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Bipolar plate material of corrosion-resistant molten carbonate fuel cell and manufacturing technology thereof

A molten carbonate and fuel cell technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of accelerating electrolyte consumption, reducing battery life, and prone to corrosion, so as to reduce high temperature oxidation rate and phase change the effect of the influence

Active Publication Date: 2019-01-29
HUANENG CLEAN ENERGY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the materials used in the bipolar plates of molten carbonate fuel cells are mainly 316L and 310S stainless steel with good corrosion resistance and low cost, but in the high temperature environment of molten carbonate fuel cells, 316L and 310S stainless steel are more likely to occur Corrosion, corrosion leads to a decrease in the mechanical properties of the bipolar plate and accelerates the consumption of the electrolyte, reducing the service life of the battery

Method used

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Examples

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Effect test

Embodiment 1

[0058] Embodiment 1, the present invention provides a corrosion-resistant molten carbonate fuel cell bipolar plate material, including the following components by mass percentage: C: 0.015%; S: 0.005%; P: 0.014%; Si: 0.1% ; Cr: 22%; Ni: 11%; Mn: 4%; Nb: 0.18%; W: 0.88%; N: 0.28%;

[0059] The corrosion-resistant molten carbonate fuel cell bipolar plate material prepared in Example 1 has a weight loss of 14.8 mg / cm after 400-hour immersion test in molten carbonate at 650°C 2 (Stainless steel 316L weight loss rate is 286.5mg / cm 2 ;The weight loss rate of stainless steel 310S is 15mg / cm 2 ); the prepared corrosion-resistant molten carbonate fuel cell bipolar plate material of embodiment 1, through the electrochemical test of 100 hours and 2000 hours, the area specific resistance is respectively 135mΩcm 2 and 115mΩcm 2 .

Embodiment 2

[0060] Embodiment 2, the present invention provides a corrosion-resistant molten carbonate fuel cell bipolar plate material, including the following components by mass percentage: C: 0.03%; S: 0.01%; P: 0.01%; Si: 0.05% ; Cr: 21%; Ni: 10%; Mn: 6%; Nb: 0.2%; W: 0.5%; N: 0.3%;

Embodiment 3

[0061] Embodiment 3, the present invention provides a corrosion-resistant molten carbonate fuel cell bipolar plate material, comprising the following components by mass percentage: C: 0.01%; S: 0.02%; P: 0.03%; Si: 0.01% ; Cr: 25%; Ni: 13%; Mn: 5%; Nb: 0.1%; W: 1%; N: 0.1%;

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PUM

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Abstract

The invention discloses a bipolar plate material of a corrosion-resistant molten carbonate fuel cell and a manufacturing technology thereof. The material is prepared from, by mass, less than or equalto 0.03% of C, less than or equal to 0.02% of S, less than or equal to 0.03% of P, less than or equal to 0.1% of Si, 21-25% of Cr, 10-13% of Ni, 4-6% of Mn, less than or equal to 0.2% of Nb, less thanor equal to 1% of W, less than or equal to 0.3% of N and balance Fe. The bipolar plate material has better corrosion resistance and conductivity in the molten carbonate environment, can effectively prolong the service life of the molten carbonate fuel cell, can be widely applied to energy, ships, aviation and other fields and stainless steel corrosion-resistant tubes, wires, panels and the like.

Description

technical field [0001] The invention belongs to the technical field of molten carbonate fuel cell materials, in particular to a corrosion-resistant molten carbonate fuel cell bipolar plate material and a manufacturing process. Background technique [0002] Molten carbonate fuel cell is a device that converts chemical energy into electrical energy. Compared with traditional coal-fired thermal power technology, its power generation method has the advantages of high efficiency, no pollution, and easy maintenance, so it is called clean power generation in the 21st century. technology. Molten carbonate fuel cell (MCFC) is a high-temperature fuel cell with an operating temperature of 650°C. Compared with other low-temperature fuel cells, it has the advantages of not using noble metal catalysts and having a wide range of fuel sources. It can also be combined with steam turbine equipment to form a cycle power generation system. making its application prospect more promising. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/88
CPCH01M4/8652H01M4/8875H01M2004/8694Y02E60/50
Inventor 卢成壮许世森程健张瑞云王洪建任永强
Owner HUANENG CLEAN ENERGY RES INST
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