Solid oxide fuel cell system for automobiles

Solid oxide fuel cell (SOFC) is a clean and efficient energy conversion device, which possesses great application prospects in automobiles. In this review, we not only introduce the simple SOFC system configuration, but also mention two ways to improve its efficiency: anode tail gas recycle (ATGR) and reasonable heat recovery. Moreover, we highlight that the use of SOFC-based hybrid power system (such as SOFC-ICE and SOFC-PEMFC) can further improve the efficiency and feasibility. In addition, the applications of SOFC system as auxiliary power unit (APU) for the heavy truck and as a range extender for electric vehicle are introduced. Despite these broad application prospects, several existing technical challenges, including the long start-up time and energy management issues, are also discussed. Facing these challenges, future research directions are proposed to improve the technical maturity of SOFC system for automobiles.