Selective Synthesis, Structures, and Properties of Oxynitride Materials

现代社会是由技术实现的，新材料使现代技术成为可能。在这个项目中，由材料研究部的固态和材料化学和陶瓷计划支持，James Neilson教授和他的研究团队将推进材料合成科学，以扩大一个代表性不足的材料家族，这些材料在历史上一直具有挑战性。该项目的目标化学物质为能源收集，转换和存储应用提供了新的材料系统，这些系统将转向全固态锂离子和下一代锂离子电池，而不仅仅是汽车电气化和基于电网的能源存储的直接国家利益所需的锂离子电池。这项研究有可能通过发现用于高效照明，电子和催化的新材料来影响其直接范围之外的领域。该项目整合了一个具有广泛影响力的教育推广计划，以开发和分发科学，技术，工程和数学（STEM）教育活动套件，为整个科罗拉多的中学提供功能材料化学领域的90分钟真实研究经验。技术总结由材料研究部的固态和材料化学与陶瓷计划支持，旨在选择性地合成新的氮氧化物基材料，并了解由此产生的结构/性能关系。对于已经发现的杂阴离子材料，具有两种阴离子的结果使得能够相对于它们的单阴离子同类物具有增强的和独特的性质。然而，氮氧化物很难通过化学计量控制合成，特别是对于后过渡金属。该项目旨在通过采用固态材料化学合成科学的最新进展来扩展这类代表性不足的氮氧化物基材料。具体而言，该项目1）在有针对性的探索性化学反应中合成新的氮氧化物材料，2）了解氮氧化物的结构和组成关系，特别是与阴离子无序有关，3）了解这些材料独特的电化学和离子特性，以用于电化学储能。该项目还通过开发和分发科学、技术、工程、和数学（STEM）教育活动包，方便90-在中学课堂上对功能材料的化学进行分钟的研究经验。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响进行评估，被认为值得支持审查标准。

NON-TECHNICAL SUMMARY Modern society is enabled by technology, and new materials enable modern technologies. In this project, supported by the Solid State and Materials Chemistry and Ceramics programs in the Division of Materials Research, Prof. James Neilson and his research team will advance the science of materials synthesis to expand an underrepresented family of materials that have been historically challenging to synthesize. The targeted chemistries of this project present novel materials systems for applications in energy harvest, conversion, and storage that move toward all-solid-state lithium ion and next-generation, beyond Li-ion batteries needed for the immediate national interests of vehicle electrification and grid-based energy storage. This research has the potential to impact fields beyond its immediate scope by discovering new materials for efficient lighting, electronics, and catalysis. This project integrates a broadly impacting educational outreach program to develop and distribute Science, Technology, Engineering, and Mathematics (STEM) education activity kits that provide 90-minute authentic research experiences in the field of the chemistry of functional materials to secondary schools throughout Colorado.TECHNICAL SUMMARY This project, supported by the Solid State and Materials Chemistry and Ceramics programs in the Division of Materials Research, seeks to selectively synthesize new oxynitride-based materials and to understand the resulting structure/property relationships. For the heteroanionic materials that have been discovered, the result of having two anions enables enhanced and unique properties relative to their single-anion congeners. However, oxynitrides are hard to synthesize with stoichiometric control, particularly for later transition metals. This project seeks to expand this underrepresented class of oxynitride-based materials by employing recent advances in solid-state materials chemistry synthesis science. Specifically, this project 1) synthesizes new oxynitride materials in targeted, exploratory chemical reactions, 2) understands the structure and compositional relationships of oxynitrides, particularly as it pertains to anionic disorder, and 3) understands the unique electrochemical and ionic properties of these materials for potential applications in electrochemical energy storage. This project also 4) provides educational outreach throughout Colorado by developing and distributing Science, Technology, Engineering, and Mathematics (STEM) education activity kits that facilitate 90-minute research experiences on the chemistry of functional materials in secondary school classrooms.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.