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Reference Number EP/Y028163/1
Title SHIELD - Self-Healing Electrode for energy storage Devices
Status Started
Energy Categories Other Power and Storage Technologies (Energy storage) 100%;
Research Types Basic and strategic applied research 100%
Science and Technology Fields PHYSICAL SCIENCES AND MATHEMATICS (Chemistry) 30%;
PHYSICAL SCIENCES AND MATHEMATICS (Metallurgy and Materials) 40%;
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Dr C George

Design Engineering (Dyson School
Imperial College London
Award Type Standard
Funding Source EPSRC
Start Date 01 July 2023
End Date 30 June 2025
Duration 24 months
Total Grant Value £200,512
Industrial Sectors
Region London
Programme UKRI MSCA
Investigators Principal Investigator Dr C George , Design Engineering (Dyson School, Imperial College London (100.000%)
Web Site
Abstract The climate crisis caused by increased carbon emissions is one of the major concerns globally. The exploitation of untapped renewable energy resources (wind, solar power, etc.) is an effective solution for clean energy; however, their intermittent nature remains a challenge. Energy storage devices can efficiently capture and redistribute recurrent energy as per supply and demand. Lithium-ion batteries (LIBs) are mainstream storage devices due to their excellent electrochemical performances. LIBs also find applications in portable electronic devices, power tools, electric vehicles, etc. However, LIBs' limited cycle life, capacity decay, and low availability of lithium resources pose significant challenges. Alternative chemistries like sodium-ion batteries (SIBs) are appealing due to their cost effectiveness (widely available resources). However, they still use hard carbon (< 300 mAh g-1) as anode material, limiting their energy densities. The exploitation of alternative high-capacity anodes (> 800 mAh g-1) is hindered by their huge volume expansion due to the insertion of large size sodium-ions, which on battery cycling, result in crack formation, pulverization, and battery failure. Therefore, this project (SHIELD) aims to develop crack-free electrodes with high-capacity anodes by incorporating self-healing polymers that initiate a self-healing mechanism, mimicking biological wound healing. Unlike conventional electrodes, the self-healing polymer binder mends the cracks during cycling by fully restoring them after rupture via cross-linked hydrogen bonds. The resultant smart and thicker electrodes (for both Na ion batteries) with improved mechanical integrity can deliver long-term cycling performances favouring the wide applicability of battery technologies supporting renewables
Publications (none)
Final Report (none)
Added to Database 02/08/23