| 项目编号: | 1604008
|
| 项目名称: | Highly Active Nanostructured Electrodes for High Temperature, Degradation-Resistant Solid Oxide Reversible Cells |
| 作者: | Anil Virkar
|
| 承担单位: | University of Utah
|
| 批准年: | 2016
|
| 开始日期: | 2016-06-01
|
| 结束日期: | 2019-05-31
|
| 资助金额: | 302136
|
| 资助来源: | US-NSF
|
| 项目类别: | Standard Grant
|
| 国家: | US
|
| 语种: | 英语
|
| 特色学科分类: | Engineering - Chemical, Bioengineering, Environmental, and Transport Systems
|
| 英文关键词: | electrode
; nanostructured perovskite oxygen electrode
; solid oxide electrochemical cell
; high-temperature solid oxide electrolysis cell
; high electrode overpotential
; electrode delamination
; solid oxide fuel cell
; ionically-conducting particle electrode
; electrode-electrolyte interface
; fuel electrode
|
| 英文摘要: | CBET - 1604008
PI: Virkar, Anil V.
The proposed work deals with the stabilization of oxygen (i.e. air) electrodes for high-temperature solid oxide electrolysis cells (SOECs), which are used primarily for converting water to hydrogen. Such devices could be a key component of a sustainable energy and chemicals future based on wind or solar energy. The project will focus on synthesis of nanoparticle materials that have potential to improve the efficiency and stability of SOECs. The proposed work addresses a fundamental stability problem in solid oxide electrochemical cells that is shared among a number of devices including solid oxide fuels cells operating in the reversible mode and certain batteries. Thus, findings that will come out of the study can potentially benefit energy storage and conversion devices more broadly than SOECs alone.
SOECs typically operate at high electrode overpotentials, which in turn, can result in build up of effective oxygen pressure at the electrode-electrolyte interface, in some cases to the point of bubble formation. The oxygen build-up can lead to internal cracking and electrode delamination. Thi project is based on the proposition that nanostructured electrodes consisting of ionically-conducting particles electrode and electrolyte materials can substantially lower polarization resistance, lower oxygen pressure (and the risk of bubble formation), and thereby suppress degradation. To this end, nanostructured perovskite oxygen electrodes in the range of 10-50 nm will be deposited on electrolyte discs and fuel electrode supported cells by a variety of techniques, and then characterized for polarization resistance using electrochemical impedance spectroscopy. The measured polarization resistance will be used in combination with microstructural analysis and calculations to predict degradation behavior that will be compared with experimental studies. |
| 资源类型: | 项目
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/92270
|
| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
|
|
There are no files associated with this item.
|
| Recommended Citation: | |
Anil Virkar. Highly Active Nanostructured Electrodes for High Temperature, Degradation-Resistant Solid Oxide Reversible Cells. 2016-01-01.
|
|
|