Pr₄Ni₃O₁₀ is a promising air electrode for solid oxide fuel cells and electrolysers with comparable performance to Pr₂NiO_4+δ but with improved thermodynamic stability at a cell operating temperature of 600 °C–800 °C. To fully understand and integrate Pr₄Ni₃O₁₀ into commercial devices there are several aspects that remain to be addressed. This study provides a systematic analysis of the synthesis kinetics, crystal structure, oxygen content and electrical conductivity providing clear paths for the development of Pr₄Ni₃O₁₀-based low temperature solid oxide electrochemical devices with enhanced performance and stability. We prove that the material can reach a remarkable electrical conductivity of 235 Scm^-1 at 700 °C in air, much higher than the previously reported values of 86 Scm^-1 and 56 Scm^-1, rising to 278 Scm^-1 at 450 °C. High resolution neutron powder and in-situ X-ray diffraction confirmed that Pr₄Ni₃O₁₀ crystallises in the monoclinic P2₁/a space group, and that no phase transitions were observed on heating to 1000 °C in air. An electrical conductivity anomaly was found at ∼300 °C and is attributed to a subtle change in the local structure of the material, potentially associated with changes in the oxygen content.

Pr ₄ Ni ₃ O ₁₀是一种有前景的用于固体氧化物燃料电池和电解槽的空气电极，其性能可与Pr ₂ NiO _{4 +δ}媲美，但在600°C–800°C的电池工作温度下具有改善的热力学稳定性。为了完全理解并将Pr ₄ Ni ₃ O ₁₀集成到商业设备中，还有几个方面有待解决。这项研究提供了对合成动力学，晶体结构，氧含量和电导率的系统分析，为开发Pr ₄ Ni ₃ O ₁₀提供了清晰的途径。基低温固态氧化物电化学装置，具有增强的性能和稳定性。我们证明了该材料在700°C的空气中可达到235 Scm ^-1的卓越电导率，远高于先前报道的86 Scm ^-1和56 Scm ^-1的电导率，在450°C时可升至278 Scm ^-1 C。高分辨率中子粉末和原位X射线衍射证实，Pr ₄ Ni ₃ O ₁₀在单斜晶P 2 ₁ / a中结晶空间组，并且在空气中加热至1000°C时未观察到相变。在约300°C时发现电导率异常，这归因于材料局部结构的细微变化，这可能与氧含量的变化有关。