Exploration of Electronic and Catalytic Behavior in Epitaxial Complex Oxide Films and Nanocomposites

外延复合氧化物薄膜和纳米复合材料中电子和催化行为的探索

基本信息

  • 批准号:
    1809847
  • 负责人:
  • 金额:
    $ 53.2万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2018
  • 资助国家:
    美国
  • 起止时间:
    2018-07-01 至 2022-06-30
  • 项目状态:
    已结题

项目摘要

Non-Technical Abstract:Thin films of metal oxides have long been studied for their various unique physical properties. It is only in the past few years, however, that research exploring oxide thin films for practical applications has emerged. Many of these materials exhibit excellent chemical performance, rivaling that of expensive precious metals such as platinum and iridium. This is particularly true for reactions that are relevant to fuel cells: the oxygen evolution and oxygen reduction reactions, which are both necessary for fuel cell technology. Various oxides have been shown to perform well in one reaction or the other, but few, if any, individual materials match the performance of platinum in both reactions. This project focuses on the synthesis of a composite material that combines two distinct types of oxides into a single surface so that their combined behavior can lead to catalytic performance that matches or exceeds precious metals. The research is integrated with outreach activities to encourage middle and high school students to pursue careers in science, math, and technology through participation in the Auburn University Summer Science Institute and Destination STEM. Through these programs, the PIs will perform demonstrations and lead group activities for students in rural and underserved areas of Alabama to broaden their exposure to science. Technical Abstract:Complex oxide thin films have been studied for many years for their wide array of properties, including ferromagnetism, ferroelectricity, and superconductivity. The development of metal oxide materials for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) electrocatalysis is directly relevant to fuel cell technologies. In this project the investigators perform systematic synthetic studies of transition metal oxides using molecular beam epitaxy to generate epitaxial matrix-pillar nanocomposite thin films where the perovskite oxide matrix phase is a strong OER catalyst and the spinel oxide pillar phase targets ORR. The work is delineated into three tasks: synthesis of perovskite and spinel powders, epitaxial thin films, and nanocomposites; spectroscopic and electrochemical characterization of electronic structure and band alignment, including ambient-pressure x-ray photoelectron spectroscopy studies; and preliminary electrocatalytic studies of uniform thin films and nanocomposites. These studies address fundamental materials chemistry and surface science questions as they relate to improving the performance and economic viability of transition metal oxide hybrid bifunctional materials. The project also provides educational experiences for undergraduate students to learn about materials characterization and for graduate students to perform state-of-the-art experiments at national user facilities.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.
非技术摘要:金属氧化物薄膜因其各种独特的物理性质而长期被研究。然而,只是在过去的几年里,才出现了探索氧化物薄膜实际应用的研究。这些材料中的许多表现出优异的化学性能,可与昂贵的贵金属如铂和铱相媲美。这对于与燃料电池相关的反应尤其如此:析氧反应和氧还原反应,这两者都是燃料电池技术所必需的。各种氧化物已被证明在一种反应或另一种反应中表现良好,但很少(如果有的话)个别材料在两种反应中与铂的性能相匹配。该项目的重点是合成一种复合材料,将两种不同类型的氧化物结合到一个表面上,使它们的组合行为能够产生与贵金属相匹配或超过贵金属的催化性能。该研究与推广活动相结合,鼓励初中和高中学生通过参加奥本大学夏季科学研究所和目的地STEM来追求科学,数学和技术方面的职业。通过这些项目,PI将为亚拉巴马农村和服务不足地区的学生进行示范和领导小组活动,以扩大他们对科学的接触。技术摘要:复合氧化物薄膜由于其广泛的性质,包括铁磁性、铁电性和超导性,已经被研究了很多年。用于析氧反应(OER)和氧还原反应(ORR)电催化的金属氧化物材料的开发与燃料电池技术直接相关。在该项目中,研究人员使用分子束外延对过渡金属氧化物进行系统的合成研究,以生成外延基质-支柱纳米复合薄膜,其中钙钛矿氧化物基质相是强OER催化剂,尖晶石氧化物支柱相以ORR为目标。这项工作被划分为三个任务:钙钛矿和尖晶石粉末,外延薄膜和纳米复合材料的合成;电子结构和能带排列的光谱和电化学表征,包括环境压力X射线光电子能谱研究;和均匀薄膜和纳米复合材料的初步电催化研究。这些研究解决了基本的材料化学和表面科学问题,因为它们涉及到改善过渡金属氧化物混合双功能材料的性能和经济可行性。该项目还为本科生提供了学习材料表征的教育经验,并为研究生提供了在国家用户设施中进行最先进实验的教育经验。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审查标准进行评估,被认为值得支持。

