公开(公告)号：US07781123B2

公开(公告)日：2010-08-24

申请号：US11145647

申请日：2005-06-06

申请人： Joseph M. Keller ,  Karl J. Haltiner, Jr. ,  Subhasish Mukerjee ,  Diane M. England ,  Gary F. Reisdorf ,  Steven L. Cooper ,  Willem Vilders, III

发明人： Joseph M. Keller ,  Karl J. Haltiner, Jr. ,  Subhasish Mukerjee ,  Diane M. England ,  Gary F. Reisdorf ,  Steven L. Cooper ,  Willem Vilders, III

IPC分类号： H01M8/12 ,  H01M8/02 ,  H01M4/86 ,  C04B35/64

CPC分类号： H01M8/0245 ,  H01M4/8621 ,  H01M4/8885 ,  H01M8/0232 ,  H01M8/0236 ,  H01M8/0297 ,  H01M8/1213 ,  H01M8/1246 ,  H01M8/2425 ,  H01M8/2457 ,  Y02E60/525 ,  Y02P70/56

摘要： An electrical interconnect for a solid-oxide fuel cell stack assembly, including a novel sintering paste and an improved manufacturing process for an anode and cathode electrical contacts is disclosed. On the anode side, the paste contains a metallic oxide such as NiO, and an amount of sacrificial pore-forming particles, such as carbon particles or polymer spheres, which are vaporized during sintering of the paste, resulting in a very porous connection having good electrical conductivity and good adhesion. A preferred level of pore-former in the paste is about 40 volume percent. On the cathode side, the paste contains a noble metal such as for example, gold, platinum, palladium or rhodium, and an amount of the sacrificial pore-forming particles. The paste may be applied to the surfaces in a grid pattern or, because the resulting contact is porous after sintering, it may be applied as a continuous layer.

摘要翻译： 公开了一种用于固体氧化物燃料电池堆组件的电互连，其包括新颖的烧结膏和用于阳极和阴极电触点的改进的制造工艺。 在阳极侧，糊状物含有NiO等金属氧化物，以及在糊料烧结过程中蒸发的诸如碳颗粒或聚合物球的牺牲性成孔颗粒的量，导致非常多孔的连接具有良好的 导电性好，附着力好。 浆料中成孔剂的优选含量为约40体积％。 在阴极侧，糊状物含有贵金属，例如金，铂，钯或铑，以及一定量的牺牲性成孔颗粒。 糊状物可以以网格图案施加到表面，或者由于所得接触在烧结之后是多孔的，所以可以作为连续层施加。

公开(公告)号：US07422819B2

公开(公告)日：2008-09-09

申请号：US11158369

申请日：2005-06-22

申请人： Gary F. Reisdorf ,  Joseph M. Keller ,  Karl J. Haltiner, Jr. ,  Subhasish Mukerjee ,  Kenneth Scott Weil ,  John S. Hardy

发明人： Gary F. Reisdorf ,  Joseph M. Keller ,  Karl J. Haltiner, Jr. ,  Subhasish Mukerjee ,  Kenneth Scott Weil ,  John S. Hardy

IPC分类号： H01M2/08

CPC分类号： H01M8/0282 ,  H01M8/0286 ,  H01M2008/1293

摘要： In assembling an SOFC fuel cell stack from a plurality of cassettes, the mounting plate of one cassette is attached to, and insulated from, the separator plate of the next-adjacent cassette by a peripheral dielectric seal consisting of a ceramic coating and a metal braze. Materials suitable for the ceramic coating include yttrium stabilized zirconia (YSZ), zirconia toughened alumina, magnesium silicates such as the mineral forsterite, magnesium aluminates, magnesium aluminosilicates and lanthanum zirconate. The ceramic coating may be applied to the cassette's outer surface in known fashion as by physical vapor deposition, chemical vapor deposition, sputtering, and various methods of plasma spray. An underlayer of alumina may also be used to provide a redundant layer of electrical insulation.

