Solid oxide fuel cell operating on liquid organic hydrogen carrier-based hydrogen – making full use of heat integration potentials. (18th January 2018)

• Record Type: Journal Article
• Authors: Preuster, Patrick; Fang, Qingping; Peters, Roland; Deja, Robert; Nguyen, Van Nhu; Blum, Ludger; Stolten, Detlef; Wasserscheid, Peter
• Is Part Of: International journal of hydrogen energy. Volume 43:Number 3(2018)
• Page Start: 1758
• Page End: 1768
• Publication Date: 2018-01-18
• Subjects: LOHC -- SOFC -- Hydrogen storage -- Heat integration -- Off-grid energy supply -- Future energy systems; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2017.11.054
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Our contribution demonstrates the technological potential of coupling Liquid Organic Hydrogen Carrier (LOHC)-based hydrogen storage and hydrogen-based Solid Oxide Fuel Cell (SOFC) operation. As SOFC operation creates waste heat at a temperature level of more than 600 °C, clever heat transfer from the SOFC operation to the LOHC dehydrogenation process is possible and results in an overall efficiency of 45% (electric output of SOFC vs. lower heating value of LOHC-bound hydrogen). Moreover, we demonstrate that LOHC vapour does not harm the operational stability of a typical 150 W SOFC short stack. By operating the stack with LOHC-saturated hydrogen, operation times of more than 10 years have been simulated without noticeable degradation of SOFC performance. Highlights: SOFC operation with LOHC-stored hydrogen. Overall efficiency is 45%. LOHC vapour does not harm the SOFC.