Evaluation of steady-state characteristics for solid oxide carbon fuel cell short-stacks

Mushtaq, Usman; Mehran, Muhammad Taqi; Kim, Sun-Kyoung; Lim, Tak‐Hyoung; Naqvi, Syed Asad Ali; Lee, Jun Young; Lee, Seung-Bok; Park, Seok-Joo; Song, Rak‐Hyun

doi:10.1016/j.apenergy.2016.11.015

Cited by 11 publications

(1 citation statement)

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“…Upon successful fabrication of the half-cell, i.e., electrode-supported membrane, device fabrication is completed by attaching an electrode over the membrane by screen printing 42 or brush 50 , 51 or dip coating. 52 Physical adhesion is achieved with a lower temperature thermal treatment than that used for membrane densification. Once completed, it requires effective integration into a test apparatus for performance evaluation.…”

Section: Introductionmentioning

confidence: 99%

Development of Electrode-Supported Proton Conducting Solid Oxide Cells and their Evaluation as Electrochemical Hydrogen Pumps

Mushtaq

Welzel

Sharma

et al. 2022

ACS Appl. Mater. Interfaces

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Protonic ceramic solid oxide cells (P-SOCs) have gained widespread attention due to their potential for operation in the temperature range of 300–500 °C, which is not only beneficial in terms of material stability but also offers unique possibilities from a thermodynamic point of view to realize a series of reactions. For instance, they are ideal for the production of synthetic fuels by hydrogenation of carbon dioxide and nitrogen, upgradation of hydrocarbons, or dehydrogenation reactions. However, the development of P-SOC is quite challenging because it requires a multifront optimization in terms of material synthesis and fabrication procedures. Herein, we report in detail a method to overcome various fabrication challenges for the development of efficient and robust electrode-supported P-SOCs (Ni-BCZY/BCZY/Ni-BCZY) based on a BaCe 0.2 Zr 0.7 Y 0.1 O 3−δ (BCZY271) electrolyte. We examined the effect of pore formers on the porosity of the Ni-BCZY support electrode, various electrolyte deposition techniques (spray, spin, and vacuum-assisted), and thermal treatments for developing robust and flat half-cells. Half-cells containing a thin (10–12 μm) pinhole-free electrolyte layer were completed by a screen-printed Ni-BCZY electrode and evaluated as an electrochemical hydrogen pump to access the functionality. The P-SOCs are found to show a current density ranging from 150 to 525 mA cm –2 at 1 V over an operating temperature range of 350–450 °C. The faradaic efficiency of the P-SOCs as well as their stability were also evaluated.

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