JP2001102075A - Solid electrolyte fuel cell - Google Patents
Solid electrolyte fuel cellInfo
- Publication number
- JP2001102075A JP2001102075A JP27686799A JP27686799A JP2001102075A JP 2001102075 A JP2001102075 A JP 2001102075A JP 27686799 A JP27686799 A JP 27686799A JP 27686799 A JP27686799 A JP 27686799A JP 2001102075 A JP2001102075 A JP 2001102075A
- Authority
- JP
- Japan
- Prior art keywords
- fuel cell
- solid oxide
- oxide fuel
- oxygen
- containing gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Fuel Cell (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、固体電解質型燃料
電池に関し、特に、発熱体を有する固体電解質型燃料電
池に関する。The present invention relates to a solid oxide fuel cell, and more particularly, to a solid oxide fuel cell having a heating element.
【０００２】[0002]
【従来技術】固体電解質型燃料電池は、図１に示すよう
に、反応容器１内に、酸素含有ガス室仕切板２、燃焼室
仕切板３、燃料ガス室仕切板５を用いて酸素含有ガス室
Ａ、燃焼室Ｂ、反応室Ｃ、燃料ガス室Ｄが形成されてい
る。2. Description of the Related Art As shown in FIG. 1, a solid oxide fuel cell uses an oxygen-containing gas chamber partition plate 2, a combustion chamber partition plate 3, and a fuel gas chamber partition plate 5 in a reaction vessel 1. A chamber A, a combustion chamber B, a reaction chamber C, and a fuel gas chamber D are formed.
【０００３】反応容器１内には、複数の有底筒状の固体
電解質型燃料電池セル７が収容されており、これらの固
体電解質型燃料電池セル７は、燃焼室仕切板３に形成さ
れたセル挿入孔に挿入固定されており、また、その内部
には酸素含有ガス室仕切板２に固定された酸素含有ガス
導入管９の一端が挿入されている。A plurality of bottomed cylindrical solid oxide fuel cells 7 are accommodated in a reaction vessel 1, and these solid oxide fuel cells 7 are formed on a combustion chamber partition plate 3. One end of an oxygen-containing gas introducing pipe 9 fixed to the oxygen-containing gas chamber partition plate 2 is inserted and fixed in the cell insertion hole.
【０００４】燃焼室仕切板３には、図示しないが、余剰
の燃料ガスを燃焼室Ｂに導入するための燃料ガス噴出孔
が形成されており、燃料ガス室仕切板５には、図示しな
いが、燃料ガスを反応室Ｃ内に供給するための供給孔が
形成されている。[0004] Although not shown, the combustion chamber partition plate 3 is provided with a fuel gas ejection hole for introducing surplus fuel gas into the combustion chamber B, and the fuel gas chamber partition plate 5 is provided with a fuel gas ejection hole (not shown). A supply hole for supplying the fuel gas into the reaction chamber C is formed.
【０００５】また、反応容器１には、例えば水素からな
る燃料ガスを導入する燃料ガス導入口１３、酸素含有ガ
ス、例えば空気を導入する酸素含有ガス導入口１７、燃
焼室Ｂ内で燃焼したガスを排出するための排気口１９が
形成されている。The reaction vessel 1 has a fuel gas inlet 13 for introducing a fuel gas composed of, for example, hydrogen, an oxygen-containing gas such as an oxygen-containing gas inlet 17 for introducing air, and a gas burned in the combustion chamber B. An exhaust port 19 for discharging air is formed.
【０００６】このような固体電解質型燃料電池は、酸素
含有ガス室Ａからの酸素含有ガス、例えば空気を、酸素
含有ガス導入管９を介して固体電解質型燃料電池セル７
内にそれぞれ供給し、かつ、燃料ガス室Ｄからの燃料ガ
スを複数の固体電解質型燃料電池セル７間に供給し、反
応室Ｃにて反応させ、余剰の空気と燃料ガスを燃焼室Ｂ
にて燃焼させ、燃焼したガスが排気口１９から外部に排
出される。In such a solid oxide fuel cell, the oxygen-containing gas, for example, air from the oxygen-containing gas chamber A is supplied to the solid oxide fuel cell 7 through the oxygen-containing gas introducing pipe 9.
