![]() Yttria Stabilized Zirconia (YSZ) is a state-of-the-art electrolyte because it possesses adequate oxide-ion conductivity ( ∼ 0.13 Scm −1 at 1000 ☌) and shows desirable phase stability in both oxidizing and reducing atmospheres 5. ![]() During the past few decades, fuel cells, especially solid oxide fuel cells (SOFCs), have attracted significant attention due to their high efficiency, low pollution and low environmental impact at high working temperatures (700–1000 ☌) 4. This observation represents an important step towards commercially viable SOFC technology.Īs the standard technologies based on fossil fuels cannot satisfy the growing demand for energy, the future lies in the implementation of efficient and environmentally friendly technologies to produce electricity, such as hydrogen energy and fuel cells 1, 2, 3. The anode-supported single cell, NiO-BCZYZn05|BCZYZn05|BSCF-BCZYZn05, demonstrates a peak power density of 872 mW cm −2 at 700 ☌ which is one of the highest power density in an all-protonic solid oxide fuel cell. Structural and electrochemical analyses indicate highly dense and high proton conductivity at intermediate temperature (400–700 ☌). Rietveld analysis of the X-ray and neutron diffraction data of BaCe 0.7Zr 0.1Y 0.15Zn 0.05O 3−δ (BCZYZn05) revealed a pure orthorhombic structure belonging to the Pbnm space group. Using same proton conducting material in anodes, electrolytes and cathodes to make a strong structural backbone shows clear advantages in mechanical strength over other arrangements with different materials. We report that adding 5 mol% Zn to the Y-doped barium cerate-zirconate perovskite electrolyte material can significantly improve the sintering properties, mechanical strength, durability and performance. While significant progress has been made in developing proton conducting electrolyte materials, mechanical strength and durability still need to be improved for efficient applications. Protonic ceramic fuel cells (PCFCs) have become the most efficient, clean and cost-effective electrochemical energy conversion devices in recent years.
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