Stacks integrity

Table 6. Structural data for segregated stack, integral oxidation state crystals with the metal complex not stacked ...

Fig. 4.24 System modules and stack integrated in to the Mercedes-Benz B-Class. Source Daimler AG...

Fundamental properties of the materials such as polymer electrolyte membranes, catalysts and gas diffusion layers making up the so called Membrane Electrode Assembly (MEA) as well as requirements to bipolar plates and sealing concepts necessary for stack integration are discussed. 

Bipolar plates connecting adjacent cells can be considered as combination the functions, current collector, gas distribution (flow field), gas separation and coolant layer into one subunit. Integration of electrolyte membrane, catalytic layers and gas diffusion layers into a Membrane Electrode Assembly (MEA) results into a second major subunit for fuel cell stack integration. Combination of a catalytic layer and a gas diffusion layer to a gas diffusion electrode is yet another possibility of integrating functional layers to subunits. 

For media tight stack integration, the active area of the MEA must separate the anode and the cathode compartment electrically and as part of the sealing concept prevent leakage of the media to the outside. To achieve this, the membrane frequently is framed by an inert polymer film protecting the membrane from contaminant intrusion and damage caused by compression from the seal. 

Buchkremer, H.P., Dieckmann, U., and Stover, D. (1996) Component manufacturing and stack integration of anode-supported planar SOFC system. In Proceedings of the Second European Solid Oxide fuel Cell Forum, Oslo, Nonmy, 6-10 May 1996 (ed. B. Thorstensen), European SOFC Fomm, Oberrohrdorf pp. 221—228. 

In Ataka et al. (2010), a platform of stack-integrated arrays of microactuators and sensors that provide planar micropart motion has been proposed. In this system, there are four orthogonal actuators in each cell, as shown in... 

Ataka, M., Fujita, H. and Mita, M. (2010) 2D Planar Micro Manipulator by Stack-Integrated Micro Actuator/Sensor Array , First Workshop on Hardware and Software Implementation and Control of Distributed MEMS (DMEMS), Besan, TBD, France. 

Verda and Nicolin (2010) consider a biogas-fueled power generation. The system is based on a molten cmbonate fuel cell (MCFC) stack integrated with a micro-gas torbine for electricity generation, coupled with a pressure sawing... 

If a stack is to be tested as a commercial product, the test is usually performed in a complete system with balance-of-the-plant components added and the stack integrated into the system to the maximum possible extent. Such tests of complete SOFC systems are both expensive and complex, and it is difficult to... 

Siemens Westinghouse Power Corporation has built a tubular SOFC which has its stack integrated with a reformer for reforming higher hydrocarbons present in natural gas. 

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