摘要翻译： 在从多个盒组装SOFC燃料电池堆时，一个盒的安装板通过由陶瓷涂层和金属钎焊组成的外围电介质密封件附接到下一相邻盒的隔板并与之隔绝 。 适用于陶瓷涂层的材料包括钇稳定氧化锆（YSZ），氧化锆增韧氧化铝，硅酸镁如矿物镁橄榄石，铝酸镁，硅铝酸镁和锆酸镧。 陶瓷涂层可以通过物理气相沉积，化学气相沉积，溅射和各种等离子体喷涂方法以已知的方式施加到盒的外表面。 也可以使用氧化铝的底层来提供冗余的电绝缘层。

公开(公告)号：US09276267B2

公开(公告)日：2016-03-01

申请号：US12284499

申请日：2008-09-23

申请人： Kailash C. Jain ,  Rick D. Kerr ,  Bryan Gillispie ,  Mohammad Parsian ,  Joseph M. Keller ,  David A. Thompson

发明人： Kailash C. Jain ,  Rick D. Kerr ,  Bryan Gillispie ,  Mohammad Parsian ,  Joseph M. Keller ,  David A. Thompson

IPC分类号： H01M4/80 ,  H01M4/86 ,  H01M4/88 ,  H01M4/90 ,  H01M8/12

CPC分类号： H01M4/8657 ,  H01M4/8889 ,  H01M4/9016 ,  H01M4/9033 ,  H01M8/1253 ,  H01M2004/8689 ,  H01M2008/1293 ,  Y02E60/521 ,  Y02E60/525 ,  Y02P70/56

摘要： A cathode of a solid-oxide fuel cell includes a first ionic conducting layer, a second layer deposited over the first layer and formed from a mixed ionic and electronic conductor layer including an oxygen ion conducting phase, and a third layer deposited over the second layer and formed from a mixed ionic and electronic conductor layer. A sintering aid and pore formers are added to the second layer and the third layer to establish ionic, electronic, and gas diffusion paths that are contiguous. By adjusting the microstructure of the second and the third layer, a high performance low resistance cathode is formed that bonds well to the electrolyte, is highly electro-catalytic, and has a relatively low overall resistance. By using inexpensive and readily available substances as sintering aid and as pore formers, a low-cost cathode is provided.

摘要翻译： 固体氧化物燃料电池的阴极包括第一离子导电层，沉积在第一层上并由包括氧离子传导相的混合离子和电子导体层形成的第二层，以及沉积在第二层上的第三层 并由混合的离子和电子导体层形成。 向第二层和第三层加入烧结助剂和成孔剂以建立邻接的离子，电子和气体扩散路径。 通过调整第二层和第三层的微结构，形成了与电解质结合良好的高性能低电阻阴极，高电催化，总体电阻较低。 通过使用便宜且容易获得的物质作为烧结助剂和成孔剂，提供了低成本的阴极。

公开(公告)号：US08124037B2

公开(公告)日：2012-02-28

申请号：US12635756

申请日：2009-12-11

申请人： Kailash C. Jain ,  Joseph M. Keller ,  Rick D. Kerr

发明人： Kailash C. Jain ,  Joseph M. Keller ,  Rick D. Kerr

IPC分类号： C04B35/00

CPC分类号： C04B35/2641 ,  C01G49/009 ,  C01G51/006 ,  C01G51/68 ,  C01P2002/34 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12 ,  C01P2006/40 ,  C04B35/2633 ,  C04B35/6261 ,  C04B35/6262 ,  C04B35/6264 ,  C04B35/62655 ,  C04B35/62675 ,  C04B2235/3213 ,  C04B2235/3227 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/5409 ,  C04B2235/5445 ,  C04B2235/79 ,  H01M4/8621 ,  H01M4/9033

摘要： An improved LSCF 6428 perovskite material of the type La12zSrx+zCo0.2+aFe0.8+bO3−δ wherein x=0.4, z=(0-0.1), a=(0.01-0.04), and b=(0.05-0.15) for use as an SOFC cathode having increased electronic and ionic conductivity. The general formula is similar to the prior art formulae (La0.6Sr0.4)1−zCo0.2Fe0.8O3−δ and La0.6Sr0.4Co0.2Fe0.8O3−δ but applies the z term to La and Sr independently as well as reducing the overall content of La. Further, by adding a small amount (a) of extra Co ions, catalytic activity, conductivity, and sinterability are further enhanced. Adding small amounts (b) of Fe and/or Fe and Co moderates the thermal expansion coefficient with no adverse effect on crystal structure or fuel cell performance. Improved sinterability, microstructure, and reduced film cracking result in high power density of fuel cells. An inherently low-cost solid state reaction method is described.

