ACT/SGER: Development of Nanoparticulate Coatings for Fe(VI) Ferrate Batteries

ACT/SGER：开发高铁酸铁电池纳米颗粒涂层

• 批准号: 0441575
• 负责人: Marc Anderson
• 金额: --
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-01-01 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0441575&HistoricalAwards=false
• 关键词: ACT; SGER; Development; Nanoparticulate; Coatings

There is a need to develop advanced battery materials that provide higher energies than are available at present. Salts of the ferrate anion (FeO4) could serve this purpose because of the 3-electron transfer that occurs in these materials. To date, however, applications of ferrates are limited by chemical instability and incomplete utilization of the 3-electron transfer. In earlier studies, we have developed standard procedures for ferrate synthesis and determination of ferrate purity. Studies of ferrate instability in various electrolytes have been initiated and will continue during this project. The focus of this project is on improving the stability of various ferrate salts by coating them with thin films of nanoparticulate oxides, using techniques that have been successfully applied to improve the recharge characteristics of lithium-based cathode materials in collaboration with Argonne National Laboratory. Selected properties of coated ferrate salts used as cathodes will be measured, and their electrochemical behavior versus zinc and lithium anodes will be evaluated. Researchers at both Argonne National Laboratory and Rayovac Corp. will assist with the required electrochemical characterization.Presently available batteries are limited in terms of both the energy that they can store, and the power that they can deliver to electronic devices. Highly oxidized iron materials, called ferrates, offer the possibility of improving battery design and performance. Studies to date, however, indicate that ferrates are not stable during long-term storage, and the amount of energy that they deliver in practice is significantly less than the theoretical limit. In this project we will attempt to improve the stability of ferrate materials by applying extremely thin coatings of nanoparticulate oxides to control the interaction with other battery materials that compromise ferrate integrity and performance. Successful completion of this project could lead to production of rechargeable batteries that deliver significantly more energy and power than present battery designs. The Approaches to Combat Terrorism Program in the Directorate for Mathematics and Physical Sciences supports new concepts in basic research and workforce development with the potential to contribute to national security.

有必要开发出比目前可用的高级电池材料。由于在这些材料中发生的3电子转移，铁酸阴离子的盐（FEO4）可以达到此目的。然而，迄今为止，Ferrates的应用受到化学不稳定性的限制和3电子转移的不完全利用。在较早的研究中，我们开发了铁质纯度和确定铁质纯度的标准程序。已经启动了各种电解质中的铁酸盐不稳定的研究，并将在此项目期间继续进行。该项目的重点是通过使用已成功应用的技术与Argonne National Laboratory合作改善基于锂基的阴极材料的补给特性，将它们与纳米氧化物的薄膜涂覆，以改善各种铁酸盐的稳定性。将测量用作阴极的涂层铁酸盐的选定特性，并将评估它们的电化学行为与锌和锂阳极。 Argonne国家实验室和Rayovac Corp.的研究人员将有助于进行所需的电化学表征。可用的电池在可以存储的能量以及可以传递到电子设备的能源方面有限。高度氧化的铁材料（称为Ferrates）提供了改善电池设计和性能的可能性。然而，迄今为止的研究表明，长期存储期间的运输不稳定，实践中它们提供的能量量大大低于理论极限。 在这个项目中，我们将尝试通过施加极薄的纳米氧化物涂料来控制与其他电池材料的相互作用，从而提高铁ate材料的稳定性。该项目的成功完成可能会导致可充电电池的生产，这些电池可提供比目前的电池设计更大的能量和功率。 数学和物理科学局中打击恐怖主义计划的方法支持基础研究和劳动力发展中的新概念，有可能为国家安全做出贡献。