And the fuel gas from the fuel gas chamber D is supplied between the plurality of solid oxide fuel cells 7 and reacted in the reaction chamber C, and the excess air and fuel gas are removed from the combustion chamber B.
The burned gas is exhausted from the exhaust port 19 to the outside.
【０００７】ところで、固体電解質型燃料電池は、固体
電解質型燃料電池セル７を約１０００℃という高温で動
作させるため、装置立ち上げの際は、酸素含有ガス、例
えば空気を外部でプレヒートした後、酸素含有ガス導入
口１７より酸素含有ガス室Ａ内に導入し、酸素含有ガス
室Ａから酸素含有ガス導入管９を介して固体電解質型燃
料電池セル７内にそれぞれ供給され、このプレヒートさ
れた空気により固体電解質型燃料電池セル７を昇温して
いた。In the solid oxide fuel cell, since the solid oxide fuel cell 7 is operated at a high temperature of about 1000 ° C., at the time of starting the apparatus, an oxygen-containing gas, for example, air is preheated outside. The preheated air is introduced into the oxygen-containing gas chamber A from the oxygen-containing gas inlet 17 and supplied from the oxygen-containing gas chamber A into the solid oxide fuel cell unit 7 via the oxygen-containing gas introduction pipe 9. As a result, the temperature of the solid oxide fuel cell unit 7 was raised.
【０００８】さらに、燃料ガス室Ｄから複数の固体電解
質型燃料電池セル７間を通過し、燃焼室仕切板３の燃料
ガス噴出孔より噴出した余剰の燃料ガスと、固体電解質
型燃料電池セル７内を通過した空気が、燃焼室Ｂ内にて
燃焼し、この熱により酸素含有ガス導入管９を暖め、そ
の内部を通過する空気を暖めることによって固体電解質
型燃料電池セル７を昇温していた。Further, surplus fuel gas passing from the fuel gas chamber D through the plurality of solid oxide fuel cells 7 and jetting from the fuel gas jet holes of the combustion chamber partition plate 3, and solid fuel cells 7. The air that has passed through the inside is burned in the combustion chamber B, and the heat heats the oxygen-containing gas introduction pipe 9 and the air that passes through the inside of the pipe, thereby raising the temperature of the solid oxide fuel cell 7. Was.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、上記の
ような方法では、反応容器１内に導入する前に酸素含有
ガスを加熱し、この加熱した酸素含有ガスを反応容器１
内に導入することで固体電解質型燃料電池セル７を昇温
したり、余剰の燃料ガスと酸素含有ガスの燃焼により、
酸素含有ガス導入管９内の酸素含有ガスを加熱し、この
加熱した酸素含有ガスの循環により固体電解質型燃料電
池セル７を昇温していたため、加熱した酸素含有ガスと
反応容器１内に導入する経路が長くなり、酸素含有ガス
と固体電解質型燃料電池セル７間の熱交換効率が低く、
固体電解質型燃料電池セル７を加熱するのに時間がかか
り、固体電解質型燃料電池が作動するのに長時間を要す
という問題があった。However, in the above-described method, the oxygen-containing gas is heated before being introduced into the reaction vessel 1, and the heated oxygen-containing gas is supplied to the reaction vessel 1.
The temperature of the solid oxide fuel cell 7 is increased by introducing it into the fuel cell, or combustion of surplus fuel gas and oxygen-containing gas causes
Since the oxygen-containing gas in the oxygen-containing gas introduction pipe 9 was heated, and the temperature of the solid oxide fuel cell 7 was increased by the circulation of the heated oxygen-containing gas, the heated oxygen-containing gas was introduced into the reaction vessel 1. And the heat exchange efficiency between the oxygen-containing gas and the solid oxide fuel cell 7 is low,
There is a problem that it takes time to heat the solid oxide fuel cell 7, and it takes a long time for the solid oxide fuel cell to operate.
【００１０】さらに起動時間が長いため、電力を必要な
時に迅速に取り出せるように、常時固体電解質型燃料電
池セル７を加熱しておく必要があり、無駄なエネルギー
を消費するという問題も生じていた。Further, since the start-up time is long, it is necessary to constantly heat the solid oxide fuel cell 7 so that electric power can be quickly taken out when needed, thus causing a problem that wasteful energy is consumed. .