摘要翻译： La12zSrx + zCo0.2 + aFe0.8 + bO3-δ类型的改进的LSCF 6428钙钛矿材料，其中x = 0.4，z =（0-0.1），a =（0.01-0.04）和b =（0.05-0.15 ）用作具有增加的电子和离子电导率的SOFC阴极。 通式与现有技术公式（La0.6Sr0.4）1-zCo0.2Fe0.8O3-δ和La0.6Sr0.4Co0.2Fe0.8O3-δ类似，但也可以独立地将z项应用于La和Sr 作为降低La的总体含量，另外，通过添加少量（a）的额外的Co离子，催化活性，导电性和烧结性进一步提高。 加入少量（b）的Fe和/或Fe和Co会缓和热膨胀系数，对晶体结构或燃料电池性能没有不利影响。 改善的烧结性，微观结构和降低的膜裂纹导致燃料电池的高功率密度。 描述了固有的低成本固态反应方法。

公开(公告)号：US07785725B2

公开(公告)日：2010-08-31

申请号：US11003897

申请日：2004-12-03

申请人： Joseph M. Keller ,  Walter Symons ,  William J. LaBarge

发明人： Joseph M. Keller ,  Walter Symons ,  William J. LaBarge

IPC分类号： H01M2/08 ,  H01M8/10

CPC分类号： H01M8/0282 ,  H01M2008/1293

摘要： In a solid-oxide fuel cell assembly comprising a plurality of components having electrically-conductive mating surfaces therebetween, the surfaces are sealed by an electrically insulating gasket that include a mineral composition comprising about 66 mol % MgO and about 33 mol % SiO2, the mineral composition being known mineralogically as forsterite. A brazing alloy may be applied to enhance bonding of the gasket into place. The gasket composition may include additions of Al2O3 to enhance electrical resistivity while having little to no impact of matching expansion coefficients of the gasket and metal mating surfaces. Also, additions such as titania or zirconia to inhibit glassy phase grain boundaries and the formation of impurities and pores in the ceramic grain boundaries may be used. A recommended particle size distribution of precursor powders is disclosed that leads to an optimum microstructure of the sintered gasket.

摘要翻译： 在包括多个在其间具有导电配合表面的部件的固体氧化物燃料电池组件中，表面由电绝缘垫片密封，该电绝缘衬垫包括含有约66mol％MgO和约33mol％SiO 2的矿物组合物， 组合物在矿物学上被称为镁橄榄石。 可以施加钎焊合金以增强垫圈的粘合到位。 衬垫组合物可以包括添加Al 2 O 3以增强电阻率，同时几乎不影响垫片和金属配合表面的膨胀系数的匹配。 此外，可以使用诸如二氧化钛或氧化锆的添加物来抑制玻璃相晶界和陶瓷晶界中杂质和孔的形成。 公开了推荐的前体粉末的粒度分布，其导致烧结垫片的最佳微观结构。

公开(公告)号：US20100075194A1

公开(公告)日：2010-03-25

申请号：US12284499

申请日：2008-09-23

申请人： Kailash C. Jain ,  Rick D. Kerr ,  Bryan Gillispie ,  Mohammad Parsian ,  Joseph M. Keller ,  David A. Thompson

发明人： Kailash C. Jain ,  Rick D. Kerr ,  Bryan Gillispie ,  Mohammad Parsian ,  Joseph M. Keller ,  David A. Thompson

IPC分类号： H01M8/10 ,  B32B38/00

CPC分类号： H01M4/8657 ,  H01M4/8889 ,  H01M4/9016 ,  H01M4/9033 ,  H01M8/1253 ,  H01M2004/8689 ,  H01M2008/1293 ,  Y02E60/521 ,  Y02E60/525 ,  Y02P70/56

摘要： A cathode of a solid-oxide fuel cell includes a first ionic conducting layer, a second layer deposited over the first layer and formed from a mixed ionic and electronic conductor layer including an oxygen ion conducting phase, and a third layer deposited over the second layer and formed from a mixed ionic and electronic conductor layer. A sintering aid and pore formers are added to the second layer and the third layer to establish ionic, electronic, and gas diffusion paths that are contiguous. By adjusting the microstructure of the second and the third layer, a high performance low resistance cathode is formed that bonds well to the electrolyte, is highly electro-catalytic, and has a relatively low overall resistance. By using inexpensive and readily available substances as sintering aid and as pore formers, a low-cost cathode is provided.

