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Electrochemical energy conversion devices and cells, and positive electrode-side materials for them

一种能量转换装置、能量转换的技术，应用在电池电极、电化学发生器、燃料电池等方向，能够解决多孔层表面积损失、电化学性能衰减、减小电极层三相界面面积等问题

Active Publication Date: 2016-09-14
SHENZHEN THREE-CIRCLE ELECTRONIC CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0031] Other problems identified for the negative side are: Unexpected persistent sintering of nickel in the porous layer in the negative chamber, especially but not exclusively in the negative side construction of electrochemical cells, including negative electrode materials
This sintering results in the loss of the surface area of ​​the porous layer and reduces the three-phase interface area of ​​the electrode layer, which leads to the decay of electrochemical performance.

Method used

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  • Electrochemical energy conversion devices and cells, and positive electrode-side materials for them
  • Electrochemical energy conversion devices and cells, and positive electrode-side materials for them
  • Electrochemical energy conversion devices and cells, and positive electrode-side materials for them

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Embodiment Construction

[0136] figure 1 It is a cross-sectional view illustrating a planar fuel cell device 10 used for testing the present invention. figure 1 Not to scale and presented for ease of illustration. Device 10 includes fuel cell unit 12 positioned between opposing webs 14 and 16 . In a commercial fuel cell device, multiple such devices 10 are stacked on top of each other, with each pair of adjacent connectors 14 and 16 fabricated on the same single board. As shown, the connection plate 14 is a positive electrode- or cathode-side (cathode-) connection body, and the connection plate 16 is a negative electrode-side (negative electrode-) or anode-side (anode-) connection body. The connection plates are made of high temperature resistant ferritic steel containing chromium (eg Crofer 22H, Crofer 22APU and ZMG 232L).

[0137] Between the webs 14 and 16, the fuel cell unit 12 includes a dense 8YSZ electrolyte layer 18 with a thickness in the range of 5-20 μm (eg, 10 μm) with a doped ceria b...

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Abstract

An electrochemical energy conversion device 10 comprises a stack of solid oxide electrochemical cells 12 alternating with gas separators 14, 16, wherein scavenger material selected from one or both of free alkali metal oxygen-containing compounds and free alkaline earth metal oxygen-containing compounds is provided in or on one or more of the positive electrode-side of the cell 12, the adjacent gas separator 14 and any other structure of the device 10 forming a gas chamber 64 between the cell and the gas separator. The invention also extends to the treated cell 12.

Description

[0001] priority [0002] This application claims priority from Australian Provisional Patent Applications 2014900069 and 2014900070 (priority applications) filed 9 January 2014, the entire contents and disclosure of each of which is incorporated herein by reference. technical field [0003] The present invention relates to electrochemical energy conversion devices and solid oxide electrochemical cells for use in such devices, and in particular the invention relates to reducing the degradation of the electrochemical performance of said cells and said devices. Background technique [0004] Electrochemical energy conversion devices include not only fuel cell systems, but also hydrogen generators and other electrolyzers, for example, for co-electrolysing water and CO 2 the electrolyzer. [0005] Fuel cells convert the chemical energy of gaseous fuels (such as hydrogen, natural gas, gasified coal) directly into electrical energy through an electrochemical process. A fuel cell ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1213
CPCH01M8/0219H01M2004/8684H01M4/8657H01M4/8663H01M2008/1293Y02E60/50H01M8/2432H01M8/1213H01M8/2435H01M8/2425H01M8/1231
Inventor 邱基华陈烁烁
Owner SHENZHEN THREE-CIRCLE ELECTRONIC CO LTD
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