SUSCHEM: Exploring Specific Heating in Microwave-assisted Synthesis of Hierarchical Hybrid Nanomaterials for Future Sustainable Batteries

SUSCHEM：探索微波辅助合成未来可持续电池的分层混合纳米材料中的比热

• 批准号: 1707585
• 负责人: Jun Li
• 金额: $ 29.84万
• 依托单位: Kansas State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-15 至 2022-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1707585&HistoricalAwards=false
• 关键词: SUSCHEM; Exploring; Specific; Heating; Microwave

PART 1:   NON-TECHNICAL SUMMARYBatteries are ubiquitous electrical energy storage devices in our life to support anything from portable electronics to electrical grids. A key component that determines the cost and performance of batteries is the electrode materials. This project, funded by the Solid State Materials and Chemistry Program in the Division of Materials Research at NSF, seeks to develop new methods to prepare novel electrode materials that can be used for two types of emerging batteries, i.e. sodium ion batteries and magnesium ion batteries. These new battery-types use earth-abundant sodium and magnesium ions in electrochemical reactions and hence have the potential to significantly lower the cost of energy storage compared to current state-of-the-art Li-ion batteries, making them attractive for large-scale electrical energy storage. However, currently used single-phase electrode materials in these batteries exhibit poor stability and a short lifetime due to hosting the much larger sodium ions and higher-charged magnesium ions. Therefore this project targets hybrid materials which consist of active electrode materials deposited on stable three-dimensional nanostructured carbon scaffolds. The research approach makes use of the relatively strong microwave absorption by the nanocarbon materials to accelerate the synthesis process and create strong hybrid materials that otherwise may be unstable in separated phases. In addition to creating a better understanding of the fundamental properties of hybrid solid state materials and potentially improving the performance of electrical energy storage devices, this project provides cross-disciplinary training to students from diverse backgrounds including underrepresented groups. All three aspects are critical for maintaining our nation's leading role in the strategically important fields of energy conversion and storage.PART 2:   TECHNICAL SUMMARYThis project, funded by the Solid State Materials and Chemistry Program in the Division of Materials Research at NSF, targets the development of well-controlled three-dimensional (3D) hierarchical hybrid electrode materials for two types of emerging batteries, i.e. sodium ion batteries and magnesium ion batteries, by depositing desired active electrode materials (metal oxides and chalcogenides) on nanostructured carbon templates using an innovative microwave-assisted synthesis method. Rapid heating, based on the specific microwave absorption of the nanocarbon templates, induces rapid nucleation and growth of metastable phases which combine into stable hybrid electrode materials that cannot be readily synthesized with conventional methods. Different types of nanocarbons, including dispersed nanoflakes of reduced graphene oxides (rGOs), stacked 3D films of carbon nanotubes (CNTs) or electrospun carbon nanofibers (CNFs), and arrays of vertically aligned carbon nanofibers (VACNFs), are investigated as highly conductive and mechanically robust templates to control the morphology, composition and phases of the deposited active electrode materials. This provides techniques for synthesizing delicate 3D hierarchical core-shell hybrid materials containing metastable materials such as hydrated metal oxides (V2O5·nH2O bilayers) and metal chalcogenides (VS4 chains) which have more opened structures to facilitate reversible storage of large Na+ ions and divalent Mg2+ ions. Such hybrid hierarchical materials may break the intrinsic limits of single-phase electrode materials by enhancing the electrical conductivity and reducing the ion diffusion path length in the solid materials while significantly improving the electrode's stability. The capability of fast heating by microwave irradiation shortens the materials synthesis processes and greatly accelerates materials discovery and optimization. This project also provides cross-disciplinary training to both graduate and undergraduate students in nanomaterials synthesis/characterization, electrochemistry and electrical energy storage technologies. Outreach activities are aimed at interesting K-12 students (particularly girls) in Kansas in STEM education, and engaging an undergraduate student from Xavier University (underrepresented minority) in summer research and further career development each year.

