asifma

• Navarrete, Laura; Almar, Laura; Tarach, Mateusz; Vøllestad, Einar; Mahmood, Asif & Catalán-Martinez, David [Show all 10 contributors for this article] (2025). Tailoring sintering properties of BaGd0.3La0.7Co2O6-δ steam electrodes for pressurized tubular proton-ceramic electrolysis cells. Journal of the European Ceramic Society. ISSN 0955-2219. 45(5), p. 1–8. doi: 10.1016/j.jeurceramsoc.2024.117162. Full text in Research Archive Show summary

  We herein address manufacturing constraints related to the high-temperature sintering step required for reaching adequate adhesion of oxygen/steam electrodes on proton ceramic electrolytes, particularly in tubular geometry. Incorporating various sintering aids such as Cu, Co, and Ni oxides improves the sinterability of the electrodes and reduces the sintering temperature to 950 °C. The ceramic-ceramic composite electrodes based on BaGd0.3La0.7Co2O6-δ (BGLC37) and BaZr0.7Ce0.2Y0.1O6-δ (BZCY) show good and robust electrode-electrolyte adhesion. Composite electrodes were tested under different operation conditions, i.e., temperatures and oxygen partial pressures in symmetrical cell configuration, achieving apparent polarisation resistances below 0.6 Ω·cm2 at 600 °C in wet air for all the electrodes with sintering aids. Finally, BGLC37/BZCY with 2 wt% of CuO electrodes were successfully applied on pre-reduced and sealed BZCY/Ni-supported tubular half-cells with 16 cm2 active area and measured in electrolysis mode at 600 °C and high steam pressure. The results open a route to manufacturing steam electrodes for large-scale electrolysis cells.

• Yousaf, Muhammad; Zaman, Muhammad; Mahmood, Asif; Imran, Muhammad; Elkamel, Ali & Rizwan, Md [Show all 8 contributors for this article] (2022). Carbon dioxide utilization: A critical review from multiscale perspective. Energy Science & Engineering. ISSN 2050-0505. doi: 10.1002/ese3.1303. Full text in Research Archive Show summary

  Carbon dioxide (CO2) emissions contribute considerably towards increasing greenhouse effect. Carbon capture and storage can reduce CO2 emissions to a great extent but lacks economic feasibility. The economic feasibility of CO2 capture could be boosted by utilizing the captured gas to produce valuable end products. CO2 is a highly stable molecule; therefore, special catalysts and elevated conditions of temperature and pressure are required for its conversion. This review presents the current status of CO2 utilization processes from various aspects, including thermodynamic, economic, and environmental impacts. The use of process systems engineering (PSE) tools and techniques in a broad spectrum, to improve the technical, economic, and environmental feasibility of these processes, is the major focus of this review. In this regard, a framework has also been presented showing the integration of various PSE techniques. All the related information in the form of tabulated data as well as qualitative and quantitative plots have been presented and critically analyzed.

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• Øygarden, Vegar; Vøllestad, Einar; Denonville, Christelle; Vistad, Ørnulv Bjørnsson; Mahmood, Asif & Norby, Truls [Show all 7 contributors for this article] (2022). Development of surface protonic fuel cells. Full text in Research Archive
• Øygarden, Vegar; Mahmood, Asif; Vøllestad, Einar; Denonville, Christelle; Norby, Truls & Rørvik, Per Martin (2021). Development of electrodes and complete electrochemical cells based on surface protonics. Full text in Research Archive
• Øygarden, Vegar; Mahmood, Asif; Vøllestad, Einar; Denonville, Christelle; Norby, Truls & Rørvik, Per Martin (2021). Development of electrochemical cells based on surface protonics. Full text in Research Archive
• Øygarden, Vegar; Vøllestad, Einar; Denonville, Christelle; Vistad, Ørnulv Bjørnsson; Mahmood, Asif & Norby, Truls [Show all 7 contributors for this article] (2021). Development of electrodes and complete electrochemical cells based on surface protonics. Full text in Research Archive

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