【００１１】本発明は、固体電解質型燃料電池セルを急
速に昇温でき、これにより動作開始時間を短縮できると
ともに、固体電解質型燃料電池セルの保温のための無駄
なエネルギー消費をなくすことができる固体電解質型燃
料電池を提供することを目的とする。According to the present invention, the temperature of the solid oxide fuel cell can be rapidly raised, thereby shortening the operation start time and eliminating unnecessary energy consumption for keeping the solid oxide fuel cell warm. It is an object to provide a solid oxide fuel cell.
【００１２】[0012]
【課題を解決するための手段】本発明の固体電解質型燃
料電池は、反応容器内に、固体電解質の内面に空気極
を、外面に燃料極を形成してなる円筒状の固体電解質型
燃料電池セルを複数収容するとともに、前記固体電解質
型燃料電池セル内に酸素含有ガス導入管を挿入してなる
固体電解質型燃料電池において、前記酸素含有ガス導入
管および／または前記固体電解質型燃料電池セルに発熱
体を設けたものである。SUMMARY OF THE INVENTION A solid oxide fuel cell according to the present invention is a cylindrical solid oxide fuel cell comprising an air electrode formed on an inner surface of a solid electrolyte and a fuel electrode formed on an outer surface in a reaction vessel. A solid electrolyte fuel cell comprising a plurality of cells and inserting an oxygen-containing gas inlet tube into the solid oxide fuel cell, wherein the oxygen-containing gas inlet tube and / or the solid oxide fuel cell is A heating element is provided.
【００１３】このような構成を採用することにより、固
体電解質型燃料電池セルを急速に昇温でき、迅速に発電
状態に立ち上げることができ、起動性に優れた固体電解
質型燃料電池を得ることができる。By employing such a configuration, it is possible to rapidly raise the temperature of the solid oxide fuel cell, quickly start up the power generation state, and obtain a solid oxide fuel cell excellent in startability. Can be.
【００１４】また、酸素含有ガス導入管の固体電解質型
燃料電池セル内における外側表面に発熱体が形成され、
該発熱体が絶縁層により被覆されていることが望まし
い。このような構成では、酸素含有ガス導入管により、
例えば、空気からなる酸素含有ガスが固体電解質型燃料
電池セル内に導入されるが、酸素含有ガス導入管の外側
表面に形成された発熱体により、酸素含有ガス導入管内
部を流れる空気や、酸素含有ガス導入管と固体電解質型
燃料電池セル間を流れる空気を加熱することができ、加
熱された空気によって固体電解質型燃料電池セルを昇温
できるとともに、固体電解質型燃料電池セルが発熱体の
近傍に配置されているため、輻射熱により固体電解質型
燃料電池セルを急速に昇温できる。[0014] A heating element is formed on the outer surface of the oxygen-containing gas introduction pipe in the solid oxide fuel cell,
It is desirable that the heating element be covered with an insulating layer. In such a configuration, the oxygen-containing gas introduction pipe
For example, an oxygen-containing gas consisting of air is introduced into the solid oxide fuel cell, and a heating element formed on the outer surface of the oxygen-containing gas introduction tube causes air flowing inside the oxygen-containing gas introduction tube or oxygen. The air flowing between the gas introduction pipe and the solid oxide fuel cell can be heated, the solid electrolyte fuel cell can be heated by the heated air, and the solid oxide fuel cell is located near the heating element. , The temperature of the solid oxide fuel cell unit can be rapidly raised by radiant heat.
