CAREER: Tuning Interface Atomic Structure and Composition for Fast Ion Conduction

职业：调整界面原子结构和成分以实现快速离子传导

• 批准号: 2042638
• 负责人: William Bowman
• 金额: $ 69.94万
• 依托单位: University of California-Irvine
• 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: 2021-03-01 至 2027-02-28
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2042638&HistoricalAwards=false
• 关键词: CAREER; Tuning; Interface; Atomic; Structure

NON-TECHNICAL DESCRIPTION: Ceramic materials are key components in current and future energy conversion and storage technologies, such as fuel cells, batteries, and devices used to produce hydrogen gas and process carbon dioxide. Improving these technologies relies on understanding and enhancing the ionic conductivity of crucial ceramic materials. New knowledge produced by this research will yield design rules for high-performance engineering materials, and enable unprecedented ceramics for energy conversion, energy storage, and chemical conversion applications. This project combines state-of-the-art nanomaterials fabrication methods, and advanced electron microscopy characterization to explain the behavior of ceramic materials at the atomic level. The research is integrated into a novel outreach and education activity which engages high school students and teachers in activities rich in science and technology, and designed to develop a pipeline of diverse students into science and engineering fields. The new “Science, Technology and Art of Imaging and Recording” (STAIR) outreach activity is bringing high school teachers and students from underrepresented groups in local low-income areas to learn about imaging physics and technology while making art. STAIR leverages general knowledge to engage and educate about imaging hardware (cameras, microscopes), physics (optics, colors, radiation), art (photography, videography), and technology (virtual reality, computer vision). Materials science graduate students funded by this project are trained in advanced nanomaterials synthesis and characterization, preparing them for employment in manufacturing, and research and development in clean energy and semiconductors.TECHNICAL DETAILS: This research elucidates the links between atomic structure, chemical composition, and oxygen anion conductivity across material defects in ion-conducting ceramic materials. Two-dimensional defects (interfaces) are investigated in model multilayer thin films and bicrystals synthesized by state-of-the-art nanofabrication techniques based on pulsed laser deposition. Such interfaces are key to the electrical and electrochemical performance of a wide variety of engineering materials, not just electroceramics. A combination of experiments using advanced transmission electron microscopy (TEM) imaging and spectroscopy techniques capable of directly imaging and identifying atoms, and simulations of anion diffusivity, answer fundamental questions surrounding the behavior of mobile ions near interfaces. This research is attempting to advance fundamental theories of electrical conductivity in ionically-conducting ceramics, uncover atomic-level mechanisms of mass transport across interfaces, and ultimately explain how to best design materials for optimal electrical performance.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.

非技术描述：陶瓷材料是当前和未来能源转换和储存技术的关键组成部分，如燃料电池、电池以及用于生产氢气和处理二氧化碳的设备。改善这些技术依赖于理解和提高关键陶瓷材料的离子电导率。这项研究产生的新知识将产生高性能工程材料的设计规则，并使前所未有的陶瓷用于能量转换，能量存储和化学转换应用。该项目结合了最先进的纳米材料制造方法和先进的电子显微镜表征，在原子水平上解释陶瓷材料的行为。这项研究被整合到一个新的推广和教育活动，使高中学生和教师参与丰富的科学和技术活动，旨在培养不同学生进入科学和工程领域的管道。新的“成像和记录的科学、技术和艺术”（STAIR）外展活动正在使当地低收入地区代表性不足的高中教师和学生在创作艺术的同时学习成像物理和技术。STAIR利用一般知识参与和教育成像硬件（相机，显微镜），物理（光学，颜色，辐射），艺术（摄影，摄像）和技术（虚拟现实，计算机视觉）。该项目资助的材料科学研究生将接受先进纳米材料合成和表征的培训，为他们在制造业中的就业以及清洁能源和半导体的研究和开发做好准备。技术支持：本研究阐明了离子传导陶瓷材料中原子结构，化学成分和氧阴离子电导率之间的联系。二维缺陷（界面）的研究模型多层薄膜和双晶合成的国家的最先进的纳米纤维技术的基础上脉冲激光沉积。这种界面是各种工程材料的电气和电化学性能的关键，而不仅仅是电瓷。使用先进的透射电子显微镜（TEM）成像和光谱技术，能够直接成像和识别原子，和模拟阴离子扩散的实验相结合，回答周围的界面附近的移动的离子的行为的基本问题。该研究旨在推进离子导电陶瓷导电性的基础理论，揭示界面间物质传输的原子级机制，并最终解释如何最好地设计材料以获得最佳电气性能。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

A Review of Grain Boundary and Heterointerface Characterization in Polycrystalline Oxides by (Scanning) Transmission Electron Microscopy

• DOI: 10.3390/cryst11080878
• 发表时间: 2021-07
• 期刊: Crystals
• 影响因子: 2.7
• 作者: H. Vahidi;Komal Syed;Huiming Guo;Xin Wang;Jenna L. Wardini;Jenny Martinez;W. J. Bowman

Growth of nanoporous high-entropy oxide thin films by pulsed laser deposition

• DOI: 10.1557/s43578-021-00473-2
• 发表时间: 2022-01
• 期刊: Journal of Materials Research
• 影响因子: 2.7
• 作者: H. Guo;Xin Wang;A. Dupuy;J. Schoenung;W. Bowman

Designing nanostructure exsolution-self-assembly in a complex concentrated oxide

• DOI: 10.1016/j.matt.2023.12.012
• 发表时间: 2024-03-06
• 期刊: MATTER
• 影响因子: 18.9
• 作者: Guo，Huiming;Mead，Christopher;Bowman，William J.
• 通讯作者: Bowman，William J.

A Correlated STEM/APT Study of Multidimensional and Interconnected Multi-element Nanostructures Derived from a Complex Concentrated Oxide

复杂浓缩氧化物衍生的多维和互连多元素纳米结构的相关 STEM/APT 研究

• DOI: 10.1093/micmic/ozad067.948
• 发表时间: 2023
• 期刊: Microscopy and Microanalysis
• 影响因子: 2.8
• 作者: Guo, Huiming;Mead, Christopher;Balingit, Marquez;Shah, Soham;Wang, Xin;Xu, Mingjie;Tran, Ich;Aoki, Toshihiro;Samaniego, Jack D;Abdul-Aziz, Kandis Leslie
• 通讯作者: Abdul-Aziz, Kandis Leslie

35+1 challenges in materials science being tackled by PIs under 35(ish) in 2023

35 1 2023 年 35 岁以下 PI 将解决材料科学领域的挑战

• DOI: 10.1016/j.matt.2023.06.046
• 发表时间: 2023
• 期刊: Matter
• 影响因子: 18.9
• 作者: Allen, Monica;Bediako, Kwabena;Bowman, William J.;Calabrese, Michelle;Caretta, Lucas;Cersonsky, Rose K.;Chen, Wen;Correa, Santiago;Davidson, Rachel;Dresselhaus-Marais, Leora
• 通讯作者: Dresselhaus-Marais, Leora