Abstract:
PROBLEM TO BE SOLVED: To provide a solid oxide fuel cell device comprising: an elongated tube (29) having a reaction zone (31) along a portion in a first longitudinal direction constituted to be heated to an operation reaction temperature, and at least one low-temperature zone (30) along a portion in a second longitudinal direction constituted to be kept at a temperature lower than the operation reaction temperature when the reaction zone is heated; and annular channels (14, 20) for delivering fuel and an oxidant.SOLUTION: Plural fuel cell devices can be incorporated in a fuel cell system, and each of the devices is arranged together with a reaction zone in a high-temperature zone chamber, and has first and second low-temperature end regions extending outside the high-temperature zone chamber. In various embodiments, the solid oxide fuel cell device can comprise an elongated substrate (29) having a maximum dimensional length, so that the elongated substrate has a thermal expansion coefficient to have only one main axis with the same width as the length.
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a solid oxide type fuel cell in which cracking during temperature elevation is prevented and reliability in reaction gas supply connection or electrical connection is improved.SOLUTION: A manufacturing method of a solid oxide type fuel cell includes the steps of: attaching an anode layer 24 to a first side part of a first elongated green ceramic layer; attaching a cathode layer 26 to an opposing second side part of the first elongated green ceramic layer; positioning the anode layer 24 and the cathode layer 26 to be an active fuel cell portion; attaching a sacrifice organic layer and a removable structure to each of the anode layer 24 and the cathode layer 26; attaching a second elongated green ceramic layer to the removable structure; laminating all the layers and the removable structure together in order to form a layered structure; and heating the layered structure to a temperature sufficient for burning down the sacrifice organic layer in order to form a fuel passage 14 and an air passage 20 in the active fuel cell portion along the anode layer 24 and the cathode layer 26.
Abstract:
PROBLEM TO BE SOLVED: To provide fuel cell devices (10, 100, 200, 300, 400, and 500), a fuel cell system, method of using the fuel cell device and the system, and a method of manufacturing fuel cell devices (10, 100, 200, 300, 400, and 500).SOLUTION: Fuel cell devices (10, 100, 200, 300, 400, and 500) have elongated substrates such as rectangular or tubular substrates, and a thermal expansion coefficient is a maximum dimension of a length of the elongated substrate so as to have an only primary axis which is coextensive with the length. According to other specific embodiment, reaction areas (32 and 32b) are located along a first portion of the length to be heated to an operation reaction temperature, and at least one low temperature area is located along a second portion of the length to be operated at the operation reaction temperature or lower.
Abstract:
PROBLEM TO BE SOLVED: To provide a stick-like solid oxide fuel cell (SOFC) device comprising a low temperature end part and a high temperature central part that eliminate mismatch such as sinter time shrinkage between different materials of an anode/electrolyte/cathode laminate and a crack due to coefficients of expansion.SOLUTION: In a fuel cell device (10), one or both of an anode (24) and a cathode are divided electrodes (24S), the divided electrodes are separated by a gap (1022) which extends to at least part of the thickness of the divided electrodes. The fuel cell device (10) includes a laminate structure which comprises an electricity collector (122) continuously extending on the divided electrodes.
Abstract:
PROBLEM TO BE SOLVED: To provide fuel cell device (10, and the like) and system.SOLUTION: A device (10, and the like) includes a ceramic support structure (29). Its length direction is the main direction of thermal expansion. A reaction zone (32) having at least one active layer includes first and second counter electrodes (24, 26) spaced apart from a first end (11a), first and second active gas passages (815, 821), and an electrolyte (28). The first active gas passage (815) includes a plurality of sub-passages extending in the y direction while being spaced apart in the z direction. A main flow passage (814) extends, in the length direction, from the first end (11a) into the reaction zone (32) and is coupled, in fluid, with the first active gas passage (815). The main flow passage (814) is thicker than the sub-passage.
