Borohydrides as Reducing Agents in the Synthesis of Inorganic Materials
硼氢化物作为无机材料合成中的还原剂
基本信息
- 批准号:9401999
- 负责人:
- 金额:$ 21万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:1994
- 资助国家:美国
- 起止时间:1994-07-15 至 1998-06-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Manthiram This proposal addresses the use of borohydrides as reducing agents in aqueous solutions to obtain reduced transition metal oxides and ceramic-metal and metal-metal nanocomposites at ambient temperatures. It is proposed to synthesize several novel reduced oxides of tungsten and molybdenum and vanadium by a careful control of experimental conditions such as pH, concentration and nature of the reactants, and aerobic vs anaerobic environment. The borohydride reducing agents will also be used to synthesize at ambient temperatures ceramic-metal and metal-metal nanocomposites that exhibit interesting magnetic characteristics. The products will be characterized by X-ray diffraction, thermal analysis, chemical analysis, spectroscopic techniques, electron microscopy, electrical transport, and magnetic measurements. The observed properties will be correlated with crystal chemistry, chemical composition and microstructure. A thorough characterization of the products formed will provide an understanding of the chemistry involved in the borohydride reduction-reaction process. Such an understanding might provide important insights in exploiting borohydrides for the synthesis of new inorganic materials. In general, the proposed studies are of interest because of their technological applications such as in magnetic recording. The proposed exploratory research may lead to a kinetic accessibility of new phases that may otherwise be unstable at higher temperatures. %%% Inorganic solids are generally synthesized by reaction between the components at high temperatures to overcome the diffusional limitations. Such harsh reaction conditions not only result in products with larger particle size and inhomogeneity, but also lead to an inaccessibility of metastable phases and unusual valence states. This proposal addresses the use of borohydrides as reducing agents in aqueous solutions to obtain several novel reduced transition metal oxides and ceramic-metal and metal-metal nano composites at ambient temperatures. In general, the proposed studies are of interest because of their technological applications such as in magnetic recording. The proposed exploratory research may lead to a kinetic accessibility of new phases that may otherwise be unstable at higher temperatures.
该提案涉及在水溶液中使用硼氢化物作为还原剂,以在环境温度下获得还原的过渡金属氧化物以及陶瓷-金属和金属-金属纳米复合材料。提出了通过仔细控制实验条件如pH、反应物的浓度和性质以及有氧与厌氧环境来合成几种新型的钨、钼和钒的还原氧化物。硼氢化物还原剂也将用于在环境温度下合成陶瓷-金属和金属-金属纳米复合材料,这些纳米复合材料表现出令人感兴趣的磁特性。这些产品将通过X射线衍射、热分析、化学分析、光谱技术、电子显微镜、电输运和磁性测量来表征。所观察到的性质将与晶体化学、化学组成和微观结构相关。对所形成的产物的彻底表征将提供对硼氢化物还原反应过程中所涉及的化学的理解。这种认识可能为开发硼氢化物合成新的无机材料提供重要的见解。一般来说,拟议的研究是感兴趣的,因为它们的技术应用,如在磁记录。拟议的探索性研究可能会导致新的阶段,否则可能是不稳定的,在较高的温度下的动力学可及性。 无机固体通常通过组分之间在高温下的反应来合成,以克服扩散限制。这种苛刻的反应条件不仅导致产物具有较大的颗粒尺寸和不均匀性,而且还导致亚稳相和不寻常的价态的不可达性。该提案提出了在水溶液中使用硼氢化物作为还原剂,以在环境温度下获得几种新型的还原过渡金属氧化物和陶瓷-金属和金属-金属纳米复合材料。 一般来说,拟议的研究是感兴趣的,因为它们的技术应用,如在磁记录。拟议的探索性研究可能会导致新的阶段,否则可能是不稳定的,在较高的温度下的动力学可及性。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Arumugam Manthiram其他文献