摘要翻译： 固体氧化物燃料电池的阴极包括第一离子导电层，沉积在第一层上并由包括氧离子传导相的混合离子和电子导体层形成的第二层，以及沉积在第二层上的第三层 并由混合的离子和电子导体层形成。 向第二层和第三层加入烧结助剂和成孔剂以建立邻接的离子，电子和气体扩散路径。 通过调整第二层和第三层的微结构，形成了与电解质结合良好的高性能低电阻阴极，高电催化，总体电阻较低。 通过使用便宜且容易获得的物质作为烧结助剂和成孔剂，提供了低成本的阴极。

公开(公告)号：US07964324B2

公开(公告)日：2011-06-21

申请号：US12475626

申请日：2009-06-01

申请人： Su-Chee Simon Wang ,  Kailash Chandra Jain ,  Joseph M. Keller ,  Rick D. Kerr

发明人： Su-Chee Simon Wang ,  Kailash Chandra Jain ,  Joseph M. Keller ,  Rick D. Kerr

IPC分类号： H01M8/00 ,  H01M4/02 ,  H01M4/36 ,  H01M4/34

CPC分类号： H01M4/9033 ,  H01M4/885 ,  H01M4/8885 ,  H01M4/8889 ,  H01M4/90 ,  H01M2004/8689 ,  H01M2008/1293 ,  Y10T29/49115

摘要： A method for improving performance of an SOFC by impregnation of the cathode with metallic silver. A solution of AgNO3 in acetonitrile is imbibed into a perovskite cathode fabricated on a electrolyte layer supported by an anode, defining an SOFC cell. The cathode imbibition may be repeated a plurality of times as may be needed depending upon the thickness of the cathode. The amount of solution soaked into the cathode results a total final weight percent of Ag in the cathode between about 0.5% and about 10%. The cathode is then fired in air at high temperature to drive off the acetonitrile and to reduce the silver ions to metallic silver. In this way, cathode electrical resistance may be reduced by as much as 52%.

摘要翻译： 一种用金属银浸渍阴极来提高SOFC性能的方法。 将AgNO 3在乙腈中的溶液吸收到由阳极支撑的电解质层上制造的钙钛矿阴极，限定了SOFC电池。 取决于阴极的厚度，可能需要重复多次阴极吸收。 浸入阴极中的溶液的量导致阴极中Ag的总最终重量百分比为约0.5％至约10％。 然后将阴极在空气中在高温下烧制以驱除乙腈并将银离子还原成金属银。 以这种方式，阴极电阻可以降低多达52％。

公开(公告)号：US20110143255A1

公开(公告)日：2011-06-16

申请号：US12635756

申请日：2009-12-11

申请人： Kailash C. Jain ,  Joseph M. Keller ,  Rick D. Kerr

发明人： Kailash C. Jain ,  Joseph M. Keller ,  Rick D. Kerr

IPC分类号： H01M8/10 ,  H01M4/48

CPC分类号： C04B35/2641 ,  C01G49/009 ,  C01G51/006 ,  C01G51/68 ,  C01P2002/34 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12 ,  C01P2006/40 ,  C04B35/2633 ,  C04B35/6261 ,  C04B35/6262 ,  C04B35/6264 ,  C04B35/62655 ,  C04B35/62675 ,  C04B2235/3213 ,  C04B2235/3227 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/5409 ,  C04B2235/5445 ,  C04B2235/79 ,  H01M4/8621 ,  H01M4/9033

摘要： An improved LSCF 6428 perovskite material of the type La12zSrx+zCo0.2+aFe0.8+bO3−δ wherein x=0.4, z=(0.01−0.1), a=(0.01−0.04), and b=(0.05−0.15) for use as an SOFC cathode having increased electronic and ionic conductivity. The general formula is similar to the prior art formulae (La0.6Sr0.4)1−z Co0.2 Fe0.8O3−δ and La0.6Sr0.4 Co0.2 Fe0.8O3−δ but applies the z term to La and Sr independently as well as reducing the overall content of La. Further, by adding a small amount (a) of extra Co ions, catalytic activity, conductivity, and sinterability are further enhanced. Adding small amounts (b) of Fe and/or Fe and Co moderates the thermal expansion coefficient with no adverse effect on crystal structure or fuel cell performance. Improved sinterability, microstructure, and reduced film cracking result in high power density of fuel cells. An inherently low-cost solid state reaction method is described.