项目成果

期刊论文数量(12)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Lithium Dependent Electrochemistry of p‐Type Nanocrystalline CuCrO 2 Films
p型纳米晶CuCrO 2 薄膜的锂依赖性电化学
  • DOI:
    10.1002/celc.202200825
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    4
  • 作者:
    Chown, Amanda L.;Yeasmin, Humaira;Paudel, Rajendra;Comes, Ryan B.;Farnum, Byron H.
  • 通讯作者:
    Farnum, Byron H.
Incorporation of Ti in epitaxial Fe 2 TiO 4 thin films
Ti 在外延 Fe 2 TiO 4 薄膜中的掺入
  • DOI:
    10.1088/1361-648x/ac0571
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Kaspar, Tiffany C;Spurgeon, Steven R;Matthews, Bethany E;Bowden, Mark E;Heald, Steve M;Wang, Le;Kelley, Ron;Paudel, Rajendra;Isaacs-Smith, Tamara;Comes, Ryan B
  • 通讯作者:
    Comes, Ryan B
Jahn–Teller-driven phase segregation in MnxCo3−xO4 spinel thin films
  • DOI:
    10.1116/6.0002329
  • 发表时间:
    2022-10
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Miles D. Blanchet;B. Matthews;S. Spurgeon;S. Heald;T. Isaacs-smith;R. Comes
  • 通讯作者:
    Miles D. Blanchet;B. Matthews;S. Spurgeon;S. Heald;T. Isaacs-smith;R. Comes
Co2Fe(Ti0.5Al0.5) epitaxial thin films: Structural and magnetic properties of a Heusler alloy with Z-site transition metal substitution
Co2Fe(Ti0.5Al0.5) 外延薄膜:Z 位过渡金属取代的 Heusler 合金的结构和磁性
  • DOI:
    10.1016/j.jmmm.2023.170946
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    2.7
  • 作者:
    Budhathoki, Sujan;Rai, Anish;Law, Ka Ming;Nahar, Ridwan;Stewart, Andrew;Ranjit, Smriti;K.C., Shambhu;Isaacs-Smith, Tamara;Bikmukhametov, Ilias;Comes, Ryan B.
  • 通讯作者:
    Comes, Ryan B.
Electrochemical Impedance Spectroscopy of Metal Oxide Electrodes for Energy Applications
  • DOI:
    10.1021/acsaem.9b01965
  • 发表时间:
    2020-01-01
  • 期刊:
  • 影响因子:
    6.4
  • 作者:
    Bredar, Alexandria R. C.;Chown, Amanda L.;Farnum, Byron H.
  • 通讯作者:
    Farnum, Byron H.
{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Ryan Comes其他文献

Enhanced carrier densities in two-dimensional electron gas formed at BaSnO3/SrTaO3 and SrSnO3/SrTaO3 interfaces
BaSnO3/SrTaO3 和 SrSnO3/SrTaO3 界面处形成的二维电子气中的载流子密度增强
  • DOI:
    10.1088/1361-648x/ad17f8
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Sharad Mahatara;Ryan Comes;Boris Kiefer
  • 通讯作者:
    Boris Kiefer

Ryan Comes的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Ryan Comes', 18)}}的其他基金