Synthesis and characterization of Casub3-x/subLasubx/subCosub4-y/subCusuby/subOsub9+δ/sub cathodes for intermediate temperature solid oxide fuel cells
- DOI:
10.1016/j.ceramint.2021.09.121 - 发表时间:
2022-01-01 - 期刊:
- 影响因子:5.600
- 作者:
K.P. Padmasree;Ke-Yu Lai;Arumugam Manthiram - 通讯作者:
Arumugam Manthiram
A reflection on lithium-ion battery cathode chemistry
关于锂离子电池阴极化学的思考
- DOI:
10.1038/s41467-020-15355-0 - 发表时间:
2020-03-25 - 期刊:
- 影响因子:15.700
- 作者:
Arumugam Manthiram - 通讯作者:
Arumugam Manthiram
Equations and electrochemical methods for measuring the interfacial charge-transfer kinetics of Li-ion battery active materials at high current densities
用于测量高电流密度下锂离子电池活性材料界面电荷转移动力学的方程和电化学方法
- DOI:
10.1016/j.electacta.2025.145875 - 发表时间:
2025-04-20 - 期刊:
- 影响因子:5.600
- 作者:
Kevin Scanlan;Arumugam Manthiram - 通讯作者:
Arumugam Manthiram
Pathways for practical high-energy long-cycling lithium metal batteries
实用高能长循环锂金属电池的途径
- DOI:
10.1038/s41560-019-0338-x - 发表时间:
2019-02-25 - 期刊:
- 影响因子:60.100
- 作者:
Jun Liu;Zhenan Bao;Yi Cui;Eric J. Dufek;John B. Goodenough;Peter Khalifah;Qiuyan Li;Bor Yann Liaw;Ping Liu;Arumugam Manthiram;Y. Shirley Meng;Venkat R. Subramanian;Michael F. Toney;Vilayanur V. Viswanathan;M. Stanley Whittingham;Jie Xiao;Wu Xu;Jihui Yang;Xiao-Qing Yang;Ji-Guang Zhang - 通讯作者:
Ji-Guang Zhang
Cobalt oxide-coated N- and B-doped graphene hollow spheres as bifunctional electrocatalysts for oxygen reduction and oxygen evolution reactions
氧化钴涂层 N 和 B 掺杂石墨烯空心球作为氧还原和析氧反应的双功能电催化剂
- DOI:
10.1039/c6ta01349j - 发表时间:
2016-04 - 期刊:
- 影响因子:11.9
- 作者:
Zhongqing Jiang;Zhong-Jie Jiang;Th;avarayan Maiyalagan;Arumugam Manthiram - 通讯作者:
Arumugam Manthiram
Arumugam Manthiram的其他文献
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{{ truncateString('Arumugam Manthiram', 18)}}的其他基金
Understanding the Structural Transformations of Aluminum Foil Anodes during Electrochemical De(alloying) for Sustainable Lithium-ion Batteries
了解可持续锂离子电池电化学脱(合金)过程中铝箔阳极的结构转变
- 批准号:
2321486 - 财政年份:2023
- 资助金额:
$ 21万 - 项目类别:
Standard Grant
In-Situ Formation of Ternary Sulfide-rich Interphases for Stabilizing Lithium Deposition in Lithium-sulfur Batteries
原位形成富含三元硫化物的界面相以稳定锂硫电池中的锂沉积
- 批准号:
2011415 - 财政年份:2020
- 资助金额:
$ 21万 - 项目类别:
Standard Grant
MRI: Acquisition of a Nanofabrication and Electron Microscopy System for Materials Research
MRI:采购用于材料研究的纳米加工和电子显微镜系统
- 批准号:
1827608 - 财政年份:2018
- 资助金额:
$ 21万 - 项目类别:
Standard Grant
Microwave-Assisted Chemical Insertion for Designing Multivalent-ion Battery Hosts
用于设计多价离子电池主体的微波辅助化学插入
- 批准号:
1709081 - 财政年份:2017
- 资助金额:
$ 21万 - 项目类别:
Continuing Grant
MIRT: Exploring Unusual Properties of Transition Metal Oxides
MIRT:探索过渡金属氧化物的不寻常性质
- 批准号:
1122603 - 财政年份:2011
- 资助金额:
$ 21万 - 项目类别:
Continuing Grant
Nanostructured Palladium-based Alloy Catalysts for Fuel Cells
用于燃料电池的纳米结构钯基合金催化剂
- 批准号:
0651929 - 财政年份:2007
- 资助金额:
$ 21万 - 项目类别:
Standard Grant
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