摘要翻译： La12zSrx + zCo0.2 + aFe0.8 + bO3-δ类型的改进的LSCF 6428钙钛矿材料，其中x = 0.4，z =（0.01-0.1），a =（0.01-0.04）和b =（0.05-0.15 ）用作具有增加的电子和离子电导率的SOFC阴极。 通式与现有技术公式（La0.6Sr0.4）1-z Co0.2Fe0.8O3-δ和La0.6Sr0.4Co0.2Fe0.8O3-δ相似，但将z项应用于La和 Sr以及La的总含量降低，另外，通过添加少量（a）的Co离子，能够进一步提高催化活性，导电性和烧结性。 加入少量（b）的Fe和/或Fe和Co会缓和热膨胀系数，对晶体结构或燃料电池性能没有不利影响。 改善的烧结性，微观结构和降低的膜裂纹导致燃料电池的高功率密度。 描述了固有的低成本固态反应方法。

公开(公告)号：US20100143761A1

公开(公告)日：2010-06-10

申请号：US12475626

申请日：2009-06-01

申请人： Su-Chee Simon Wang ,  Kailash Chandra Jain ,  Joseph M. Keller ,  Rick D. Kerr

发明人： Su-Chee Simon Wang ,  Kailash Chandra Jain ,  Joseph M. Keller ,  Rick D. Kerr

IPC分类号： H01M8/10 ,  H01M4/82

CPC分类号： H01M4/9033 ,  H01M4/885 ,  H01M4/8885 ,  H01M4/8889 ,  H01M4/90 ,  H01M2004/8689 ,  H01M2008/1293 ,  Y10T29/49115

摘要： A method for improving performance of an SOFC by impregnation of the cathode with metallic silver. A solution of AgNO3 in acetonitrile is imbibed into a perovskite cathode fabricated on a electrolyte layer supported by an anode, defining an SOFC cell. The cathode imbibition may be repeated a plurality of times as may be needed depending upon the thickness of the cathode. The amount of solution soaked into the cathode results a total final weight percent of Ag in the cathode between about 0.5% and about 10%. The cathode is then fired in air at high temperature to drive off the acetonitrile and to reduce the silver ions to metallic silver. In this way, cathode electrical resistance may be reduced by as much as 52%.

摘要翻译： 一种用金属银浸渍阴极来提高SOFC性能的方法。 将AgNO 3在乙腈中的溶液吸收到由阳极支撑的电解质层上制造的钙钛矿阴极，限定了SOFC电池。 取决于阴极的厚度，可能需要重复多次阴极吸收。 浸入阴极中的溶液的量导致阴极中Ag的总最终重量百分比为约0.5％至约10％。 然后将阴极在空气中在高温下烧制以驱除乙腈并将银离子还原成金属银。 以这种方式，阴极电阻可以降低多达52％。

公开(公告)号：US07595085B2

公开(公告)日：2009-09-29

申请号：US10797301

申请日：2004-03-09

申请人： Robert J. Svoboda ,  Haskell Simpkins ,  Joseph M. Keller ,  Vincent L. Sprenkle ,  Kerry D. Meinhardt ,  Nathan L. Canfield

发明人： Robert J. Svoboda ,  Haskell Simpkins ,  Joseph M. Keller ,  Vincent L. Sprenkle ,  Kerry D. Meinhardt ,  Nathan L. Canfield

IPC分类号： B05D5/12

CPC分类号： H01M4/8875 ,  H01M4/8621 ,  H01M4/8885 ,  H01M2008/147 ,  Y02E60/526

摘要： In one embodiment, the method of producing a ceramic assembly includes: disposing an electrode precursor on an electrolyte precursor having an electrolyte sintering shrinkage, disposing a stabilizer precursor having a stabilizer sintering shrinkage on the electrode precursor on a side opposite the electrolyte precursor to form a precursor assembly, and sintering the precursor assembly to form the ceramic assembly comprising a stabilizer layer, electrode, and electrolyte. The difference between the electrolyte sintering shrinkage and the stabilizer sintering shrinkage is less than or equal to ±1% and a surface of the ceramic assembly has less than or equal to about 5.0 degrees camber, as measured from the horizontal plane.

摘要翻译： 在一个实施方案中，制造陶瓷组件的方法包括：将电极前体设置在具有电解质烧结收缩率的电解质前体上，在与电解质前体相反的一侧在电极前体上设置稳定剂烧结收缩率的稳定剂前体，形成 前体组件，并烧结前体组件以形成包含稳定剂层，电极和电解质的陶瓷组件。 电解质烧结收缩率和稳定剂烧结收缩率之间的差异小于或等于±1％，陶瓷组件的表面从水平面测得的角度小于或等于约5.0度。