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel cell device (10, 100, 200, 300, 400, 500), a fuel cell system, a using method for a fuel cell device and system, and a manufacturing method for a fuel cell device (10, 100, 200, 300, 400, 500).SOLUTION: Each of fuel cell devices (10, 100, 200, 300, 400, 500) has a narrow substrate such as a rectangular or tubular substrate. Its thermal expansion coefficient is equal to the maximum length of the narrow substrate so as to have a unique principal axis which has the same extension as its length. Additionally, according to another specific embodiment, reaction areas (32, 32b) are located along a first portion of a length required for the reaction areas to be heated up to an operation reaction temperature. At least one low temperature area is located along a second portion of a length required for the low temperature area to operate at a temperature equal to or lower than the operation reaction temperature.
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel cell device (10, 100, 200, 300, 400, 500), a fuel cell system, a using method for a fuel cell device and system, and a manufacturing method for a fuel cell device (10, 100, 200, 300, 400, 500).SOLUTION: Each of fuel cell devices (10, 100, 200, 300, 400, 500) has a narrow substrate such as a rectangular or tubular substrate. Its thermal expansion coefficient is equal to the maximum length of the narrow substrate so as to have a unique principal axis which has the same extension as its length. Additionally, according to another specific embodiment, reaction areas (32, 32b) are located along a first portion of a length required for the reaction areas to be heated up to an operation reaction temperature. At least one low temperature area is located along a second portion of a length required for the low temperature area to operate at a temperature equal to or lower than the operation reaction temperature.
Abstract:
PROBLEM TO BE SOLVED: To provide solid-oxide fuel cell devices and a system, and a manufacturing method for the devices, and in more detail, to provide the solid-oxide fuel cell device in a form of a multi-layer monolithic SOFC Stick (R). SOLUTION: The fuel cell system into which a plurality of solid fuel oxide fuel cell devices and a plurality of fuel devices are integrated is constituted. Each device has a reaction zone for heating it up to an operational reaction temperature, in a first portion of its length. Also, an elongated substrate, which has at least one cold zone for maintaining it at a low temperature lower than the operational reaction temperature when the reaction zone is heated, is provided in a second portion of its length. In an embodiment, an electrolyte is interposed between an anode and cathode present in the reaction zone. Each of the anode and cathode has an electric passage which extends up to the outer surface of at least one cold zone for the electric connection at a low temperature. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a ceramic tube type fuel cell device and system, in relating to a solid oxide fuel cell (SOFC).SOLUTION: In a specific embodiment, devices (10 or the like) include a ceramic support structure (29). The longitudinal direction thereof is the principal direction of thermal expansion. A reaction zone (32) having at least one active layer is spaced apart from a first end part (11a), and includes first and second counter electrode (24, 26), first and second gas passages (14, 20), and an electrolyte (28). A first fuel passage (14) includes a plurality of sub passages extending in the longitudinal direction and spaced apart each other in the vertical direction. A mainline flow passage extends from the first end part (11a) into the reaction zone (32) along the longitudinal direction, and is fluidically connected to the sub passages of the first fuel passage (14). The thickness of the mainline flow passage is greater than that of the sub passages.
Abstract:
PROBLEM TO BE SOLVED: To provide fuel cell device and system including a thermal cut-off part for preventing a ceramic element from cracking, when heating a tubular solid oxide fuel cell (SOFC).SOLUTION: A fuel cell device 800 includes a ceramic support structure, and the length direction of which is the main direction of thermal expansion. A reaction zone having at least one active layer is spaced apart from a first end (11a), and includes first and second counter electrodes, first and second active gas passages (815, 821), and an electrolyte. The first active gas passage (815) includes a plurality of sub-passages extending in the length direction and spaced apart in the thickness direction. A trunk flow passage (814) extends from the first end (11a) into the reaction zone in the length direction, and is coupled fluidly to a sub-passage of the first active gas passage (815). The trunk flow passage (814) has a thickness larger than that of the sub-passage.