Novel diagnostic tools and techniques for monitoring and control of SOFC stacks - understanding mechanical and structural change

用于监测和控制 SOFC 电堆的新型诊断工具和技术 - 了解机械和结构变化

• 批准号: EP/M02346X/1
• 负责人: Nigel Brandon
• 金额: $ 102万
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FM02346X%2F1
• 关键词: Novel; diagnostic; tools; techniques; monitoring

The Republic of Korea has world leading expertise in the deployment and scale up of Solid Oxide Fuel Cell (SOFC) technologies. The UK has world class expertise in underpinning science and engineering of SOFC materials and devices. Large-scale trials by HK Oil and others have revealed unsatisfactory durability at steady state operating conditions in the anode supported SOFC stacks under development in Korea, as well as poor tolerance to thermal cycling. This reflects that fact that scaling up SOFC technology introduces additional challenges related (in particular) to non-uniform distribution of reactants, products and temperature within the fuel cell stack. Some steady state degradation can be attributed to classical SOFC issues of cathode poisoning, phase segregation and anode Ni coarsening. However, rapid failure, cycling intolerance and step changes in performance are most likely associated with mechanical issues. Understanding the thermal and mechanical environment of the cells in a stack under different conditions and during cycling is therefore key to improving the design and the operating regime of the system to give maximum durability, as these can manifest as additional mechanical and chemical strains within the ceramic materials used for SOFC fabrication, resulting in degradation and in extreme cases failure. Commercial development of SOFC stacks and systems requires a reduction in degradation rate, and an increase to mean time to failure.To address this it is necessary to be both able to monitor the conditions within the fuel cell stack, relating these to state of health, and then using this information to better control the system to maintain stack life, or engineer a controlled shut down so that components can be replaced, extending system life. These advanced monitoring techniques when coupled with validated predictive simulation capability will allow new cell and stack configurations to be developed for high durability and performance.This proposal seeks to develop two novel diagnostic techniques, pioneered by UK partners, and apply them to advanced cell testing and characterisation at partners in Korea . The measurements are used to validate models developed in the UK to relate the measured data to degradation and failure modes, transferring this to Korean partners to offer the potential for real time monitoring and control of SOFC stacks. This will give valuable understanding required to refine and develop the next generation of SOFC systems in the most time efficient manner, and have wider impact on UK and other international developers. The programme will support an exchange of researchers between the UK and Korean partners, supported by two research workshops in the UK, and one in Korea.

大韩民国在固体氧化物燃料电池（SOFC）技术的部署和扩大规模方面拥有世界领先的专业知识。英国在固体氧化物燃料电池材料和设备的基础科学和工程方面拥有世界一流的专业知识。HK Oil和其他公司的大规模试验表明，韩国正在开发的阳极支撑SOFC堆在稳态操作条件下的耐久性不令人满意，并且对热循环的耐受性较差。这反映了这样的事实，即按比例放大SOFC技术引入了与（特别是）燃料电池堆内的反应物、产物和温度的不均匀分布相关的额外挑战。一些稳态退化可归因于阴极中毒、相分离和阳极Ni粗化的经典SOFC问题。然而，快速失效、循环耐受性和性能的阶跃变化最有可能与机械问题相关。因此，了解电池堆中电池在不同条件下和循环期间的热和机械环境是改进系统的设计和操作制度以获得最大耐久性的关键，因为这些可以表现为用于SOFC制造的陶瓷材料内的额外机械和化学应变，导致降解和极端情况下的故障。固体氧化物燃料电池堆和系统的商业开发需要降低退化率，并增加平均故障时间。为了解决这个问题，必须能够监测燃料电池堆内的条件，将这些条件与健康状态相关联，然后使用此信息更好地控制系统以维持堆寿命，或者设计受控关闭以便可以更换组件，延长系统寿命。这些先进的监测技术与经过验证的预测模拟能力相结合，将允许开发新的电池和电池组配置，以实现高耐用性和高性能。该提案旨在开发两种由英国合作伙伴开创的新型诊断技术，并将其应用于韩国合作伙伴的先进电池测试和表征。测量结果用于验证在英国开发的模型，将测量数据与退化和故障模式相关联，并将其转移给韩国合作伙伴，以提供SOFC堆栈的真实的实时监测和控制。这将为以最省时的方式完善和开发下一代SOFC系统提供有价值的理解，并对英国和其他国际开发商产生更广泛的影响。该计划将支持英国和韩国合作伙伴之间的研究人员交流，由英国的两个研究研讨会和韩国的一个研究研讨会提供支持。

项目成果

Effect of Sulfur- and Tar-Contaminated Syngas on Solid Oxide Fuel Cell Anode Materials

硫和焦油污染的合成气对固体氧化物燃料电池阳极材料的影响

• DOI: 10.1021/ef502085q
• 发表时间: 2014
• 期刊: Energy & Fuels
• 影响因子: 5.3
• 作者: Boldrin P

Spherical indentation of porous ceramics: Cracking and toughness

• DOI: 10.1016/j.jeurceramsoc.2016.05.010
• 发表时间: 2016-11-01
• 期刊: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
• 影响因子: 5.7
• 作者: Chen, Zhangwei;Wang, Xin;Brandon, Nigel
• 通讯作者: Brandon, Nigel

Simulated impedance of diffusion in porous media

• DOI: 10.1016/j.electacta.2017.07.152
• 发表时间: 2017-10-10
• 期刊: ELECTROCHIMICA ACTA
• 影响因子: 6.6
• 作者: Cooper, Samuel J.;Bertei, Antonio;Brandon, Nigel P.
• 通讯作者: Brandon, Nigel P.

Numerical Study of Solid Oxide Fuel Cell Contacting Mechanics

固体氧化物燃料电池接触力学的数值研究

• DOI: 10.1002/fuce.201700128
• 发表时间: 2018
• 期刊: Fuel Cells
• 影响因子: 2.8
• 作者: Chen Z

In-situ temperature monitoring directly from cathode surface of an operating solid oxide fuel cell

• DOI: 10.1016/j.apenergy.2020.116013
• 发表时间: 2020-12
• 期刊: Applied Energy
• 影响因子: 11.2
• 作者: E. Guk;M. Ranaweera;V. Venkatesan;Jung-Sik Kim;Woochul Jung