FunLAB · Fundamental breakthroughs in Lithium-Air Batteries
7РП — „Хора“ (Действия „Мария Кюри“)
- Период
- 2014-04-25 → 2018-04-24
- Финансиране от ЕС
- 100 000 €
- Участници
- 1
- Схема
- MC-CIG
Линиите свързват координатора с партньорите.
Накратко на български
Литиево-въздушните батерии се изследват чрез използването на редокс медиатори, за да се ускорят химичните реакции и да се спре блокирането на електродите. Това е важно, защото тези батерии могат да съхраняват много повече енергия от сегашните литиево-йонни.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Fundamental breakthroughs in Lithium-Air Batteries
Funlab is a project aimed to achieve fundamental breakthroughs in lithium-air batteries. Lithium-air batteries have the potential to deliver a much higher energy than lithium-ion batteries, but major improvements at the level for the fundamentals of the reactions are required in order to improve their practical specific energy and rechargeability. The focus of the project is on the use of redox mediators to facilitate reaction kinetics as well as mitigating the issue of electrode passivation. A combination of different techniques (including in-situ mass spectrometry) has been applied to elucidate the mechanism of lithium-oxygen and sodium-oxygen batteries and the specific role of redox mediators. The work demonstrates that impressive improvements in performance can be achieved in metal-oxygen batteries, and issues such as electrode passivation or degradation reactions can be overcome by altering the reaction mechanism by using, for example, redox mediators. Even though metal-oxygen batteries are still far away from commercialization, this work, together with all the advances made by the research community, shows that there are strategies that could solve the current fundamental issues that are associated to these batteries. Results of this work have been posted in the following webpage: https://www.southampton.ac.uk/chemistry/about/staff/nga1e12.page
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
Lithium-air batteries are a promising alternative to power the future electric vehicles. However, major improvements at the level of the fundamentals of the reactions will be required in order to improve their practical specific energy and rechargeability. Some of the challenges include: i) the instability of organic electrolytes in the presence of the superoxide radical formed as an intermediate in the reduction of oxygen, and ii) passivation of the electrode surface by the insoluble reaction products (lithium oxide and peroxide) leading to slow reaction kinetics. I plan to address these issues by means of a rational screening of soluble redox catalysts capable of decreasing the lifetime of the superoxide radical by rapidly transferring a second electron to the oxygen molecule. Such soluble redox catalysts will also act as shuttles, displacing the formation of insoluble reaction products from the electrode surface to the electrolyte, thus avoiding electrode passivation. The catalysts will be tested in selected electrolytes with good chemical stability. Redox active electrolytes will also be studied as they can potentially lead to very fast electron transfer reactions. Innovative approaches to avoid electrode passivation will be also investigated, including doping strategies to increase the conductivity of lithium oxides and peroxides and the application of ultrasound to erode the passivating layers on the electrode and enhance mass transport.
Оригинален текст от CORDIS (на английски).
Участници
- UNIVERSITY OF SOUTHAMPTON · SOUTHAMPTONКоординаторОбединеното кралство
Връзки
Данни: CORDIS, © Европейски съюз