【００１５】また、このような構成では、固体電解質型
燃料電池セル内面の空気極と、酸素含有ガス導入管の外
側表面との間隔が狭いため、酸素含有ガス導入管の外側
表面に形成された発熱体が空気極と接触する虞がある
が、絶縁層が発熱体を被覆しているため、固体電解質型
燃料電池セルの内面に酸素含有ガス導入管が接触して
も、発熱体を流れる電流が固体電解質型燃料電池セルに
流れることがなく、このため、確実に発熱体を加熱で
き、損失なく燃料電池セルを昇温できる。Further, in such a configuration, since the distance between the air electrode on the inner surface of the solid oxide fuel cell and the outer surface of the oxygen-containing gas inlet tube is narrow, the air electrode is formed on the outer surface of the oxygen-containing gas inlet tube. Although the heating element may come into contact with the air electrode, since the insulating layer covers the heating element, even if the oxygen-containing gas introduction pipe contacts the inner surface of the solid oxide fuel cell, the current flowing through the heating element Does not flow to the solid oxide fuel cell, and therefore the heating element can be reliably heated, and the temperature of the fuel cell can be increased without loss.
【００１６】さらに、発熱体を被覆する絶縁層は、Ａｌ
2 Ｏ3 、ＭｇＯおよびＺｒＯ2 のうち少なくとも１種を
主成分とすることが望ましい。Ａｌ2 Ｏ3 、ＭｇＯ、Ｚ
ｒＯ2 は耐熱性を有するため、１０００℃での連続運転
に使用できる。中でもＡｌ2Ｏ3 は熱伝導性が良好なた
め、固体電解質型燃料電池セルを急速に昇温させること
ができる。Further, the insulating layer covering the heating element is made of Al
It is desirable that at least one of 2 O 3 , MgO and ZrO 2 be the main component. Al 2 O 3 , MgO, Z
Since rO 2 has heat resistance, it can be used for continuous operation at 1000 ° C. Above all, Al 2 O 3 has good thermal conductivity, so that the temperature of the solid oxide fuel cell can be rapidly raised.
【００１７】また、固体電解質型燃料電池セルの空気極
に発熱体が内蔵されていることが望ましい。このような
構成を採用することにより、固体電解質型燃料電池セル
を直接加熱できるため、急速に加熱することができる。It is desirable that a heating element is built in the air electrode of the solid oxide fuel cell. By employing such a configuration, the solid oxide fuel cell unit can be directly heated, and thus can be rapidly heated.
【００１８】[0018]
【発明の実施の形態】本発明の固体電解質型燃料電池
は、固体電解質型燃料電池セルの空気極に発熱体を内蔵
した点、酸素含有ガス導入管に発熱体を形成した点を除
いて実質的に従来と同様の構造を有しているため、本発
明の固体電解質型燃料電池を、図１で説明する。BEST MODE FOR CARRYING OUT THE INVENTION A solid oxide fuel cell according to the present invention is substantially the same as the solid oxide fuel cell except that a heating element is incorporated in an air electrode and a heating element is formed in an oxygen-containing gas introducing pipe. Since it has the same structure as the conventional one, the solid oxide fuel cell of the present invention will be described with reference to FIG.
【００１９】即ち、固体電解質型燃料電池は、図１に示
すように、反応容器１内に、酸素含有ガス室仕切板２、
燃焼室仕切板３、燃料ガス室仕切板５を用いて酸素含有
ガス室Ａ、燃焼室Ｂ、反応室Ｃ、燃料ガス室Ｄが形成さ
れている。That is, as shown in FIG. 1, a solid oxide fuel cell comprises an oxygen-containing gas chamber partition plate 2,
An oxygen-containing gas chamber A, a combustion chamber B, a reaction chamber C, and a fuel gas chamber D are formed using the combustion chamber partition plate 3 and the fuel gas chamber partition plate 5.
【００２０】反応容器１内には、複数の有底筒状の固体
電解質型燃料電池セル７が収容されており、これらの固
体電解質型燃料電池セル７は、燃焼室仕切板３に形成さ
れたセル挿入孔に挿入固定されており、また、その内部
には酸素含有ガス室仕切板２に固定された酸素含有ガス
導入管９の一端が挿入されている。A plurality of bottomed cylindrical solid oxide fuel cells 7 are accommodated in the reaction vessel 1, and these solid oxide fuel cells 7 are formed on the combustion chamber partition plate 3. One end of an oxygen-containing gas introducing pipe 9 fixed to the oxygen-containing gas chamber partition plate 2 is inserted and fixed in the cell insertion hole.
