Fuel cell

A fuel cell and fuel technology, applied in the direction of fuel cells, fuel cell components, solid electrolyte fuel cells, etc., can solve the problem of less expensive batteries and achieve low cost effects

Inactive Publication Date: 2001-08-22
朱斌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] While existing sugar-based fuel cell technology offers many of the possibilities described above, there is still a need for batteries that perform better and are less expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0079] In ambient atmosphere, according to the present invention figure 1 The device shown shows an OCV between 0.4 and 0.6V. The current that can be drawn for both electrodes drops rapidly. As long as doped NiO x With hydrogen supplied to the anode and air supplied to the LaSrCoFeO cathode, the OCV rises immediately to about 1.0 V and gradually increases to about 1.5 to 1.8 V over time. When the hydrogen supply was stopped, the OCV first dropped sharply and then gradually decreased with time. These observations indicate that figure 2 . By exchanging the electrode terminals, i.e., hydrogen to LaSrCoFeO, air to doped NiO x Electrodes are supplied to complete further tests. At this time, the device shows an OCV close to the former OCV value but negative (ie opposite sign to the former).

[0080] image 3 Two curves are shown for devices of the invention using different salt electrolytes. Dozens to hundreds of mA / cm 2 can be obtained from this device. A typical curre...

example 2

[0081] Example 2 (electrodeless configuration)

[0082] When using only Gd x Ce 1-x Using an electrolyte instead of electrodes to construct a fuel cell device, the OCV of this 'electrodeless configuration' fuel cell device is 0.96V, which is about 0.2V higher than a conventional device with electrodes and the same electrolyte configuration. But only about 2mA / cm is obtained from the device 2 . This function is based on the ion-conducting Gd x Ce 1-xThe bulk material is an electrolyte that, when reacted with a gas, can cause significant electronic and ionic conduction on each of its surfaces and function as an anode and a cathode, respectively. The performance of the device was found to be limited by the air surface because at the air (or oxygen) end Gd x Ce 1-x Cannot cause sufficient electronic conduction, forming an improved configuration that uses only one electrode such as Pt or Ag (slurry) as the cathode, namely:

[0083] (H 2 )Gd x Ce 1-x / Pt or Ag(air)

[00...

example 3

[0085] Example 3 (utility device)

[0086] Fuel cells using fluoride- and hydrofluoride-based composite electrolytes (proton-conducting type) and cerium oxide-salt (halide) composite electrolytes are typical examples of practical ITCFC devices. Figure 5 An example is shown. All of these new ITCFCs have demonstrated performance well up to current commercial standards. In addition, ITCFCs use sulfate-based electrolytes as highly sulfur-tolerant devices capable of processing fuels with high sulfur content, such as natural gas or by-products from petroleum refining processes, while generating electricity. This sulfur-resistant CFC device is expected to be used as a gas pretreatment station, combined with MCFC power plants to create a new power generation technology.

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Abstract

A fuel cell for production of electrical energy, such as a fuel cell, comprising a fuel chamber (1), an anode (2a), a cathode (2b), an electrolyte (3) disposed between said anode and said cathode, an oxidant chamber (4), wherein said chambers (1 and 4) enclose said anode, cathode and electrolyte, wherein a fuel flowing from the fuel chamber is oxidized at the anode, thereby producing electrical energy, wherein said electrolyte (3) is a ceramic composite electrolyte comprising at least one salt and at least one oxide in mixture.

Description

Field of the invention [0001] The present invention relates to fuel cells, and more particularly the present invention relates to intermediate temperature fuel cells. [0002] The invention also relates to catalysts and membrane reactors, such as hydrogen generators and hydrogen permeation devices. In addition, the present invention also relates to devices for treating harmful gases, such as sulfur removal and waste chlorine gas treatment. Background of the invention [0003] A fuel cell is an electrochemical cell that continuously converts the chemical energy of fuel and oxidant into electrical energy through a process involving an essentially constant electrolyte-electrode system. Fuel cells operate at high efficiencies with emissions well below most stringently regulated standards. Fuel cell systems have the advantage of being modular, so they can be built to accommodate a wide range of power needs, from a few hundred to several megawatts. [0004] The basic fuel cell ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86B01D53/32H01M8/02H01M8/06H01M8/10H01M8/12
CPCH01M8/1016H01M8/124H01M8/0662Y02E60/521Y02E60/525B01D53/326Y02P70/50Y02E60/50H01M8/06H01M8/10H01M8/12
Inventor 朱斌
Owner 朱斌
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