Development of HT-PEFC stacks in the kW range

Janssen, Hans-Karl; Supra, Jen; Lüke, Lukas; Lehnert, Werner; Stolten, Detlef

doi:10.1016/j.ijhydene.2013.01.127

Cited by 28 publications

(6 citation statements)

References 42 publications

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“…In order to optimize the heat exchange between stack and reforming reactor and minimize unwanted convection heat losses the gas flows through the anode and cathode side of the stack are an important factor as air cooling is a commonly used technique for HT-PEMFC. Typically air cooling can be reasonably used for stacks with an electrical power output <5 kW [2,19,20]. This shows especially the importance of the cathode air flow on the overall heat balance of the system.…”

Section: Methodsmentioning

confidence: 99%

Heat and fuel coupled operation of a high temperature polymer electrolyte fuel cell with a heat exchanger methanol steam reformer

Schuller

Vázquez

Waiblinger

et al. 2017

Journal of Power Sources

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In this work a methanol steam reforming (MSR) reactor has been operated thermally coupled to a high temperature polymer electrolyte fuel cell stack (HT-PEMFC) utilizing its waste heat. The operating temperature of the coupled system was 180 °C which is significantly lower than the conventional operating temperature of the MSR process which is around 250 °C. A newly designed heat exchanger reformer has been developed by VTT (Technical Research Center of Finland LTD) and was equipped with commercially available CuO/ZnO/Al 2 O 3 (BASF RP-60) catalyst. The liquid cooled, 165 cm², 12-cell stack used for the measurements was supplied by Serenergy A/S. The off-heat from the electrochemical fuel cell reaction was transferred to the reforming reactor using triethylene glycol (TEG) as heat transfer fluid. The system was operated up to 0.4 A cm-2 generating an electrical power output of 427 W el. A total stack waste heat utilization of 86.4 % was achieved. It has been shown that it is possible to transfer sufficient heat from the fuel cell stack to the liquid circuit in order to provide the needed amount for vaporizing and reforming of the methanol-water-mixture. Furthermore a set of recommendations is given for future system design considerations.

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Section: Methodsmentioning

confidence: 99%

Heat and fuel coupled operation of a high temperature polymer electrolyte fuel cell with a heat exchanger methanol steam reformer

Schuller

Vázquez

Waiblinger

et al. 2017

Journal of Power Sources

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show abstract

“…Commercially available MEAs on the basis of phosphoric-acid-doped polybenzimidazole (PBI) membranes were used in the stacks. Further information on the HT-PEFC stack technology at Jülich is available in (4). Information on the autothermal reformer used in this system has been published in (5).…”

Section: System Designmentioning

confidence: 99%

Operational Experience from a 5 kW_e HT-PEFC System with Reforming of Diesel and Kerosene

et al. 2013

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An integrated fuel cell system consisting of a fuel processor for diesel and kerosene and high-temperature polymer electrolyte fuel cell (HT-PEFC) stacks was developed and tested. This paper reports on the operational experience from system tests with different middle distillates. The key components, the autothermal reformer and the HT-PEFC stack, showed robust performance during system tests. An electrical peak power of 5.56 kW was reached in the system. Performance losses were observed for the water-gas shift reactor as well as for the catalytic burner. Due to the limited partial load capability of the reformer, the system was operated with constant reformer load. As a consequence, the hydrogen utilization of the stack was rather low at partial load operation of the system. The target hydrogen utilization of 83% was realized at the target maximum system power of 5 kW.

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“…The HT-PEMFC stack is characterized by its portability, high energy conversion efficiency, lack of electrolyte loss, ease of assembly and production, and long operating lifetime [4]. In the last decade, research teams around the world have paid close attention to the high-temperature proton exchange membrane fuel cell stack (HT-PEMFC) stack (120~200 °C) [5,6,7].…”

Section: Introductionmentioning

confidence: 99%

In-Situ Measurement of High-Temperature Proton Exchange Membrane Fuel Cell Stack Using Flexible Five-in-One Micro-Sensor

Lee

Weng

Kuo

et al. 2016

Sensors

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In the chemical reaction that proceeds in a high-temperature proton exchange membrane fuel cell stack (HT-PEMFC stack), the internal local temperature, voltage, pressure, flow and current nonuniformity may cause poor membrane material durability and nonuniform fuel distribution, thus influencing the performance and lifetime of the fuel cell stack. In this paper micro-electro-mechanical systems (MEMS) are utilized to develop a high-temperature electrochemical environment-resistant five-in-one micro-sensor embedded in the cathode channel plate of an HT-PEMFC stack, and materials and process parameters are appropriately selected to protect the micro-sensor against failure or destruction during long-term operation. In-situ measurement of the local temperature, voltage, pressure, flow and current distributions in the HT-PEMFC stack is carried out. This integrated micro-sensor has five functions, and is favorably characterized by small size, good acid resistance and temperature resistance, quick response, real-time measurement, and the goal is being able to be put in any place for measurement without affecting the performance of the battery.

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Development of HT-PEFC stacks in the kW range

Cited by 28 publications

References 42 publications

Heat and fuel coupled operation of a high temperature polymer electrolyte fuel cell with a heat exchanger methanol steam reformer

Heat and fuel coupled operation of a high temperature polymer electrolyte fuel cell with a heat exchanger methanol steam reformer

Operational Experience from a 5 kW_e HT-PEFC System with Reforming of Diesel and Kerosene

In-Situ Measurement of High-Temperature Proton Exchange Membrane Fuel Cell Stack Using Flexible Five-in-One Micro-Sensor

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Development of HT-PEFC stacks in the kW range

Cited by 28 publications

References 42 publications

Heat and fuel coupled operation of a high temperature polymer electrolyte fuel cell with a heat exchanger methanol steam reformer

Heat and fuel coupled operation of a high temperature polymer electrolyte fuel cell with a heat exchanger methanol steam reformer

Operational Experience from a 5 kWe HT-PEFC System with Reforming of Diesel and Kerosene

In-Situ Measurement of High-Temperature Proton Exchange Membrane Fuel Cell Stack Using Flexible Five-in-One Micro-Sensor

Contact Info

Product

Resources

About

Operational Experience from a 5 kW_e HT-PEFC System with Reforming of Diesel and Kerosene