摘要:
A temperature measuring method accurately measures a sheet-like object even when the sheet-like object has an uneven temperature distribution throughout. In this method, temperature measurement is conducted in a measuring area where the sheet-like object is to be measured for its physical quantity or in the vicinity of the measuring area during determination of the physical quantity by a physical quantity measuring device. One or more temperature sensors are located at a position proximal to each sheet-like object that streams in a predetermined direction relative to the temperature sensors, and air is jetted out toward the sheet-like object for creating an air curtain that surrounds each temperature sensor so that a gauge workspace substantially confining the atmosphere therein is defined over one or both of the opposite surfaces of the sheet-like object. The temperature sensors detect the temperature in the measuring area or its vicinity within the gauge workspace.
摘要:
A polyarylene copolymer having a sulfonic acid group which has high proton conductivity and reduced swelling in hot water and reduced shrinkage in drying; a solid polymer electrolyte and a proton conductive membrane comprising the copolymer; and a membrane-electrode assembly using these.The polyarylene block copolymer comprises a polymer segment (A) having a sulfonic acid group, and a polymer segment (B) having substantially no sulfonic acid group, the polymer segment (B) having substantially no sulfonic acid group comprising a structural unit represented by the following formula (1).
摘要:
Disclosed are a polymer electrolyte having improved hot water resistance and radical resistance, a proton conductive membrane comprising the polymer electrolyte, and a membrane-electrode assembly including the proton conductive membrane.The polymer electrolyte comprises at least one polymer selected from polyether, polyketone, polyetherketone, polysulfone, polyethersulfone, polyimide, polyetherimide, polybenzimidazole, polybenzothiazole, polybenzoxazole and the like. The polymer comprises a repeating structural unit with either or both of an aromatic ring and a heterocyclic ring, and a repeating structural unit represented by the formula (1): wherein X is a single bond, an electron-withdrawing group or an electron-donating group; R is a single bond, —(CH2)q— or —(CF2)q— where q ranges from 1 to 10; m is from 0 to 10; k is from 0 to 5; l is from 0 to 4; and k+1≧1.
摘要:
A membrane-electrode assembly having superior hot water resistance has a membrane containing an aromatic polymer having a repeating unit expressed by general formula (1): in which A represents independently either —CO— or —SO2—; B represents independently an oxygen atom or sulfur atom; R1 to R8, which may be identical or different from each other, represent a hydrogen atom, fluorine atom, alkyl group, phenyl group or nitrile group; R9 to R24, which may be identical or different from each other, represent a hydrogen atom, alkyl group or phenyl group; and ‘a’ represents an integer of 0 to 4.
摘要翻译:具有优异的耐热水性的膜 - 电极组件具有含有具有由通式(1)表示的重复单元的芳族聚合物的膜:其中A独立地表示-CO-或-SO 2 - ; B独立地表示氧原子或硫原子; R 1至R 8可以相同或不同,表示氢原子,氟原子,烷基,苯基或腈基; R 9〜R 24可以相同或不同,表示氢原子,烷基或苯基; 'a'表示0〜4的整数。
摘要:
Before a phosphoric acid fuel cell generates electric energy, a cathode is supplied with a hydrogen gas (fuel gas) and air (oxygen-containing gas) to cause a reaction between hydrogen and oxygen. At this time, the hydrogen and the oxygen are caused to react with each other under a condition in which the concentration of phosphoric acid at the time the amount of water produced by the reaction (liquid water) for reducing the concentration of phosphoric acid and the amount of water evaporated from phosphoric acid are in equilibrium is equal to or greater than a reference phosphoric acid concentration which is capable of keeping the fuel cell at a desired performance level. The temperature of an electrolyte electrode assembly of the fuel cell is increased by the heat which is generated by the reaction.
摘要:
To provide a sulfonic acid group-containing polymer having improved hot water resistance and radical resistance (durability), a solid polymer electrolyte including the polymer, and a proton-conducting membrane including the electrolyte, the polymer electrolyte includes a sulfonated product of a polymer shown by the following general formula (I): wherein X, Y, and Z are bonded randomly, alternately, or in blocks, y represents an integer of two or more, and each of x and z represents an integer of zero or more, where x+z>2.
摘要翻译:为了提供具有改善的耐热水性和耐自由基性(耐久性)的含磺酸基聚合物,包含该聚合物的固体聚合物电解质和包含电解质的质子传导膜,聚合物电解质包括所示聚合物的磺化产物 通过以下通式(I)表示:其中X,Y和Z随机,交替或以块形式键合,y表示2以上的整数,x和z分别表示0以上的整数, x + z> 2。
摘要:
The invention provides a proton conductive membrane excellent in heat resistance, which has sulfonic acid as ion exchange groups. The proton conductive membrane comprises a nitrogen-containing compound that can be mixed with water in arbitrary proportions and has a boiling point of not lower than 100. degree. C. and a proton conductive resin which has sulfonic acid ion-exchange groups, wherein the nitrogen-containing compound is contained in an amount of 0.5 to 10 parts by weight based on 100 parts by weight of the proton conductive resin.
摘要:
A solid polymer electrolyte includes a polymer having a sulfonic group and shows high proton conductivity in a wide range of temperatures and humidities and is excellent in hot water resistance and chemical stability. A proton conductive membrane is composed of the electrolyte. The polymer electrolyte includes a polymer having a structural unit represented by the following formula (1a) or (1b): wherein A is a divalent electron-withdrawing group, B is a divalent electron-donating group or a direct bond, Ar is an aromatic group, Z is an oxygen or a sulfur atom, X is a hydrogen or a fluorine atom, j is an integer of 1 or greater, k is an integer of from 1 to 4, l is an integer of from 0 to 10, m is an integer of from 1 to 10, and n is an integer of from 1 to 8.
摘要:
A proton conducting polymer obtained by blending an organic phosphoric acid compound solution with a meta type polyaniline solution; a solid polymer electrolyte for a fuel cell comprising the proton conducting polymer, which is excellent in proton conductivity, methanol barrier property and dopant stability in an aqueous solution of methanol; and an electrode comprising the proton conducting and fine catalyst particles carried on porous particles.
摘要:
The operating condition is set so that a phosphoric acid concentration, at which an amount of reaction product water to lower a concentration of phosphoric acid and an amount of water evaporated from phosphoric acid are equilibrated, can be not less than a reference phosphoric acid concentration to maintain desired performance, when a phosphoric acid fuel cell is operated under a condition where the reaction product water exists as liquid water. Specifically, an equilibrium phosphoric acid concentration-setting system is used to control, if necessary, gas flow rate control systems, gas temperature control systems, and pressure control systems so as to effectively prevent the performance of the phosphoric acid fuel cell and its power generation from being worsened. Accordingly, it is possible to suitably operate the phosphoric acid fuel cell at a low temperature without additional equipments.