Oxide Ion Conduction Mechanisms in Bismuth Perovskites

铋钙钛矿中的氧化物离子传导机制

• 批准号: 1832803
• 负责人: David Cann
• 金额: $ 64万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1832803&HistoricalAwards=false
• 关键词: Oxide; Ion; Conduction; Mechanisms; Bismuth

NON-TECHNICAL DESCRIPTION: Emerging applications in the broad area of energy systems require new materials that have high ionic conductivities, chemical and thermal stability, and are composed of environmentally benign and inexpensive materials. This project is focused on developing an understanding of the relationship between the oxygen conductivity of bismuth-containing ceramics and the local atomic structure that controls the mobility of oxygen. This research will involve the synthesis of a number of ceramic compounds, measurement of their ionic conductivity, and characterization of their local structure using neutrons and X-ray scattering. With improvements in the properties guided by these findings, there are many energy-related applications that can be considered such as intermediate temperature solid oxide fuel cells, which have great potential as a cost-effective, clean power source. The research in this four-year project adds valuable expertise in the development of new energy materials and forms the basis of two doctoral theses, one in chemistry and the other in materials science. In addition, the project incorporates a high-impact K-12 outreach activity by hosting two high school students into the laboratory as part of an existing program, the Summer Experience in Science and Engineering for Youth (SESEY) at Oregon State University (OSU). This project also explores commercialization activities through a professional development program called Lens of the Market (LoM) which is supported at OSU through an National Science Foundation Research Traineeship (NRT) award in Innovations in Graduate Education (IGE).TECHNICAL DETAILS: This project builds upon recent developments on the defect chemistry and structural analysis of bismuth perovskite materials with an aim to develop a fundamental understanding of the dominant ionic conduction mechanisms in two bismuth perovskite systems, sodium bismuth titanate (NBT) and barium titanate-bismuth zinc titanate (BT-BZT). Both of these material systems have recently been shown to exhibit ionic conductivity values comparable to yttria-stabilized zirconia at temperatures below 600 degrees C. The overarching objective of this project is to identify the unique local structural distortions in bismuth perovskites that enable high oxygen conductivities in these materials. The specific research activities include the following objectives: (i) to systematically synthesize and process NBT and BT-BZT-based ceramics to control the level of oxygen stoichiometry, (ii) to characterize the electronic properties of NBT and BT-BZT-based materials, with a focus on the ionic conductivity, and (iii) to characterize the local structure, average structure, and oxygen non-stoichiometry of NBT and BT-BZT-based materials, with the focus on how doping and processing conditions influence this behavior. A greater understanding of the oxide ion conduction mechanisms will help guide the development of new materials for emerging energy applications.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：在能源系统的广泛领域的新兴应用需要具有高离子电导率，化学和热稳定性的新材料，并且由环保和廉价的材料组成。这个项目的重点是发展对含铋陶瓷的氧电导率和控制氧迁移的局部原子结构之间关系的理解。这项研究将涉及许多陶瓷化合物的合成，测量它们的离子电导率，并利用中子和x射线散射表征它们的局部结构。在这些发现的指导下，随着性能的改进，可以考虑许多与能源相关的应用，例如中温固体氧化物燃料电池，它作为一种具有成本效益的清洁能源具有巨大的潜力。这个为期四年的项目的研究为新能源材料的开发增加了宝贵的专业知识，并形成了两篇博士论文的基础，一篇是化学，另一篇是材料科学。此外，作为俄勒冈州立大学（OSU）青年科学与工程暑期体验项目（SESEY）的一部分，该项目通过邀请两名高中生到实验室进行高影响力的K-12外展活动。该项目还通过一个名为“市场视角”（LoM）的专业发展项目探索商业化活动，该项目由俄勒冈州立大学通过研究生教育创新（IGE）国家科学基金会研究培训（NRT）奖提供支持。技术细节：该项目建立在铋钙钛矿材料的缺陷化学和结构分析的最新发展的基础上，旨在发展对两种铋钙钛矿系统，钛酸铋钠（NBT）和钛酸钡-铋锌钛酸钡（BT-BZT）中主要离子传导机制的基本理解。这两种材料系统最近都被证明在低于600摄氏度的温度下表现出与钇稳定的氧化锆相当的离子电导率值。该项目的总体目标是确定铋钙钛矿中独特的局部结构扭曲，从而使这些材料具有高氧电导率。具体的研究活动包括以下目标：(i)系统地合成和加工NBT和bt - bz基陶瓷，以控制氧化学计量水平；（ii）表征NBT和bt - bz基材料的电子性能，重点研究离子电导率；（iii）表征NBT和bt - bz基材料的局部结构、平均结构和氧非化学计量，重点研究掺杂和加工条件对其行为的影响。对氧化物离子传导机制的深入了解将有助于指导新兴能源应用新材料的开发。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Dual-shell silicate and alumina coating for long lasting and high capacity lithium ion batteries

用于持久耐用和高容量锂离子电池的双壳硅酸盐和氧化铝涂层

• DOI: 10.1016/j.jechem.2021.11.014
• 发表时间: 2022
• 期刊: Journal of Energy Chemistry
• 影响因子: 13.1
• 作者: Lucero, Marcos;Holstun, Tucker M.;Yao, Yudong;Faase, Ryan;Wang, Maoyu;N'Diaye, Alpha T.;Cann, David P.;Baio, Joe;Deng, Junjing;Feng, Zhenxing
• 通讯作者: Feng, Zhenxing

Conduction properties of acceptor-doped BaTiO3–Bi(Zn1/2Ti1/2)O3-based ceramics

• DOI: 10.1007/s10853-020-05175-4
• 发表时间: 2020-09
• 期刊: Journal of Materials Science
• 影响因子: 4.5
• 作者: Ryan R. McQuade;P. Mardilovich;Nitish Kumar;D. Cann

From Copper to Basic Copper Carbonate: A Reversible Conversion Cathode in Aqueous Anion Batteries

从铜到碱式碳酸铜：水系阴离子电池中的可逆转换阴极

• DOI: 10.1002/anie.202203837
• 发表时间: 2022
• 期刊: Angewandte Chemie International Edition
• 作者: Gallagher, Trenton C.;Wu, Che‐Yu;Lucero, Marcos;Sandstrom, Sean K.;Hagglund, Lindsey;Jiang, Heng;Stickle, William;Feng, Zhenxing;Ji, Xiulei
• 通讯作者: Ji, Xiulei

The Role of Nonmetallic Ion Substitution in Perovskite LaCoO3 for Improved Oxygen Evolution Reaction Activity

• DOI: 10.1016/j.electacta.2023.143034
• 发表时间: 2023-08
• 期刊: Electrochimica Acta
• 影响因子: 6.6
• 作者: Maoyu Wang;Kingsley C. Chukwu;Brian A. Muhich;W. Samarakoon;Zizhou He;M. Lucero;Chun-Wai Chang

Controlled Synthesis of Perforated Oxide Nanosheets with High Density Nanopores Showing Superior Water Purification Performance

• DOI: 10.1021/acsami.2c01474
• 发表时间: 2022-04-18
• 期刊: ACS APPLIED MATERIALS & INTERFACES
• 影响因子: 9.5
• 作者: Li, Yongtao;Gutierrez Moreno, Jose Julio;Cai, Xingke
• 通讯作者: Cai, Xingke