Developing Electrochemical Structure-Function Relationships in Non-aqueous Electrolytes

开发非水电解质中的电化学结构-功能关系

• 批准号: EP/K002236/1
• 负责人: Christopher Lucas
• 金额: $ 7.62万
• 依托单位: University of Liverpool
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2012
• 资助国家: 英国
• 起止时间: 2012 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FK002236%2F1
• 关键词: Developing; Electrochemical; Structure; Function; Relationships

Discovering the fundamental principles that govern electrochemical reactivity is the key to the design of new materials for a range of scientific applications. Such information can only be obtained from model systems with well-defined elemental reaction sites using state-of-the-art instrumental probes. In this collaborative project we aim to extend the study of electrochemical reactions on model single crystal surfaces in non-aqueous electrolytes. Electrochemistry underpins many current energy applications and plays a crucial role in the development of new energy storage technologies. Advances in all the fields involved in electrochemically based energy technologies will be facilitated by strong synergies between scientific understanding and technological innovation and development. Advances in modern electrochemical surface science offer strong perspectives towards achieving these aims and are central to this application. Indeed detailed in situ characterisation of complex, reactive interfaces is a key area where the tools of electrochemical surface science can meet the challenges of developing technologies. This is particularly true in the case of the lithium-oxygen battery. A greater fundamental understanding of the oxygen cathode interface with respect to the oxygen reduction and oxygen evolution reactions is critical for significant advancement in this area. Electrochemical processes occur at heterogeneous interfaces within a condensed matter environment and are thus more difficult to examine than gas-solid interfaces. Due to the buried nature of the interface, it is inaccessible to most standard surface science techniques that employ strongly adsorbed electron probes to gain surface sensitivity. Study of the interface is restricted to techniques that employ penetrating radiation, such as x-ray and neutron scattering and optical spectroscopy, or imaging techniques, where the probe is brought in close proximity to the solid surface. Development of these relatively new techniques is providing the main methodological driving force for new investigations of the solid/liquid interface. This has been paralleled by the advancements made in synchrotron radiation, where a third generation of light sources is currently operational around the world. This proposal aims to strengthen the collaboration between scientists at the University of Liverpool and Argonne National Laboratory in the study of this complex interface. The collaboration will involve the sharing of equipment, materials and expertise and the training of PhD students in the use of state-of-the-art experimental equipment. It will also involve the use and development of synchrotron radiation techniques for probing the atomic structure at the interface between a solid electrode and a non-aqueous electrolyte.

发现控制电化学反应性的基本原理是为一系列科学应用设计新材料的关键。这些信息只能使用最先进的仪器探针从具有明确元素反应位点的模型系统中获得。在这个合作项目中，我们的目标是扩展非水电解质中模型单晶表面电化学反应的研究。 电化学支撑着当前许多能源应用，并在新能源存储技术的开发中发挥着至关重要的作用。科学认识与技术创新和发展之间的强大协同作用将促进电化学能源技术所涉及的所有领域的进步。现代电化学表面科学的进步为实现这些目标提供了强有力的前景，并且是该应用的核心。事实上，复杂反应界面的详细原位表征是电化学表面科学工具可以应对技术开发挑战的关键领域。对于锂氧电池来说尤其如此。对氧阴极界面与氧还原和氧析出反应的更深入的了解对于该领域的重大进展至关重要。电化学过程发生在凝聚态环境内的异质界面上，因此比气固界面更难以检查。由于界面的隐藏性质，大多数采用强吸附电子探针来获得表面灵敏度的标准表面科学技术都无法访问它。界面的研究仅限于使用穿透辐射的技术，例如 X 射线和中子散射以及光谱学或成像技术，其中探针靠近固体表面。这些相对较新的技术的发展为固/液界面的新研究提供了主要的方法论驱动力。与此同时，同步加速器辐射也取得了进步，第三代光源目前在世界各地投入使用。该提案旨在加强利物浦大学和阿贡国家实验室科学家在这一复杂界面研究方面的合作。此次合作将涉及设备、材料和专业知识的共享，以及对博士生使用最先进实验设备的培训。它还将涉及同步加速器辐射技术的使用和开发，用于探测固体电极和非水电解质之间界面的原子结构。

项目成果

Adsorption, surface relaxation and electrolyte structure at Pt(111) electrodes in non-aqueous and aqueous acetonitrile electrolytes.

非水和水性乙腈电解质中 Pt(111) 电极的吸附、表面弛豫和电解质结构。

• DOI: http://dx.10.1039/c9cp00499h
• 发表时间: 2019
• 期刊: PCCP
• 作者: Harlow GS