ULTIMATE · ULtra-ThIck Multi-mAterial baTtery Electrodes
„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“
- Период
- 2019-04-01 → 2021-03-31
- Финансиране от ЕС
- 224 934 €
- Участници
- 1
- Схема
- MSCA-IF
Линиите свързват координатора с партньорите.
Накратко на български
Свръхдебели електроди за литиево-йонни батерии се разработват чрез нови методи за наслояване на активни материали. Това помага за намаляване на обема на пасивните компоненти и повишаване на енергийната плътност на батериите в електромобилите и електрониката.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
ULtra-ThIck Multi-mAterial baTtery Electrodes
Because of their high energy and power density, Li-ion batteries (LIB) are the most prominent energy storage technology for consumer electronic devices and electrical vehicles. Impressive achievements have been made in the discovery of new active materials to increase the battery energy density and in understanding interface effects to enhance both their performance and lifetime. Battery electrodes typically consist of Cu foils coated with the anode material and Al foils coated with the cathode material, which are spaced apart by a separator soaked in electrolyte. While the Cu, Al, and separator foils are essential for the operation of the battery, they are passive components that do not store energy and are essentially dead volume. The easiest way to decrease their relative fraction is to increase the thickness the active material coating. Unfortunately, thick electrodes are difficult to fabricate. Therefore, only very few groups have been able to substantially improve the areal loading of batteries, and are typically relying on specialized fabrication methods. Here we have prepare scalable ultra-thick battery electrodes with sophisticated structures for good electron and ion transport.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
Over the past decades, significant advances have been achieved in the performance of Li-ion batteries by the development of new active materials and better understanding of energy storage and degradation mechanisms. One aspect of batteries that has received little attention so far, is the form factor of the electrodes. However, simple changes in the battery architecture, such as increasing the coating thickness, allows to drastically decrease the relative fraction of dead volume in the battery (e.g. separators and current collectors). Theoretically, it is possible to replace a stack of ten standard 50 µm thick electrode coatings by one 500 µm thick coating. This would result in up to 30% savings in weight as well as volume of the battery, and would be transformative for both portable electronics and electrical vehicles. However, this is fundamentally challenging because of 1) slow ion diffusion through thick electrodes, 2) high electric resistance through the thickness of the electrode, and 3) cracking and flaking challenges during the fabrication of thick electrodes. This MSCA Fellowship is building on novel gel electrodes developed by the applicant, which can be moulded into 3D geometries that allow to move away from the current flat battery morphology and to address the above challenges with thick battery electrodes. During this Fellowship, the dynamics of ion and electron transport in thick 3D interdigitated electrodes will first be simulated. Then, the electrochemical performance of the gels will be optimised, in particular, a phase separation method to improve Li-diffusion will be optimised. Next, the thermal moulding process will be optimised to create interdigitated electrodes which will be tested in half and full cells. Finally, the proposed fabrication process will be demonstrated on a roll-to-roll coater, which is important to prove its scalability to industrial stakeholders.
Оригинален текст от CORDIS (на английски).
Участници
- THE CHANCELLOR MASTERS AND SCHOLARS OF THE UNIVERSITY OF CAMBRIDGE · CAMBRIDGEКоординаторОбединеното кралство
Връзки
Данни: CORDIS, © Европейски съюз