Fundamental developments of lithium-oxygen and lithium-sulphur batteries by using redox mediators

使用氧化还原介体的锂氧和锂硫电池的基础发展

• 批准号: EP/N024303/1
• 负责人: Nuria Garcia-Araez
• 金额: $ 110.67万
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FN024303%2F1
• 关键词: Fundamental; developments; lithium; oxygen; sulphur

Cheap, safe and high-energy batteries are required for applications such as the electrification of transport, the large-scale storage of energy from renewable resources and consumer portable devices. Lithium-oxygen and lithium-sulphur batteries are very promising candidates because they have the potential to store more than 5 times higher energy than today's lithium-ion batteries of the same weight and volume. Currently, the performance of lithium-oxygen and lithium-sulphur batteries is limited by several fundamental challenges. This project will develop an experimental-based physical-chemical understanding of the underlying processes and will develop tailored solutions to overcome these problems. Our approach will be to fundamentally change the reaction mechanism in order to boost battery performance. Homogeneous catalysts capable of transferring several electrons will be explored with the aim of eliminating problematic reaction intermediates. This is expected to not only enhance reaction kinetics but also to suppress degradation reactions. Novel electrolytes will be developed which are designed to provide ultrafast charge transport of the homogeneous catalysts. Novel lithium protection approaches will also be explored, which are designed to suppress unwanted reactions on the lithium electrode as well as enhancing the safety of these batteries.In conclusion, this project aims to achieve a step change in rechargeable lithium batteries based on a full mechanistic understanding and tailored innovative approaches.

运输电气化、大规模存储可再生资源能源和消费便携式设备等应用需要廉价、安全和高能电池。锂氧和锂硫电池是非常有前途的候选者，因为它们的存储能量比当今相同重量和体积的锂离子电池高出 5 倍以上。目前，锂氧和锂硫电池的性能受到几个基本挑战的限制。该项目将对基础过程进行基于实验的物理化学理解，并将开发定制的解决方案来克服这些问题。我们的方法将从根本上改变反应机制，以提高电池性能。将探索能够转移多个电子的均相催化剂，目的是消除有问题的反应中间体。预计这不仅可以增强反应动力学，还可以抑制降解反应。将开发新型电解质，旨在提供均相催化剂的超快电荷传输。还将探索新型锂保护方法，旨在抑制锂电极上不必要的反应并提高这些电池的安全性。总之，该项目旨在基于全面的机理理解和定制的创新方法，实现可充电锂电池的阶跃变化。

项目成果

Synthesis of Vanadium Nitride-Hard Carbon Composites from Cellulose and Their Performance for Sodium-Ion Batteries

• DOI: 10.1021/acsaem.0c00003
• 发表时间: 2020-05-26
• 期刊: ACS APPLIED ENERGY MATERIALS
• 影响因子: 6.4
• 作者: Cheng, Hang;Garcia-Araez, Nuria;Hector, Andrew L.
• 通讯作者: Hector, Andrew L.

Enhancing the performance of hard carbon for sodium-ion batteries by coating with silicon nitride/oxycarbide nanoparticles

• DOI: 10.1039/d1ma00613d
• 发表时间: 2021-10
• 期刊: Materials Advances
• 影响因子: 5
• 作者: Hang Cheng;N. García-Aráez;A. Hector

A Polyacrylonitrile Shutdown Film for Prevention of Thermal Runaway in Lithium-Ion Cells

• DOI: 10.3390/batteries9050282
• 发表时间: 2023-05
• 期刊: Batteries
• 作者: Jonathan Allen;Marcin Mierzwa;D. Kramer;N. García-Aráez;A. Hector

Influence of Ionic Coordination on the Cathode Reaction Mechanisms of Al/S Batteries

• DOI: 10.1021/acs.jpcc.1c08426
• 发表时间: 2022-01-05
• 期刊: JOURNAL OF PHYSICAL CHEMISTRY C
• 影响因子: 3.7
• 作者: Bhowmik, Arghya;Carrasco-Busturia, David;Garcia-Lastra, Juan Maria
• 通讯作者: Garcia-Lastra, Juan Maria

Quantitative Galvanostatic Intermittent Titration Technique for the Analysis of a Model System with Applications in Lithium-Sulfur Batteries

• DOI: 10.1002/celc.201701004
• 发表时间: 2018-02-01
• 期刊: CHEMELECTROCHEM
• 影响因子: 4
• 作者: Dibden, James W.;Meddings, Nina;Garcia-Araez, Nuria
• 通讯作者: Garcia-Araez, Nuria