CAREER: Unraveling Oxygen Electrode Delamination Mechanisms in Reversible Solid Oxide Cells for Robust Hydrogen Production

职业：揭示可逆固体氧化物电池中的氧电极分层机制，以实现稳健的氢气生产

• 批准号: 2336465
• 负责人: Xinfang Jin
• 金额: $ 64.84万
• 依托单位: University of Massachusetts Lowell
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-04-01 至 2029-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2336465&HistoricalAwards=false
• 关键词: CAREER; Unraveling; Oxygen; Electrode; Delamination

Reversible solid oxide cells are devices that can switch between two opposite operating modes for hydrogen production and power generation. These devices can potentially revolutionize the way hydrogen is made. Despite the promise, though, use of these devices faces significant challenges due to fast degradation of the cell under prolonged operation. This Faculty Early Career Development (CAREER) award supports research aiming to understand the complex degradation mechanisms within reversible solid oxide cells. By overcoming these challenges, the technology can enable cost-effective use of hydrogen as a clean fuel in industries and the heavy-duty transportation sector. Utilizing hydrogen as a long-term energy storage solution, it also promotes the integration of renewable energy sources into the grid. This research spans multiple disciplines such as solid mechanics, electrochemistry, and advanced imaging. In alignment with UMass Lowell's mission as a Minority Serving Institution, the project seeks to encourage inclusivity by engaging underrepresented groups in energy engineering research and education, fostering a more diverse and inclusive workforce in the field.The rapid degradation in reversible solid oxide cells during electrolysis mode, caused by delamination failure at the oxygen electrode/electrolyte interface, is commonly associated with the buildup of oxygen partial pressure. Significant scientific challenges persist in fully comprehending the mechanisms responsible for the reduced degradation observed under reversible modes, especially with a bilayer oxygen electrode configuration. This research aims to bridge the existing knowledge gap by investigating the intricate interactions between mechanical and chemical stresses at the oxygen electrode-electrolyte interface under dynamic operating conditions, utilizing integrated mechano-electro-chemical approaches. The research will attempt to unravel the complex dynamics of crack initiation and propagation within 3D heterogeneous microstructures of oxygen electrodes from advanced full-field X-ray imaging technique. Through rigorous coupling of model and experiment approaches, the contributions of material variations and structural geometry modifications to performance improvements will be delineated. These findings will make a marked impact on the design of new oxygen electrodes and development of protocols for safe operation of reversible solid oxide cells.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

可逆固体氧化物电池是一种可以在制氢和发电两种相反的操作模式之间切换的设备。这些装置可能会彻底改变制造氢气的方式。尽管前景看好，但由于电池在长时间运行下迅速退化，这些设备的使用面临着巨大的挑战。该学院早期职业发展(CALEAR)奖支持旨在了解可逆固体氧化物电池内复杂降解机制的研究。通过克服这些挑战，该技术可以在工业和重型运输部门以经济高效的方式使用氢气作为清洁燃料。利用氢气作为长期的储能解决方案，还可以促进可再生能源并入电网。这项研究横跨多个学科，如固体力学、电化学和高级成像。与马萨诸塞州大学洛厄尔分校作为少数群体服务机构的使命相一致，该项目寻求通过在能源工程研究和教育中吸收代表不足的群体来鼓励包容性，在该领域培养更多样化和更具包容性的劳动力。可逆固体氧化物电池在电解模式下的快速降解，由氧电极/电解液界面的分层故障引起，通常与氧分压的建立有关。重大的科学挑战仍然是充分理解在可逆模式下观察到的减少降解的机制，特别是在双层氧电极配置的情况下。本研究旨在利用机械-电化学综合方法，研究动态操作条件下氧电极-电解液界面机械应力和化学应力之间的复杂相互作用，以弥合现有的知识鸿沟。这项研究将试图用先进的全场X射线成像技术来揭示氧电极三维非均匀微结构中裂纹萌生和扩展的复杂动力学。通过模型和实验方法的严格耦合，将描述材料变化和结构几何修改对性能改进的贡献。这些发现将对新型氧电极的设计和可逆固体氧化物电池安全运行协议的开发产生显著影响。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。