Feasibility study and techno-economic analysis of an SOFC/battery hybrid system for vehicle applications

Aguiar, P.; Brett, Dan J. L.; Brandon, Nigel P.

doi:10.1016/j.jpowsour.2006.12.049

Cited by 38 publications

(22 citation statements)

References 4 publications

(17 reference statements)

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“…Then, both anode and electrolyte were co-sintered at 1450 C for 5 h. Aer co-sintering, the 70 : 30 wt% LSCF-SDC cathode was sprayed onto the halfcell and sintered at 1050 C for 2 h in air. Final cell dimensions are: 2.4 mm outer diameter, 380 mm wall thickness, 80-100 mm in length, and a cathode active area of 60-100 mm 2 , in order to keep the cells in the isothermal zone of the furnace. Microstructures of the cell components were analyzed by eld emission scanning electron microscope (Merlin FE-SEM, Carl Zeiss).…”

Section: Cell Manufacturingmentioning

confidence: 99%

Microtubular solid oxide fuel cells fabricated by gel-casting: the role of supporting microstructure on the mechanical properties

Morales

Laguna‐Bercero

2017

RSC Adv.

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Different cell configurations of anode-supported microtubular solid oxide fuel cells (mT-SOFCs) using samaria-doped ceria (SDC) as the electrolyte were fabricated. Several cells were processed varying the porosity and wall thickness (outer diameter) of NiO-SDC tubular supports. Suitable aqueous slurry formulations of NiO-SDC for gel-casting were prepared using agarose, as a gelling agent, and sucrose, as a pore former. The subsequent NiO-SDC anode functional layer (AFL), the SDC electrolyte and the La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3Àd -SDC cathode were deposited by spray-coating. Afterwards, the electrochemical performance of different single cells was tested under humidified hydrogen as the fuel and air as the oxidant. The mechanical strength of the supporting tubes at different processing stages (green, pre-/ post-sintering, post-reduction, post-redox cycle conditions) were also determined to study the macromechanical failure behaviour of the cells. In addition, the mechanical strength of half-cells with different porosity, sintering temperature and wall thickness in the tubular supports was also determined. For this purpose, the modulus of rupture was measured by a three point bending test. This study shows that the electrochemical properties and mechanical strength are feasible for further development of anodesupported mT-SOFCs fabricated by gel-casting.

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Section: Cell Manufacturingmentioning

confidence: 99%

Microtubular solid oxide fuel cells fabricated by gel-casting: the role of supporting microstructure on the mechanical properties

Morales

Laguna‐Bercero

2017

RSC Adv.

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“…This makes SOFCs more flexible and simpler because they require less process units to operate. However, SOFCs typically have lower power densities and longer start-up times compared to PEFC [26].…”

Section: Comparison Of Pefc and Sofc In Terms Of Heat Recoverymentioning

confidence: 99%

Options for residential building services design using fuel cell based micro-CHP and the potential for heat integration

2015

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“…The actual control input is an algebraic function of that satisfies the desired (3). The ultra-capacitor current command is calculated by (11) where , shown in Fig. 6, is the regulated fuel cell current obtained from the instantaneous fuel flow using (4), .…”

Section: B Adaptive Controllermentioning

confidence: 99%

“…However, there is an increasing interest of using SOFCs in mobile applications, where responsiveness is of paramount importance. In this regard, there is an intent is to outweigh the deficiencies of SOFC systems by their advantages through hybridization [10], [11], and thereby be competitive to PEM fuel cells which have traditionally been considered for hybrid vehicles.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Control of a Solid Oxide Fuel Cell Ultra-Capacitor Hybrid System

Das

Snyder

2013

IEEE Trans. Contr. Syst. Technol.

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Solid oxide fuel cells (SOFCs) offer a number of advantages beyond those of most other fuel cells. However, like other fuel cells, rapid load following is difficult, and can lead to fuel starvation and consequently fuel cell damage. Mitigating fuel starvation and improving load following capabilities are conflicting control objectives. However, the issue can be addressed by the hybridization of the system with an energy storage device. In this paper, a steady-state property of the SOFC, combined with a current regulation strategy, is used to manage transient fuel utilization and thereby address fuel starvation. Meanwhile, an overall system strategy is employed to manage energy sharing in the hybrid system for load following as well as for maintaining the state-of-charge of the energy storage device. This work presents an adaptive control algorithm that uses online parameter estimation to update the controller. The control design is validated on a hardware-in-the-loop setup and experimental results are provided.Index Terms-Adaptive control, fuel utilization, hybrid energy, robust control, solid oxide fuel cell (SOFC), transient, ultra-capacitor.

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Feasibility study and techno-economic analysis of an SOFC/battery hybrid system for vehicle applications

Cited by 38 publications

References 4 publications

Microtubular solid oxide fuel cells fabricated by gel-casting: the role of supporting microstructure on the mechanical properties

Microtubular solid oxide fuel cells fabricated by gel-casting: the role of supporting microstructure on the mechanical properties

Options for residential building services design using fuel cell based micro-CHP and the potential for heat integration

Adaptive Control of a Solid Oxide Fuel Cell Ultra-Capacitor Hybrid System

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