LIB-Si anode · Silicon/Carbon Nano-Hybrid Lithium-Ion Battery Anode: Green Facile Scalable Synthesis Inspired by Thermosetting Polymers
Horizon 2020 — Marie Skłodowska-Curie Actions
- Duration
- 2015-09-14 → 2017-09-13
- EU contribution
- €195,455
- Participants
- 1
- Scheme
- MSCA-IF-EF-ST
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Results in brief
Silicon/Carbon Nano-Hybrid Lithium-Ion Battery Anode: Green Facile Scalable Synthesis Inspired by Thermosetting Polymers
Si is regarded as one of the most promising next-generation lithium-ion battery anode to replace commercial graphite based anode due to its exceptional theoretical capacity, appropriate voltage profile, and huge abundance. However, it drastic volume expansion causes poor cyclic performance, which has significantly limited its wide applications. It is crucial to develop new concepts and strategies to improve the electrochemical performance including cyclic and rate performance of the silicon based lithium-ion battery anode. Lithium-ion battery is one of the most important energy storage media widely used currently. However, it suffers from serious drawbacks of the graphite based anode including inferior energy capacity and serious safety concern. It is both scientifically and practically important to develop new generation of lithium-ion battery anode with high capacity, energy density, reasonable cost, and good operation safety.Compared to graphite, silicon holds great potential to be the new generation of lithium-ion battery anode. Developing cutting edge technology for high performance silicon based lithium-ion battery anode and understanding the fundamentally scientific principle will significantly advance the practical application of the lithium-ion battery. The overall objectives of the project are to develop facile scalable synthetic strategies to improve the cyclic and/or rate performance of the silicon based lithium-ion battery anode, acquire knowledge and mechanism about the structure control, structure-property correlation of the silicon anode. With the knowledge obtained from this project, it would be beneficial and inspiring for developing high performance silicon anode within this area.
Data: CORDIS, © European Union
Project objective
The last two decades have witnessed a great commercial success of lithium ion battery (LIB) in portable electronic devices and electric vehicles. However, current LIB technology cannot meet the rapid increasing demand from information technology and vehicle industry, primarily due to limited capacity and serious safety concern of graphite anode. Discovering new anode material with high capacity and good reliability has been a central issue. Because of its high theoretical capacity and excellent operation safety, silicon (Si) has attracted considerable attention as a promising anode to replace graphite. Nevertheless, dramatic volumetric change during lithiation/delithiation process causes severe pulverization and disconnection of electrode from current collector, leading to a fast capacity loss. To tackle these critical problems, a new concept to achieve facile, cost effective, green, and scalable synthesis of Si/carbon nanohybrid anode is proposed. By reducing Si particle size to the range below 10 nm and homogeneous embedding of Si nanoparticles into carbon buffer matrix, the volume change and associated stress can be effectively accommodated to improve the cyclability of the LIBs. Instead of conventional aqueous and/or organic solvents, three industrially widely used thermosetting resin monomer systems including vinyl ester resin, epoxy resin, and phenolic-formaldehyde resin are utilized as both solvent and carbon source. Cost effective silane coupling agents bearing appropriate chemical functional groups act as the precursor of Si and cross-linking agents of the thermosetting polymers. Ultra small Si nanoparticles are in situ formed and homogeneously embedded in the in situ formed porous carbon matrix by sequential photo/thermally induced polymerization, calcination in inert atmosphere, Magnesium thermal reduction, and KOH activation. The mechanism of control over morphology, crystallinity, dispersion, and composition of the Si/C nanohybrid anode and correspondin
Original text from CORDIS.
Participants
- THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD · OxfordCoordinatorUnited Kingdom
Links
- View on CORDIS
- DOI: 10.3030/655881
- http://pgbgroup.materials.ox.ac.uk/
- https://arquivo.pt/wayback/20180417180801/http://pgbgroup.materials.ox.ac.uk/
Data: CORDIS, © European Union