电池是我们生活中无处不在的电能存储设备，支持从便携式电子设备到电网的任何东西。决定电池成本和性能的关键部件是电极材料。该项目由美国国家科学基金会材料研究部固态材料与化学项目资助，旨在开发新的方法来制备可用于两种新兴电池的新型电极材料，即钠离子电池和镁离子电池。这些新型电池在电化学反应中使用地球上丰富的钠离子和镁离子，因此与目前最先进的锂离子电池相比，它们有可能显著降低能量存储的成本，使它们对大规模电能存储具有吸引力。然而，目前在这些电池中使用的单相电极材料由于承载更大的钠离子和高电荷的镁离子而表现出较差的稳定性和较短的寿命。因此，本项目的目标是将活性电极材料沉积在稳定的三维纳米结构碳支架上。该研究方法利用纳米碳材料相对较强的微波吸收来加速合成过程，并制造出强杂化材料，否则在分离相中可能不稳定。除了更好地了解混合固态材料的基本特性和潜在地提高电能存储设备的性能外，该项目还为来自不同背景的学生提供跨学科培训，包括代表性不足的群体。这三个方面对于保持我国在具有重要战略意义的能源转换和储存领域的领先地位至关重要。本项目由美国国家科学基金会材料研究部固态材料与化学项目资助，旨在为两种新兴电池（即钠离子电池和镁离子电池）开发可控的三维（3D）分层混合电极材料。通过使用一种创新的微波辅助合成方法在纳米结构碳模板上沉积所需的活性电极材料（金属氧化物和硫族化合物）。基于纳米碳模板的特定微波吸收，快速加热诱导亚稳相的快速成核和生长，这些亚稳相结合成稳定的杂化电极材料，这是传统方法难以合成的。研究了不同类型的纳米碳，包括分散的还原氧化石墨烯纳米片（rGOs），堆叠的碳纳米管（CNTs）或电纺丝碳纳米纤维（CNFs）的3D薄膜，以及垂直排列的碳纳米纤维阵列（VACNFs），作为高导电性和机械稳稳性的模板来控制沉积的活性电极材料的形态，组成和相。这为合成精细的三维分层核壳杂化材料提供了技术，该材料含有亚稳材料，如水合金属氧化物（V2O5·nH2O双层）和金属硫族化合物（VS4链），这些材料具有更开放的结构，有利于大Na+离子和二价Mg2+离子的可逆存储。这种混合层次材料可以突破单相电极材料的固有限制，提高导电率，减少离子在固体材料中的扩散路径长度，同时显著提高电极的稳定性。微波辐射的快速加热能力缩短了材料的合成过程，大大加快了材料的发现和优化。该项目还为研究生和本科生提供纳米材料合成/表征、电化学和电能存储技术的跨学科培训。拓展活动针对堪萨斯州有趣的K-12学生（特别是女孩）进行STEM教育，并每年吸引一名来自泽维尔大学的本科生（未被充分代表的少数民族）参加夏季研究和进一步的职业发展。

项目成果

Microwave-assisted high-yield exfoliation of vanadium pentoxide nanoribbons for supercapacitor applications

• DOI: 10.1016/j.electacta.2019.135200
• 发表时间: 2020-01
• 期刊: Electrochimica Acta
• 影响因子: 6.6
• 作者: Ya Chen;K. Muthukumar;Levon Leban;Jun Li

Frontiers in hybrid and interfacial materials chemistry research

• DOI: 10.1557/mrs.2020.271
• 发表时间: 2020-11-01
• 期刊: MRS BULLETIN
• 影响因子: 5
• 作者: Guiton, Beth S.;Stefik, Morgan;Talham, Daniel R.
• 通讯作者: Talham, Daniel R.

High Performance Tin-coated Vertically Aligned Carbon Nanofiber Array Anode for Lithium-ion Batteries

• DOI: 10.1557/adv.2018.520
• 发表时间: 2018-07
• 期刊: MRS Advances
• 影响因子: 0.8
• 作者: G. P. Pandey;K. Jones;Emery Brown;Jun Li;L. Meda

3D printing of hybrid MoS2-graphene aerogels as highly porous electrode materials for sodium ion battery anodes

• DOI: 10.1016/j.matdes.2019.107689
• 发表时间: 2019-05-15
• 期刊: MATERIALS & DESIGN
• 影响因子: 8.4
• 作者: Brown, Emery;Yan, Pengli;Li, Jun
• 通讯作者: Li, Jun

Mechanistic understanding of Li metal anode processes in a model 3D conductive host based on vertically aligned carbon nanofibers

• DOI: 10.1016/j.carbon.2023.118174
• 发表时间: 2023-05-31
• 期刊: CARBON
• 影响因子: 10.9
• 作者: Rajendran，Sabari;Sekar，Archana;Li，Jun
• 通讯作者: Li，Jun