Graphitic, porous carbons for catalysts with increased stability in the proton exchange membrane fuel cell
用于提高质子交换膜燃料电池稳定性的催化剂的石墨多孔碳
基本信息
- 批准号:284032131
- 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 2020-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The proton exchange membrane fuel cell (PEMFC) is believed to be of great importance for a successful usage of sustainable energy, because it enables the conversion of sustainably produced hydrogen into electricity. Challenges for this technology are mainly increasing activity and stability of the electrocatalyst. This key component usually consists of a catalyst support based on carbon materials on which the active metal (e.g. platinum) is dispersed. In the last years the activity of these catalysts could be considerably increased by optimizing the structure of the active component, for instance in the form of metal alloys like PtNi. The stability of the catalyst is mainly limited by the carbon support. Employing non-carbon support materials can mitigate some of the disadvantages carbon supports inherit, e.g. the low stability against oxidation. Yet these materials give rise to other drawbacks like a poor electrical conductivity. Recently an extraordinary stability was reported when employing porous hollow graphitic spheres as electrocatalyst support. Reason for the stability is seen in the combination of inner porosity, mesopores with size similar to the dispersed platinum particles and the graphitic structure of the carbon material. In contrast to the typically used carbon black containing outer porosity these novel supports seem to 'trap' the active metal inside the pores. This shows that the stability of carbon supports can be increased to a satisfying level. In this proposal the described findings shall be applied to develop new mesoporous, graphitic carbon supports with inner porosity for stable PEMFC catalysts. The development will base on Carbide Derived Carbons (CDC) that are obtained by the reactive extraction of carbides, while crucial parameters like pore structure and degree of graphitization can be adjusted by the choice of carbide precursor and extraction temperature. The resulting carbon is very pure and the material properties can be obtained with a high reproducibility. Preliminary work showed that mesoporous and graphitic carbons are obtained at extraction temperatures above 1200 °C, which shall be employed within the project to vary the degree of graphitization and pore sizes of CDC based carbon supports. Furthermore a method for the deposition of platinum on these supports shall be developed, which result in homogeneous dispersion of the metal within the pore system. After Subsequently, the platinum clusters will be sintered to the size of the pores to allow for 'trapping'. The resulting catalysts will be tested regarding their activity and stability for the Oxygen Reduction Reaction with half-cell measurements. Further insights will be obtained by characterization of the pristine and used electrocatalysts with IL-TEM. In external cooperation optimized materials resulting will be studied in single stack fuel cell experiments for their long-term stability under realistic conditions.
质子交换膜燃料电池(PEMFC)被认为对于可持续能源的成功利用非常重要,因为它能够将可持续生产的氢气转化为电力。该技术面临的挑战主要是提高电催化剂的活性和稳定性。该关键部件通常由基于碳材料的催化剂载体组成,其上分散有活性金属(例如铂)。在过去的几年中,通过优化活性成分的结构(例如 PtNi 等金属合金的形式),可以显着提高这些催化剂的活性。催化剂的稳定性主要受碳载体的限制。采用非碳支撑材料可以减轻碳支撑所继承的一些缺点,例如抗氧化稳定性低。然而这些材料还存在其他缺点,例如导电性差。最近报道了当使用多孔空心石墨球作为电催化剂载体时具有非凡的稳定性。稳定性的原因在于内部孔隙率、尺寸与分散的铂颗粒相似的中孔以及碳材料的石墨结构的组合。与通常使用的含有外部孔隙的炭黑相比,这些新型载体似乎将活性金属“捕获”在孔隙内。这表明碳载体的稳定性可以提高到令人满意的水平。在该提案中,所描述的发现应应用于开发具有内部孔隙的新型介孔石墨碳载体,以用于稳定的质子交换膜燃料电池催化剂。该开发将基于通过碳化物反应萃取获得的碳化物衍生碳(CDC),而孔结构和石墨化程度等关键参数可以通过选择碳化物前体和萃取温度来调整。所得碳非常纯净,并且可以以高再现性获得材料性能。初步工作表明,在高于 1200 °C 的萃取温度下可以获得介孔碳和石墨碳,该项目将采用该温度来改变基于 CDC 的碳载体的石墨化程度和孔径。此外,应开发一种在这些载体上沉积铂的方法,从而使金属均匀分散在孔隙系统内。随后,铂簇将被烧结至孔径大小以允许“捕获”。将通过半电池测量来测试所得催化剂的氧还原反应活性和稳定性。通过使用 IL-TEM 对原始和使用过的电催化剂进行表征,可以获得进一步的见解。在外部合作中,优化后的材料将在单堆燃料电池实验中研究其在实际条件下的长期稳定性。
