关于金属化物用于静止储存的技术经济见解
Xinyi Wang1,2, Peng Peng1, Matthew D Witman3
1Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|April 3, 2025
概括
金属化物为静止电源提供紧的,具有成本效益的储存. 这些系统需要更少的土地,并且可以与压缩气体竞争,特别是在优化充电和材料成本的情况下.
科学领域:
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
- 化学工程是化学工程的重要组成部分.
背景情况:
- 金属化物 (MHs) 是用于在环境条件下储存高密度的先进材料.
- MH系统正在成为固定发电中的燃料电池应用的可行选择.
- 最近的进步使MH系统能够在适合电网规模储能的压力和温度下运行.
研究的目的:
- 对长期应用的金属化物基储能设施进行全面的设计和成本分析.
- 为 MH 存储系统提供对材料开发目标和运营战略的洞察力.
- 与压缩气体系统相比,评估MH存储的经济可行性和物理足迹.
主要方法:
- 基于MH的储能系统的设计和经济建模,用于各种功率需求 (0-20MW) 和持续时间 (0-100小时).
- 对MH存储足迹与170bar压缩气体存储的比较分析.
- 与350巴压缩气体系统相比,成本竞争力的评估,包括具体的材料成本预测.
主要成果:
- 压缩气体储存系统具有显著的物理足迹优势,需要比压缩气体储存少65%的土地.
- 特定的MH配方,如TiFe0.85Mn0.05和复杂的Mg{NH2) 2-2.1LiH-0.1KH,在0.45美元/千瓦时和0.38美元/千瓦时的成本竞争力.
- 通过延长充电时间和增加运行周期,特别是对于复杂的 MHs,存储的水平化成本大幅降低.
结论:
- 基于MH的储存是长期储存的有希望的技术,可以大大节省空间.
- 通过已建立的压缩气体技术可以实现成本竞争力,通过运营优化可以进一步降低成本.
- 提高MH竞争力的关键策略包括废热整合,减少关键矿物使用,并将MH生产成本降至10美元/公斤.
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