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，并且由环境良性和廉价的材料组成。该项目的重点是发展对含抗性陶瓷的氧电导率与控制氧气迁移率的局部原子结构之间的关系。这项研究将涉及多种陶瓷化合物的合成，其离子电导率的测量以及使用中子和X射线散射对其局部结构进行表征。随着这些发现指导的性能的改善，可以认为许多与能量相关的应用，例如中等温度固体氧化物燃料电池，它们具有巨大的潜力，它们是具有成本效益的清洁电源。这项为期四年项目的研究增加了在开发新能源材料方面的宝贵专业知识，并构成了两个博士学位论文的基础，一个是化学材料，另一个是材料科学的基础。此外，该项目通过将两名高中学生接待到实验室中，作为现有计划的一部分，即俄勒冈州立大学（OSU）的夏季科学和工程学（SESEY），将两名高中生带入实验室。 该项目还通过一项名为“市场镜头（LOM）的专业发展计划”探索商业化活动，该计划通过国家科学基金会研究培训（NRT）在研究生教育创新（IGE）的创新奖（IGE）中得到支持：技术细节：该项目基于在perovskite internalty of to Bemuth perovskite Internals of te Indental Interal of基金会构成基础上的基础机制的最新发展建立在基础上Bismuth Perovskite系统，二苯甲酸钠（NBT）和钛酸稀释液钛钛酸锌（BT-BZT）。最近，这两个物质系统都显示出在低于600摄氏度的温度下表现出与Yttria稳定的氧化锆的离子电导率值。该项目的总体目标是确定bismuth perovskites中独特的局部结构扭曲，这些局部造成了这些材料中高氧气电导率的唯一局部结构扭曲。 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基于BT-BZT的材料，重点是掺杂和加工条件如何影响这种行为。对氧化离子传导机制的更多了解将有助于指导开发新的能源应用新材料。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的智力优点和更广泛的影响评估标准来评估的。

项目成果

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

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

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

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

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