【００２１】燃焼室仕切板３には、図示しないが、余剰
の燃料ガスを燃焼室Ｂに導入するための燃料ガス噴出孔
が形成されており、燃料ガス室仕切板５には、図示しな
いが、燃料ガスを反応室Ｃ内に供給するための供給孔が
形成されている。Although not shown, the combustion chamber partition plate 3 is provided with a fuel gas ejection hole for introducing excess fuel gas into the combustion chamber B, and the fuel gas chamber partition plate 5 is provided with a fuel gas discharge hole (not shown). A supply hole for supplying the fuel gas into the reaction chamber C is formed.
【００２２】また、反応容器１には、例えば水素からな
る燃料ガスを導入する燃料ガス導入口１３、酸素含有ガ
ス、例えば空気を導入する酸素含有ガス導入口１７、燃
焼室Ｂ内で燃焼したガスを排出するための排気口１９が
形成されている。The reaction vessel 1 has a fuel gas inlet 13 for introducing a fuel gas composed of, for example, hydrogen, an oxygen-containing gas such as an oxygen-containing gas inlet 17 for introducing air, and a gas burned in the combustion chamber B. An exhaust port 19 for discharging air is formed.
【００２３】固体電解質型燃料電池セル７は、図２に示
すように、例えば、支持管としてのＬａＭｎＯ3 系空気
極２１と、この空気極２１の表面に形成されたＹ2 Ｏ3
安定化ＺｒＯ2 からなる固体電解質２２と、固体電解質
２２の表面に形成されたＮｉ一ジルコニア系の燃料極２
３と、空気極２１と電気的に接続されるＬａＣｒＯ3系
よりなるインターコネクタ２４とから構成されている。As shown in FIG. 2, the solid oxide fuel cell 7 includes, for example, a LaMnO 3 -based air electrode 21 as a support tube, and Y 2 O 3 formed on the surface of the air electrode 21.
A solid electrolyte 22 made of stabilized ZrO 2, and a Ni-zirconia-based fuel electrode 2 formed on the surface of the solid electrolyte 22
3 and an interconnector 24 made of LaCrO 3 and electrically connected to the air electrode 21.
【００２４】そして、図３に示すように、一方のセル７
のインターコネクタ２４を、Ｎｉ金属繊維等の接続部材
２５を介して他方のセル７の燃料極２３に接続して、複
数のセル７が電気的に接続され、スタック２７が構成さ
れており、このようなスタック２７が、図１に示したよ
うに、反応容器１内に複数収容されて固体電解質型燃料
電池が構成されている。Then, as shown in FIG.
Is connected to the fuel electrode 23 of the other cell 7 via a connecting member 25 such as Ni metal fiber, so that a plurality of cells 7 are electrically connected to form a stack 27. As shown in FIG. 1, a plurality of such stacks 27 are accommodated in the reaction vessel 1 to constitute a solid oxide fuel cell.
【００２５】そして、本発明の固体電解質型燃料電池で
は、図４に示すように、セル７内部における酸素含有ガ
ス導入管９の外面に発熱体３１が形成されており、この
発熱体３１が、図４（ｂ）に示すように、絶縁層３３に
より被覆されている。この絶縁層３３は、１０００℃で
の高温でも耐久性を有するという点から、ＺｒＯ2 、Ｍ
ｇＯおよびＡｌ2 Ｏ3 のうち少なくとも一種を主成分と
するものが望ましい。Further, in the solid oxide fuel cell of the present invention, as shown in FIG. 4, a heating element 31 is formed on the outer surface of the oxygen-containing gas introducing pipe 9 inside the cell 7, and this heating element 31 As shown in FIG. 4B, it is covered with an insulating layer 33. This insulating layer 33 is made of ZrO 2 , M
It is desirable that at least one of gO and Al 2 O 3 be the main component.
【００２６】特に、熱伝導が良好という観点からＡｌ2
Ｏ3 が望ましい。尚、図４（ａ）では絶縁層３３は省略
した。In particular, from the viewpoint of good heat conduction, Al 2
O 3 is preferred. In FIG. 4A, the insulating layer 33 is omitted.
