Non-precious bifunctional oxygen catalysts for regenerative seawater electrolyzers
用于再生海水电解槽的非贵重双功能氧催化剂
基本信息
- 批准号:315473909
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:2016
- 资助国家:德国
- 起止时间:2015-12-31 至 2018-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The intermittency of ever increasing renewable solar and wind energy capacities drives up demand for more and more suitable molecular energy storage. Hydrogen, made of electricity and water, is regarded the most promising energy storage molecule. Today, water splitting is carried out using fresh water. Much more desirable would be the efficient electrochemical splitting of raw saline sea water. Reversible seawater electrolyzers, i.e. assemblies that split seawater in hydrogen as well as convert the hydrogen in electricity and freshwater, will enable a self-sufficient energy and fresh water supply in seawater near desert regions. For that purpose new suitable bifunctional electrocatalysts for reversible hydrogen- and oxygen-electrodes are required. Such catalysts have not been explored yet. This will be investigated within the framework of this project. The overall goal is the identification and molecular understanding of structure activity relationships of novel non precious bifunctional catalyst for regenerative seawater splitting in reversibly operating membrane-based electrolyzers. To achieve this goal this project will explore the concept of two-component-catalyst systems as a way to generate special active sites at the surface of the hybrid material, where each component will be specialized to either the selective seawater splitting or the conversion of hydrogen in electricity and fresh water. Own prior results have shown that such hybrid materials exhibit outstanding bifunctional activity. Molecular mechanisms and limitations of this materials concept, however, are still unclear. To address this, electrochemical activity and stability investigations will be combined with structural analysis to develop structure-, reactivity- and stability-relationships for reversible catalyst systems. Special Emphasis will be put on enhanced chloride corrosion and molecular degradation. New fundamental materials insights will be verified in a single cell reversible electrolyzer assembly. Thereby, additional new knowledge about the alkaline ionomer-catalyst-reactant three-phase boundary and their stabilities will be generated. The broad analytical method portfolio of this project targeting structure, charge transport, electrocatalytic stability and activity will provide fundamental understanding, yet will also yield a first sense of how such hybrid catalyst perform in more complex electrolytic environments. In all this project is a fundamental contribution to the Materials Science of renewable energy storage.
不断增加的可再生太阳能和风能容量的不确定性推动了对越来越多合适的分子能量存储的需求。由电和水组成的氢被认为是最有前途的储能分子。今天,水分解是使用淡水进行的。更需要的是有效的电化学分解原始盐水。可逆海水电解槽,即将海水分解为氢气并将氢气转化为电力和淡水的组件,将使沙漠地区附近的海水能够实现自给自足的能源和淡水供应。为此,需要用于可逆氢电极和氧电极的新的合适的双功能电催化剂。这种催化剂尚未被探索。将在本项目框架内对此进行调查。总体目标是识别和分子理解的结构活性关系的新型非贵金属双功能催化剂的再生海水分裂可逆操作的膜基电解槽。为了实现这一目标,该项目将探索双组分催化剂系统的概念,作为在混合材料表面产生特殊活性位点的一种方式,其中每个组分将专门用于选择性海水裂解或将氢转化为电力和淡水。已有的结果表明,这种杂化材料表现出突出的双功能活性。然而,这种材料概念的分子机制和局限性仍然不清楚。为了解决这个问题,电化学活性和稳定性研究将与结构分析相结合,以开发可逆催化剂系统的结构,反应性和稳定性关系。将特别强调增强的氯化物腐蚀和分子降解。新的基本材料的见解将在一个单电池可逆电解槽组件验证。由此,将产生关于碱性离聚物-催化剂-反应物三相边界及其稳定性的额外新知识。该项目针对结构,电荷传输,电催化稳定性和活性的广泛分析方法组合将提供基本的理解,但也将产生这种混合催化剂在更复杂的电解环境中如何表现的初步感觉。总之,该项目是对可再生能源储存材料科学的根本性贡献。
项目成果
期刊论文数量(6)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Direct Electrolytic Splitting of Seawater: Activity, Selectivity, Degradation, and Recovery Studied from the Molecular Catalyst Structure to the Electrolyzer Cell Level
- DOI:10.1002/aenm.201800338
- 发表时间:2018-08-06
- 期刊:
- 影响因子:27.8
- 作者:Dresp, Soeren;Dionigi, Fabio;Strasser, Peter
- 通讯作者:Strasser, Peter
Catalyst Particle Density Controls Hydrocarbon Product Selectivity in CO2 Electroreduction on CuOx.
- DOI:10.1002/cssc.201701179
- 发表时间:2017-11
- 期刊:
- 影响因子:8.4
- 作者:Xingli Wang;A. Varela;A. Bergmann;S. Kühl;P. Strasser
- 通讯作者:Xingli Wang;A. Varela;A. Bergmann;S. Kühl;P. Strasser
An efficient bifunctional two-component catalyst for oxygen reduction and oxygen evolution in reversible fuel cells, electrolyzers and rechargeable air electrodes
- DOI:10.1039/c6ee01046f
- 发表时间:2016-01-01
- 期刊:
- 影响因子:32.5
- 作者:Dresp, Soeren;Luo, Fang;Strasser, Peter
- 通讯作者:Strasser, Peter
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Professor Dr. Peter Strasser其他文献
Professor Dr. Peter Strasser的其他文献
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{{ truncateString('Professor Dr. Peter Strasser', 18)}}的其他基金
On the morphological stability of supported Pt nanoparticle ensembles in electrochemical environments
电化学环境中负载型 Pt 纳米粒子集合体的形态稳定性
- 批准号:
256186919 - 财政年份:2014
- 资助金额:
-- - 项目类别:
Research Grants
Nanostructured mixed metal oxides for the electrocatalytic oxidation of water
用于电催化氧化水的纳米结构混合金属氧化物
- 批准号:
221428535 - 财政年份:2012
- 资助金额:
-- - 项目类别:
Priority Programmes
Synthesis and Electrocatalysis of ternary shape-controlled octahedral Pt alloy Nano catalysts for the Oxygen Reduction Reaction
三元形控八面体铂合金纳米催化剂的合成及电催化氧还原反应
- 批准号:
461853506 - 财政年份:
- 资助金额:
-- - 项目类别:
Research Grants
Rechargeable high energy density Aluminum ion-batteries - Fundamental structural material defect engineering and interface control
可充电高能量密度铝离子电池 - 基础结构材料缺陷工程和界面控制
- 批准号:
445927957 - 财政年份:
- 资助金额:
-- - 项目类别:
Research Grants
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