Assessment of graphite-based materials for use in SOFC systems

用于 SOFC 系统的石墨基材料的评估

• 批准号: 491747-2015
• 负责人: Birss, Viola
• 金额: $ 1.82万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=587082
• 关键词: Assessment; graphite; based; materials; use

Historically, energy delivery in Canada has focused on large, centralized electricity generation (e.g., coal, natural gas, nuclear), combined with long-distance, high-voltage transmission lines. However, this infrastructure is overextended, the demand for reliable, cleaner and more efficient energy delivery is growing, and alternatives to transport diesel in remote communities is continually being sought. Small scale, 1-10 kW solid oxide fuel cell (SOFC) power systems offer a complementary alternative to existing infrastructure, as this scalable technology can run on hydrocarbons and is fuel flexible, while being able to deliver on-demand electricity. To achieve commercial success, key issues in the further development of SOFCs that must be addressed include decreasing material and production costs. Restoration Energy Inc. (REI) is developing a highly efficient, small footprint, cost competitive SOFC energy conversion system that provides 3 to 10 kW of ac power. To accelerate this, REI is examining the use of low cost alternate materials to replace expensive heavy materials inside their SOFC system's hot zone and balance of plant region. REI is supporting this ENGAGE project with the University of Calgary for the purpose of identifying and testing alternative materials. The specific focus will be on commercially available, surface modified graphites adapted for high temperature applications, but also could include carbon composites and carbon-ceramic composites. Critical high temperature properties that will be assessed under variable gas atmosphere include the oxidation resistance (both loss of material and formation of pores over time), thermal and electrical conductivity, thermal expansion, and compatibility with other SOFC stack components. This information will be used to propose practical, cost effective strategies for replacing components in REI's currently developed SOFC power system.

从历史上看，加拿大的能源输送主要集中于大型集中式发电（例如煤炭、天然气、核能）以及长距离高压输电线路。然而，这种基础设施已经过度扩张，对可靠、清洁和更高效的能源输送的需求不断增长，并且人们不断寻求偏远社区运输柴油的替代方案。小型 1-10 kW 固体氧化物燃料电池 (SOFC) 电力系统为现有基础设施提供了补充替代方案，因为这种可扩展技术可以使用碳氢化合物运行，并且燃料灵活，同时能够按需提供电力。 为了取得商业成功，进一步开发 SOFC 必须解决的关键问题包括降低材料和生产成本。 Restoration Energy Inc. (REI) 正在开发一种高效、占地面积小、具有成本竞争力的 SOFC 能源转换系统，可提供 3 至 10 kW 的交流电。 为了加速这一进程，REI 正在研究使用低成本替代材料来取代其 SOFC 系统热区和工厂平衡区域内昂贵的重型材料。 REI 正在与卡尔加里大学一起支持这个 ENGAGE 项目，旨在识别和测试替代材料。 具体重点将是适用于高温应用的市售表面改性石墨，但也可能包括碳复合材料和碳陶瓷复合材料。 将在可变气体气氛下评估的关键高温特性包括抗氧化性（随着时间的推移材料的损失和孔隙的形成）、导热性和导电性、热膨胀以及与其他 SOFC 堆组件的兼容性。 该信息将用于提出实用且具有成本效益的策略来更换 REI 目前开发的 SOFC 电力系统中的组件。