Understanding and Controlling Ionic Behaviors in Heterostructured Metal-Organic-Frameworks for Selective Magnesium Ion Transport

了解和控制异质结构金属有机框架中的离子行为以实现选择性镁离子传输

• 批准号: 2126923
• 负责人: Dunwei Wang
• 金额: $ 60万
• 依托单位: Boston College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2126923&HistoricalAwards=false
• 关键词: Understanding; Controlling; Ionic; Behaviors; Heterostructured

Non-technical summary: Controlling ionic transport in solid-state materials is of fundamental importance. For example, being able to selectively move ions in a solid-state film may enable the utilization of cheap and safe materials (such as magnesium) for next-generation batteries. A critical challenge limiting research progress in this area is the difficulty in achieving the desired selectivity. That is, it is exceedingly difficult to promote the movement of one type of ion and to suppress others. A promising solution to this problem is to combine multiple material components into a single solid-state structure. The resulting material greatly expands the possibility of selective ion transport. With funding from the Solid State and Materials Chemistry Program in the Division of Materials Research, Drs. Wang, Bao, and Mohanty from Boston College build and study a new type of architecture in solid-state films that has the potential for fast and selective magnesium ion transport. They chose a versatile metal-organic framework as a model platform, which includes multiple-component structured layers. The overall structure is expected to promote magnesium ion transport while suppressing the movement of unwanted species. To enhance the impacts of the project, educational opportunities are provided to engage undergraduate researchers in the research project. Moreover, complementary outreach activities are developed to inform the general public of the implications of materials research for a sustainable future. Technical summary: With funding from the Solid State and Materials Chemistry Program in the Division of Materials Research, this project investigates fast and selective transport of multivalent ions (e.g., Mg) in metal-organic framework (MOF) based materials. Drs. Wang, Bao, and Mohanty from Boston College leverage their expertise in synthesis, electrochemical characterization, material design, and theoretical and computational toolsets for ionic transport. They collaborate to test the hypothesis that fast and selective transport of multivalent ions through MOF-based materials can be achieved through tuning the structural components. The distinctiveness of the study is the design of a MOF-based heterostructure platform that consists of multiple-component layers, suitably tailored to enable Mg2+ transport, suppressing the movement of the solvent molecules and the anions, while maintaining reasonable conductivity. The research efforts are complemented with educational plans aimed at broadening the impacts by engaging undergraduate researchers in the project, and the researchers’ activities to educate the general public about the significance of materials research for a sustainable future.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

非技术综述：控制固态材料中的离子传输是至关重要的。例如，能够选择性地移动固态薄膜中的离子，可能会使下一代电池使用廉价而安全的材料(如镁)。限制这一领域研究进展的一个关键挑战是难以实现所需的选择性。也就是说，要促进一种离子的运动而抑制另一种离子的运动是极其困难的。解决这一问题的一个很有前途的解决方案是将多个材料成分组合成一个单一的固态结构。由此产生的材料极大地扩展了选择性离子传输的可能性。在材料研究部固态与材料化学项目的资助下，波士顿学院的Wang、Bao和Mohanty博士在固态薄膜中建立和研究了一种新型的结构，这种结构具有快速和选择性地传输镁离子的潜力。他们选择了一种多功能的金属有机框架作为模型平台，其中包括多组分的结构层。整体结构有望促进镁离子的运输，同时抑制有害物质的移动。为了加强该项目的影响，提供了教育机会让本科生研究人员参与该研究项目。此外，还开展了补充外联活动，让公众了解材料研究对可持续未来的影响。技术概述：在材料研究部固态和材料化学项目的资助下，该项目研究金属有机骨架(MOF)材料中多价离子(如镁)的快速和选择性传输。来自波士顿学院的Wang、Bao和Mohanty博士利用他们在合成、电化学表征、材料设计以及离子传输的理论和计算工具方面的专业知识。他们合作测试了这样一个假设，即通过调整结构成分，可以实现多价离子通过MOF材料的快速和选择性传输。这项研究的独特之处在于设计了一种基于MOF的异质结构平台，该平台由多组份的层组成，适当地定制以实现镁离子的传输，抑制溶剂分子和阴离子的运动，同时保持合理的导电性。研究工作与教育计划相辅相成，旨在通过让本科生研究人员参与该项目来扩大影响，以及研究人员教育公众关于材料研究对可持续未来的重要性的活动。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。