【００２７】発熱体３１は、図４（ａ）の上方に向けて
引き出され、空気室Ａで、直並列に接続され、燃料電池
の外部に取り出され、外部電源に接続されている。The heating element 31 is drawn upward in FIG. 4A, connected in series and parallel in the air chamber A, taken out of the fuel cell, and connected to an external power supply.
【００２８】以上のように構成された固体電解質型燃料
電池では、酸素含有ガス室Ａからの酸素含有ガス、例え
ば空気を、酸素含有ガス導入管９を介して固体電解質型
燃料電池セル７内にそれぞれ供給し、かつ、燃料ガス室
Ｄからの燃料ガスを複数の固体電解質型燃料電池セル７
間に供給し、反応室Ｃにて反応させ、余剰の空気と燃料
ガスを燃焼室Ｂにて燃焼させ、燃焼したガスが排気口１
９から外部に排出される。In the solid oxide fuel cell configured as described above, the oxygen-containing gas, for example, air from the oxygen-containing gas chamber A is introduced into the solid oxide fuel cell 7 through the oxygen-containing gas introducing pipe 9. Each of the plurality of solid oxide fuel cells 7 supplies fuel gas from the fuel gas chamber D and
And reacts in the reaction chamber C, and burns excess air and fuel gas in the combustion chamber B.
9 to the outside.
【００２９】そして、本発明の固体電解質型燃料電池で
は、酸素含有ガス導入管９の外側表面に発熱体３１が形
成されているので、酸素含有ガス導入管９内を流通する
空気や、酸素含有ガス導入管９の外面とセル７の内面と
の間を流通する空気が、酸素含有ガス導入管９の外側表
面の発熱体３１により加熱され、この加熱された空気に
よりセル７を急速に昇温できる。また、同時に、セル７
が発熱体３１の近傍に配置されているため、輻射熱によ
りセル７を動作温度である１０００℃まで急速に昇温で
き、このため、固体電解質型燃料電池を迅速に発電状態
に立ち上げることができ、起動性に優れた固体電解質型
燃料電池を得ることができる。In the solid oxide fuel cell according to the present invention, since the heating element 31 is formed on the outer surface of the oxygen-containing gas introduction pipe 9, air flowing through the oxygen-containing gas introduction pipe 9 and oxygen-containing gas The air flowing between the outer surface of the gas inlet tube 9 and the inner surface of the cell 7 is heated by the heating element 31 on the outer surface of the oxygen-containing gas inlet tube 9, and the heated air rapidly raises the temperature of the cell 7. it can. At the same time, cell 7
Is disposed near the heating element 31, the temperature of the cell 7 can be rapidly raised to the operating temperature of 1000 ° C. by radiant heat, and therefore, the solid oxide fuel cell can be quickly brought into the power generation state. Thus, a solid oxide fuel cell having excellent start-up properties can be obtained.
【００３０】また、酸素含有ガス導入管９の外側表面に
形成された発熱体３１が絶縁層３３により被覆されてい
るため、セル７内面の空気極２１に、酸素含有ガス導入
管９の外側表面が接触したとしても、空気極２１と発熱
体３１とが導通することがなく、発熱体３１を流れる電
流がセル７に流れることがなく、このため損失なく昇温
できる。Further, since the heating element 31 formed on the outer surface of the oxygen-containing gas introducing pipe 9 is covered with the insulating layer 33, the air electrode 21 on the inner surface of the cell 7 is attached to the outer surface of the oxygen-containing gas introducing pipe 9. Even if the contact occurs, the air electrode 21 and the heating element 31 do not conduct, and the current flowing through the heating element 31 does not flow through the cell 7, so that the temperature can be increased without loss.
【００３１】さらに、発熱体３１を被覆する絶縁層３３
が、耐熱性を有するＡｌ2 Ｏ3 、ＭｇＯおよびＺｒＯ2
のうち少なくとも１種を主成分とするため、１０００℃
での連続運転に使用できる。Further, an insulating layer 33 covering the heating element 31
Are heat-resistant Al 2 O 3 , MgO and ZrO 2
1000 ° C. because at least one of them is a main component
Can be used for continuous operation at
【００３２】図５は、本発明の他の固体電解質型燃料電
池のセルを示すもので、この固体電解質型燃料電池のセ
ル７の空気極２１内には、Ｐｔ系材料からなる発熱体４
１が内蔵さられている。尚、発熱体４１は、図示しない
が、電極がセル７の開放端に引き出され、燃焼室仕切板
３上に形成された電極を介して外部に引き出され、外部
電源に接続されている。FIG. 5 shows a cell of another solid oxide fuel cell according to the present invention. A heating element 4 made of a Pt-based material is provided in an air electrode 21 of a cell 7 of the solid oxide fuel cell.
