Enhancing the specific energy of lithium-oxygen batteries by using redox mediators

利用氧化还原介体提高锂氧电池的比能量

• 批准号: EP/M02041X/1
• 负责人: Nuria Garcia-Araez
• 金额: $ 12.56万
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FM02041X%2F1
• 关键词: Enhancing; specific; energy; lithium; oxygen

Lithium-oxygen batteries are a promising alternative to power future electric vehicles because, once fully developed, they could deliver a specific energy (i.e. energy per unit weight) around 10 times higher than modern Li-ion batteries. The incorporation of soluble redox mediators is one of the most promising approaches to develop lithium-oxygen batteries that can reach their full potential. Redox mediators can not only enhance the kinetics of the reactions but also overcome key issues such as electrode passivation, electrolyte degradation and electrode corrosion. This project aims to develop a fundamental understanding of the role of soluble redox mediators in lithium-oxygen batteries that will found the basis for the rational battery development. Enhancement in battery performance will also be sought by exploiting the synergistic effect between the redox mediator in solution and the composition and structure of the solid electrode.

锂氧电池是未来电动汽车动力的一种有前途的替代品，因为一旦完全开发，它们可以提供比现代锂离子电池高出10倍左右的比能量（即每单位重量的能量）。可溶性氧化还原介体的掺入是开发可以充分发挥其潜力的锂氧电池的最有前途的方法之一。氧化还原介体不仅可以提高反应动力学，而且可以克服诸如电极钝化、电解质降解和电极腐蚀等关键问题。该项目旨在对锂氧电池中可溶性氧化还原介体的作用有一个基本的了解，这将为合理的电池开发奠定基础。还将通过利用溶液中的氧化还原介体与固体电极的组成和结构之间的协同效应来寻求电池性能的增强。