CAREER: Topological Phenomena in 4d and 5d Complex Oxide Interfaces and Superlattices Grown by Hybrid Molecular Beam Epitaxy
职业:混合分子束外延生长的 4d 和 5d 复合氧化物界面和超晶格中的拓扑现象
  • 批准号:
    2045993
  • 财政年份:
    2021
  • 资助金额:
    $ 53.2万
  • 项目类别:
    Continuing Grant
MRI: Acquisition of a X-Ray Diffraction System for Materials Research in Alabama
MRI:在阿拉巴马州购买用于材料研究的 X 射线衍射系统
  • 批准号:
    2018794
  • 财政年份:
    2020
  • 资助金额:
    $ 53.2万
  • 项目类别:
    Standard Grant

相似海外基金

CAREER: Single-Atom Alloy Catalyst Design for the Electrocatalytic Reduction of Nitrate to Ammonia: Linking Electronic Structure to Geometry and Catalytic Performance
职业:用于硝酸盐电催化还原为氨的单原子合金催化剂设计:将电子结构与几何结构和催化性能联系起来
  • 批准号:
    2236138
  • 财政年份:
    2023
  • 资助金额:
    $ 53.2万
  • 项目类别:
    Continuing Grant
RII Track 4: Electronic Structure Calculations to Characterize Mechanisms of Regioselective Additions to Olefins and to Advance P-31 NMR as a Reporter of Catalytic Intermediates
RII 轨道 4:电子结构计算,用于表征烯烃区域选择性加成的机制,并推进 P-31 NMR 作为催化中间体的报告基因
  • 批准号:
    1738708
  • 财政年份:
    2017
  • 资助金额:
    $ 53.2万
  • 项目类别:
    Standard Grant
Development of efficient catalytic system via the formation of pai-electronic activated crystalline host
通过形成Pai电子激活晶体主体开发高效催化系统
  • 批准号:
    17K19185
  • 财政年份:
    2017
  • 资助金额:
    $ 53.2万
  • 项目类别:
    Grant-in-Aid for Challenging Research (Exploratory)
Size dependent electronic, structural and catalytic properties of nanostructured supported metal oxide clusters
纳米结构负载金属氧化物簇的尺寸依赖性电子、结构和催化特性
  • 批准号:
    395619289
  • 财政年份:
    2017
  • 资助金额:
    $ 53.2万
  • 项目类别:
    Research Grants
Electronic structure simulation towards magnetic property predictions for metalloenzymic and catalytic molecules
金属酶和催化分子磁性预测的电子结构模拟
  • 批准号:
    16H04101
  • 财政年份:
    2016
  • 资助金额:
    $ 53.2万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Electronic Structural Control and Application of Metal Nanoparticles to the Catalytic Reactions Using Nitrogen-doped Carbon Nanofibers as a Support
金属纳米粒子的电子结构控制及其在氮掺杂碳纳米纤维支撑催化反应中的应用
  • 批准号:
    26390031
  • 财政年份:
    2014
  • 资助金额:
    $ 53.2万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Exploring the catalytic and electronic potential of DNA and RNA
探索 DNA 和 RNA 的催化和电子潜力
  • 批准号:
    105785-2011
  • 财政年份:
    2011
  • 资助金额:
    $ 53.2万
  • 项目类别:
    Discovery Grants Program - Individual
Synthesis, electronic structure, and catalytic activity of the first soluble gold phthalocyanine
第一个可溶性酞菁金的合成、电子结构及催化活性
  • 批准号:
    376210-2009
  • 财政年份:
    2009
  • 资助金额:
    $ 53.2万
  • 项目类别:
    Summer Program in Japan
NIRT: Tuning the Electronic and Molecular Structures of Catalytic Active Sites with Oxide Nanoligands
NIRT:用氧化物纳米配体调整催化活性位点的电子和分子结构
  • 批准号:
    0609018
  • 财政年份:
    2006
  • 资助金额:
    $ 53.2万
  • 项目类别:
    Standard Grant
Inter-American Materials Collaboration (CIAM): Structural and Electronic characteristics of nanoclusters with catalytic properties
美洲材料合作组织 (CIAM):具有催化性能的纳米团簇的结构和电子特性
  • 批准号:
    0502951
  • 财政年份:
    2006
  • 资助金额:
    $ 53.2万
  • 项目类别:
    Standard Grant
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了