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arXiv 2602.14927cond-mat.mtrl-scicond-mat.othercond-mat.stat-mechphysics.chem-ph
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铁ocene修饰的共价有机框架超越氢气存储极限:一种多尺度计算研究

Ferrocene-functionalized covalent organic framework exceeding the ultimate hydrogen storage targets: a first-principles multiscale computational study

Michigan State University(密歇根州立大学)

Marcus Djokic, Jose L. Mendoza-Cortes

AI总结:

铁ocene修饰的共价有机框架通过多尺度计算研究实现了超越氢气存储极限的性能,为高效氢气存储材料提供了新的解决方案。

摘要:

高效氢气存储材料的发展对于推进氢能经济和实现美国能源部汽车应用目标(6.5 wt%和50 g H2/L)至关重要。我们展示了铁ocene修饰的共价有机框架(COFs)用于氢气存储的计算研究。遵循Multi-binding Sites United in Covalent-Organic Framework(MSUCOF)方法,我们引入了MSUCOF-4-FeCp,该材料通过将铁ocene(FeCp2)基团引入IRCOF-102中设计而成。值得注意的是,该材料在298 K和700 bar条件下实现了优异的性能,其质量吸容量为18.0 wt%,体积吸容量为72.6 g H2/L。该材料表现出最佳的结合能(15-20 kJ/mol),确保了在实际条件下高存储能力和可交付的氢气。本工作确立了铁ocene功能化作为COFs中贵金属掺杂的一种经济有效的替代方案。

英文摘要:

The development of efficient hydrogen storage materials is crucial for advancing the hydrogen economy and meeting the U.S. Department of Energy's targets of 6.5 wt% and 50 g H<sub>2</sub>/L for automotive applications. We present a computational study of ferrocene-functionalized covalent organic frameworks (COFs) for hydrogen storage. Following the <b>M</b>ulti-binding <b>S</b>ites <b>U</b>nited in <b>C</b>ovalent-<b>O</b>rganic <b>F</b>ramework (MSUCOF) approach, we introduce MSUCOF-4-FeCp, designed by incorporating ferrocene (FeCp<sub>2</sub>) moieties into IRCOF-102. Notably, it achieves exceptional performance with gravimetric and volumetric uptakes of 18.0 wt% and 72.6 g H<sub>2</sub>/L at 298 K and 700 bar. The material exhibits optimal binding energies (15-20 kJ/mol) ensuring both high storage capacity and deliverable hydrogen under practical conditions. This work establishes ferrocene functionalization as a cost-effective alternative to precious metal incorporation in COFs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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