在金属有机框架中使用的长期储能:机遇和挑战
Peng Peng1, Henry Z H Jiang2,3, Stephanie Collins1,4
1Energy Analysis and Environmental Impacts Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
概括
金属有机框架 (MOFs) 显示出对储存的前景,可能会优于低温和压缩系统,用于不频繁的使用. 然而,MOFs需要在频繁循环应用中提高成本竞争力.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 储能 储能 储能 储能 储能 储能
背景情况:
- (H2) 是一个关键的低碳能源载体,基于材料的储存对其广泛采用至关重要.
- 金属有机框架 (MOF) 是用于储存H2的有希望的吸附剂,但它们对压缩H2储存的经济可行性需要进一步评估.
- 在各种长期储能应用中,对MOF的技术性能要求仍然不清楚.
研究的目的:
- 评估MOF材料特性和充/放电周期对储能性能的影响.
- 在长期储能应用中为MOFs提出部署目标,例如备用电源,负载优化和混合动力系统.
- 确定基于MOF的储存的关键挑战和未来研究方向.
主要方法:
- 分析MOF材料特性及其对吸收和释放动态的影响.
- 充/放电周期的建模,以评估不同应用场景下的性能.
- 技术经济评估将MOF储存与传统压缩和冷储存系统进行比较.
主要成果:
- 最先进的MOF可以在每年不到8个循环的应用中超过冷和350bar压缩存储.
- 对于每年30个或更多周期的应用,MOFs需要至少增加5g/L的吸收,以使其具有成本竞争力.
- 在大规模的MOF制造和量化低压储存的经济效益方面仍然存在挑战.
结论:
- 基于MOF的储能为特定的低循环应用提供了传统方法的可行替代方案.
- 为了使MOF在高循环应用中竞争,需要显著的材料改进,特别是在重力测量吸收方面.
- 未来的研究应该集中在可扩展的制造,经济估值,并将热力学和降解效应整合到MOF性能模型中.
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