Charalampakis Michalis, Zouridi Leila, Garagounis Ioannis, Vourros Anastasios, Marnellos George E, Binas Vassilios
Department of Chemistry, University of Crete, Vasilika Vouton, Heraklion 70013, Greece.
Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, N. Plastira 100, Vasilika Vouton, Heraklion, Crete 70013, Greece.
Energy Fuels. 2024 Jul 12;38(15):14621-14631. doi: 10.1021/acs.energyfuels.4c00673. eCollection 2024 Aug 1.
In the present work, symmetrical oxide ion conducting solid oxide single cells with inkjet-printed composite LSM-YSZ electrodes, onto commercially available YSZ dense substrates using GDC as buffer interlayer, were fabricated and characterized. Stable inkjet-printable LSM-YSZ nanoparticle inks were developed based on water solvent, after processing with high intensity ball milling. The deposition of LSM-YSZ electrodes was performed by inkjet printing, as well as a conventional additive manufacturing technique, screen printing, in order to compare the electrochemical performance of the produced cells for the reversible charge transfer reaction (O + 4 e ↔ 2 O). The physicochemical properties of the LSM-YSZ nanoparticle ink was investigated to determine ink printability. The electrochemical performance of fabricated inkjet-printed and screen printed symmetrical cells (LSM-YSZ | GDC | YSZ | GDC | LSM-YSZ) exposed under a synthetic air atmosphere was evaluated in a single chamber cell reactor, employing the AC impedance spectroscopy and linear scan voltammetry techniques, at the temperature range of 700-850 °C. The inkjet-printed electrodes exhibited highly homogeneous and porous morphologies with the corresponding cell achieving current densities almost five times higher, up to 1 A/cm at 2 V cell potential and 850 °C, than those of the equivalent screen-printed one. To the best of our knowledge, this is the first successful implementation of water-based inks of LSM-YSZ electrodes in the fabrication of inkjet-printed solid oxide cells.
在本工作中，制备并表征了具有喷墨打印复合LSM-YSZ电极的对称氧化物离子传导固体氧化物单电池，该电极以GDC作为缓冲层，喷墨打印在市售的YSZ致密基板上。经过高强度球磨处理后，基于水溶剂开发了稳定的可喷墨打印的LSM-YSZ纳米颗粒墨水。LSM-YSZ电极的沉积通过喷墨打印以及传统的增材制造技术丝网印刷来进行，以便比较所制备电池在可逆电荷转移反应（O + 4e ↔ 2O）中的电化学性能。研究了LSM-YSZ纳米颗粒墨水的物理化学性质以确定墨水的可印刷性。在单腔电池反应器中，采用交流阻抗谱和线性扫描伏安法技术，在700-850℃的温度范围内，评估了在合成空气气氛下暴露的喷墨打印和丝网印刷对称电池（LSM-YSZ | GDC | YSZ | GDC | LSM-YSZ）的电化学性能。喷墨打印电极呈现出高度均匀且多孔的形态，相应的电池在2V电池电势和850℃下实现的电流密度比等效丝网印刷电池的电流密度高出近五倍，高达1A/cm²。据我们所知，这是LSM-YSZ电极水基墨水首次成功应用于喷墨打印固体氧化物电池的制造中。
