Tarutin Artem P, Baratov Stanislav A, Medvedev Dmitry A
Laboratory of Electrochemical Devices Based on Solid Oxide Proton Electrolytes, Institute of High, Temperature Electrochemistry, Ekaterinburg 620990, Russia.
Institute of Hydrogen Energy, Ural Federal University, Ekaterinburg 620002, Russia.
Materials (Basel). 2022 Sep 5;15(17):6148. doi: 10.3390/ma15176148.
Phases based on layered lanthanide nickelates are considered as promising electrode materials for various electrochemical devices, including solid oxide fuel cells and electrolysis cells. While such compounds may be prepared using either solid state or solution-assisted syntheses, each of these approaches entails certain problems. In the present work, we propose a novel approach for the simple and straightforward preparation of PrNiO-based materials. This approach involves co-melting of initial nitrate components, followed by high-temperature decomposition of the obtained mixture. The developed synthesis method exhibits a number of advantages over conventional techniques, enabling highly dispersed and single-phase powders to be obtained at a reduced synthesis temperature of 1050 °C. Therefore, the results of this work open new possibilities for the cost-effective preparation of Ruddlesden-Popper oxide phases.
基于层状镧系镍酸盐的相被认为是用于包括固体氧化物燃料电池和电解池在内的各种电化学装置的有前景的电极材料。虽然可以使用固态或溶液辅助合成来制备此类化合物，但这些方法中的每一种都存在一定问题。在本工作中，我们提出了一种简单直接制备基于PrNiO的材料的新方法。该方法涉及初始硝酸盐组分的共熔，随后对所得混合物进行高温分解。所开发的合成方法相对于传统技术具有许多优点，能够在1050°C的降低合成温度下获得高度分散的单相粉末。因此，这项工作的结果为以具有成本效益的方式制备Ruddlesden-Popper氧化物相开辟了新的可能性。