1 is built-in. Although not shown, the heating element 41 has an electrode drawn out to the open end of the cell 7, drawn out through an electrode formed on the combustion chamber partition plate 3, and connected to an external power supply.
【００３３】このような固体電解質型燃料電池では、セ
ル７の空気極２１に内蔵された発熱体４１により、セル
７を直接加熱することができ、起動性に優れた固体電解
質型燃料電池を得ることができる。In such a solid oxide fuel cell, the cell 7 can be directly heated by the heating element 41 incorporated in the air electrode 21 of the cell 7, and a solid oxide fuel cell excellent in start-up performance can be obtained. be able to.
【００３４】[0034]
【発明の効果】本発明の固体電解質型燃料電池では、酸
素含有ガス導入管および／または固体電解質型燃料電池
セルに発熱体を設けたので、固体電解質型燃料電池セル
を効率良く急速に昇温できる。これにより動作開始時間
を短縮でき、保温のための無駄なエネルギー消費をなく
すことができる。According to the solid oxide fuel cell of the present invention, since the heating element is provided in the oxygen-containing gas introducing pipe and / or the solid oxide fuel cell, the temperature of the solid oxide fuel cell can be raised quickly and efficiently. it can. As a result, the operation start time can be shortened, and unnecessary energy consumption for heat retention can be eliminated.
【図１】固体電解質型燃料電池の模式図である。FIG. 1 is a schematic view of a solid oxide fuel cell.
【図２】固体電解質型燃料電池セルの断面図である。FIG. 2 is a sectional view of a solid oxide fuel cell.
【図３】スタックを示す平面図である。FIG. 3 is a plan view showing a stack.
【図４】酸素含有ガス導入管の表面に発熱体を形成した
例を示すもので、（ａ）は側面図、（ｂ）は断面図であ
る。FIGS. 4A and 4B show an example in which a heating element is formed on the surface of an oxygen-containing gas introduction pipe, wherein FIG. 4A is a side view and FIG.
【図５】空気極に発熱体を内蔵したセルを示す断面図で
ある。FIG. 5 is a cross-sectional view showing a cell having a heating element built in an air electrode.
１・・・反応容器 ７・・・固体電解質型燃料電池セル ９・・・酸素含有ガス導入管 ２１・・・空気極 ２２・・・固体電解質 ２３・・・燃料極 ３１，４１・・・発熱体 ３３・・・絶縁層 DESCRIPTION OF SYMBOLS 1 ... Reaction container 7 ... Solid oxide fuel cell 9 ... Oxygen-containing gas introduction pipe 21 ... Air electrode 22 ... Solid electrolyte 23 ... Fuel electrode 31, 41 ... Heat generation Body 33 ... insulating layer
Claims (4)
を、外面に燃料極を形成してなる円筒状の固体電解質型
燃料電池セルを複数収容するとともに、前記固体電解質
型燃料電池セル内に酸素含有ガス導入管を挿入してなる
固体電解質型燃料電池において、前記酸素含有ガス導入
管および／または前記固体電解質型燃料電池セルに発熱
体を設けたことを特徴とする固体電解質型燃料電池。A plurality of cylindrical solid electrolyte fuel cells each having an air electrode formed on an inner surface of a solid electrolyte and a fuel electrode formed on an outer surface thereof are accommodated in a reaction vessel. A solid oxide fuel cell comprising an oxygen-containing gas introduction tube inserted therein, wherein a heating element is provided in the oxygen-containing gas introduction tube and / or the solid oxide fuel cell. battery.
