogen production efficiency by hydrolysis can be increased to over 70%.

Description

technical field [0001] The invention relates to an electrolytic cell, in particular to a tubular double-ion electrolytic cell. Background technique [0002] Power-to-Gas is one of the development trends of distributed energy technology, which converts electrical energy into stable hydrogen by electrolyzing water. Hydrogen is transported through natural gas pipelines, or it can be compressed into high-pressure gas tanks, and transported to power-using areas by means of transportation to solve off-grid power demand. The role of hydrogen can also be reflected in the low-cost electricity, which can be converted into stable chemical substances for storage when the electricity is low, and can be used to supply electricity during periods of power shortage, and play the role of peak-shaving and valley-filling. [0003] Common electrolytic water technologies are divided into alkaline electrolytic water technology and high-temperature electrolytic water technology. From the perspecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/10C25B1/12C25B13/04C25B13/02C25B9/06C25B9/08C25B9/17C25B9/19
CPCC25B13/02C25B13/04C25B1/04C25B9/05C25B9/73C25B9/17C25B9/19Y02E60/36
Inventor 钟发平欧腾蛟陈功哲
Owner NAT ENG RES CENT OF ADVANCED ENERGY STORAGE MATERIALS SHEN ZHEN LTD CO
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