项目成果
期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Mesoporous and crystalline carbide-derived carbons: Towards a general correlation on synthesis temperature and precursor structure influence
- DOI:10.1016/j.carbon.2021.01.003
- 发表时间:2021-04
- 期刊:
- 影响因子:10.9
- 作者:Hauke Christians;Kai Brunnengräber;Jan Gläsel;B. Etzold
- 通讯作者:Hauke Christians;Kai Brunnengräber;Jan Gläsel;B. Etzold
{{
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 }}
Professor Dr.-Ing. Bastian Etzold其他文献
Professor Dr.-Ing. Bastian Etzold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('Professor Dr.-Ing. Bastian Etzold', 18)}}的其他基金
Nano textured core-shell carbide-derived carbon particles for electrochemical energy storage and electrocatalysis (COSH-CDC)
用于电化学储能和电催化的纳米结构核壳碳化物衍生碳颗粒(COSH-CDC)
- 批准号:
374564898 - 财政年份:2017
- 资助金额:
-- - 项目类别:
Research Grants
Novel synthesis method and science based tuning of mesoporous graphitic carbons as catalysts for oxidative dehydrogenation of alcohols
介孔石墨碳作为醇氧化脱氢催化剂的新合成方法和基于科学的调整
- 批准号:
323078467 - 财政年份:2017
- 资助金额:
-- - 项目类别:
Research Grants
Combined Material and Process Development for Efficient Adsorption Heat Pumps
高效吸附式热泵的材料和工艺相结合的开发
- 批准号:
266154638 - 财政年份:2014
- 资助金额:
-- - 项目类别:
Research Grants
Strukturierte kohlenstoffbasierte Katalysatorträger für die Hydrierung von CO
用于 CO 加氢的结构化碳基催化剂载体
- 批准号:
198096902 - 财政年份:2012
- 资助金额:
-- - 项目类别:
Research Grants
相似国自然基金
多孔Ti-MSNs@MGF+DX抗炎—成肌体系应用于颞下颌关节假体的作用和机制研究
- 批准号:82370984
- 批准年份:2023
- 资助金额:48.00 万元
- 项目类别:面上项目
LIPUS响应的弹性石墨烯多孔导管促进神经再生及其机制研究
- 批准号:82370933
- 批准年份:2023
- 资助金额:48.00 万元
- 项目类别:面上项目
均匀纳米孔低介电材料的可控制备研究
- 批准号:90606011
- 批准年份:2006
- 资助金额:30.0 万元
- 项目类别:重大研究计划
相似海外基金
Development of porous carbons with multi-functional surfaces by molecular masking method
分子掩蔽法开发多功能表面多孔碳
- 批准号:
23H01691 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Grant-in-Aid for Scientific Research (B)
Electric double-layer produced on porous carbons, charged with extremely high energy density
在多孔碳上产生双电层,具有极高的能量密度
- 批准号:
22H01460 - 财政年份:2022
- 资助金额:
-- - 项目类别:
Grant-in-Aid for Scientific Research (B)
Synthesis of ordered porous carbons from sugar amphiphiles via a template-free hydrothermal approach
通过无模板水热法从糖两亲物合成有序多孔碳
- 批准号:
18K14307 - 财政年份:2018
- 资助金额:
-- - 项目类别:
Grant-in-Aid for Early-Career Scientists
High-performance, low-cost porous carbons from oil sands petroleum coke
来自油砂石油焦的高性能、低成本多孔碳
- 批准号:
462993-2014 - 财政年份:2016
- 资助金额:
-- - 项目类别:
Strategic Projects - Group
Pore structure control of porous carbons produced by innovative template-carbonization method combined with halogen treatment
创新模板碳化法结合卤素处理制备多孔碳的孔结构控制
- 批准号:
15K06438 - 财政年份:2015
- 资助金额:
-- - 项目类别:
Grant-in-Aid for Scientific Research (C)
High-performance, low-cost porous carbons from oil sands petroleum coke
来自油砂石油焦的高性能、低成本多孔碳
- 批准号:
462993-2014 - 财政年份:2015
- 资助金额:
-- - 项目类别:
Strategic Projects - Group
High-performance, low-cost porous carbons from oil sands petroleum coke
来自油砂石油焦的高性能、低成本多孔碳
- 批准号:
462993-2014 - 财政年份:2014
- 资助金额:
-- - 项目类别:
Strategic Projects - Group
Synthesis and application of porous crosslinked polymers and carbons
多孔交联聚合物和碳的合成及应用
- 批准号:
22750203 - 财政年份:2010
- 资助金额:
-- - 项目类别:
Grant-in-Aid for Young Scientists (B)
SYNTHESIS OF NOVEL NANOCARBONS FROM CARBON PRECURSORS PRERARED BY DEFLUORINATION
由脱氟制备的碳前体合成新型纳米碳
- 批准号:
16550166 - 财政年份:2004
- 资助金额:
-- - 项目类别:
Grant-in-Aid for Scientific Research (C)
Development of New Carbons Using Liquid Phase Chemical Treatment and Their Properties
液相化学处理新型碳的开发及其性能
- 批准号:
13650735 - 财政年份:2001
- 资助金额:
-- - 项目类别:
Grant-in-Aid for Scientific Research (C)