池セル内における外側表面に発熱体が形成され、該発熱
体が絶縁層により被覆されていることを特徴とする請求
項１記載の固体電解質型燃料電池。2. The solid according to claim 1, wherein a heating element is formed on an outer surface of the oxygen-containing gas introduction pipe in the solid oxide fuel cell, and the heating element is covered with an insulating layer. Electrolyte fuel cell.
ＭｇＯおよびＺｒＯ2のうち少なくとも１種を主成分と
することを特徴とする請求項２記載の固体電解質型燃料
電池。3. The insulating layer covering the heating element is made of Al 2 O 3 ,
3. The solid oxide fuel cell according to claim 2 , wherein at least one of MgO and ZrO2 is a main component.
体が内蔵されていることを特徴とする請求項１乃至３の
いずれかに記載の固体電解質型燃料電池。4. The solid oxide fuel cell according to claim 1, wherein a heating element is built in the air electrode of the solid oxide fuel cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27686799A JP4817476B2 (en) | 1999-09-29 | 1999-09-29 | Solid oxide fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27686799A JP4817476B2 (en) | 1999-09-29 | 1999-09-29 | Solid oxide fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001102075A true JP2001102075A (en) | 2001-04-13 |
| JP4817476B2 JP4817476B2 (en) | 2011-11-16 |
Family
ID=17575529
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27686799A Expired - Fee Related JP4817476B2 (en) | 1999-09-29 | 1999-09-29 | Solid oxide fuel cell |
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| Country | Link |
|---|---|
| JP (1) | JP4817476B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002319415A (en) * | 2001-04-20 | 2002-10-31 | Kyocera Corp | Solid electrolyte fuel cell and fuel cell |
| JP2003045464A (en) * | 2001-07-26 | 2003-02-14 | Kyocera Corp | Fuel cell and its power generation method |
| JP2004207007A (en) * | 2002-12-25 | 2004-07-22 | Kyocera Corp | Cell for fuel cell, and fuel cell |
| JP2005353487A (en) * | 2004-06-11 | 2005-12-22 | Toyota Motor Corp | Membrane electrode composite for tube type fuel cell |
| JP2008047546A (en) * | 2007-10-25 | 2008-02-28 | Kyocera Corp | Fuel battery |
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| JPH07183043A (en) * | 1993-12-22 | 1995-07-21 | Toshiba Corp | Fuel-cell power generating facility |
| JPH10284108A (en) * | 1997-03-31 | 1998-10-23 | Toyota Motor Corp | Solid electrolyte, and fuel cell, hydrogen pump, oxygen concentration sensor, and steam concentration sensor using the electrolyte |
| JPH11224683A (en) * | 1997-11-25 | 1999-08-17 | Sulzer Hexis Ag | Fuel battery module with built-in auxiliary heater unit and plant provided with the module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS61183878A (en) * | 1985-02-07 | 1986-08-16 | ウエスチングハウス エレクトリック コ−ポレ−ション | Electrochemical dynamotor |
| JPH07183043A (en) * | 1993-12-22 | 1995-07-21 | Toshiba Corp | Fuel-cell power generating facility |
| JPH10284108A (en) * | 1997-03-31 | 1998-10-23 | Toyota Motor Corp | Solid electrolyte, and fuel cell, hydrogen pump, oxygen concentration sensor, and steam concentration sensor using the electrolyte |
| JPH11224683A (en) * | 1997-11-25 | 1999-08-17 | Sulzer Hexis Ag | Fuel battery module with built-in auxiliary heater unit and plant provided with the module |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002319415A (en) * | 2001-04-20 | 2002-10-31 | Kyocera Corp | Solid electrolyte fuel cell and fuel cell |
| JP2003045464A (en) * | 2001-07-26 | 2003-02-14 | Kyocera Corp | Fuel cell and its power generation method |
| JP2004207007A (en) * | 2002-12-25 | 2004-07-22 | Kyocera Corp | Cell for fuel cell, and fuel cell |
| JP2005353487A (en) * | 2004-06-11 | 2005-12-22 | Toyota Motor Corp | Membrane electrode composite for tube type fuel cell |
| JP2008047546A (en) * | 2007-10-25 | 2008-02-28 | Kyocera Corp | Fuel battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4817476B2 (en) | 2011-11-16 |
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