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Reference Number EP/P026818/1
Title Energy Storage Electrode Manufacturing (ELEMENT)
Status Completed
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) 50%;
ENGINEERING AND TECHNOLOGY (Mechanical, Aeronautical and Manufacturing Engineering) 50%;
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Dr C Low
No email address given
Warwick Manufacturing Group
University of Warwick
Award Type Standard
Funding Source EPSRC
Start Date 01 July 2017
End Date 31 December 2018
Duration 18 months
Total Grant Value £100,791
Industrial Sectors Energy; Manufacturing
Region West Midlands
Programme Manufacturing : Manufacturing, NC : Physical Sciences
Investigators Principal Investigator Dr C Low , Warwick Manufacturing Group, University of Warwick (100.000%)
  Industrial Collaborator Project Contact , DZP Technologies Limited (0.000%)
Project Contact , High Value Manufacturing (HVM) Catapult (0.000%)
Project Contact , LVH Coatings Ltd (0.000%)
Project Contact , Institute of Materials Finishing (IMF) (0.000%)
Web Site
Abstract This EPSRC First Grant project will concentrate on the use of so-called 'Electrophoretic Deposition (EPD)' to manufacture energy storage electrodes with spatially distributed properties; in order to further advance the performance of electrochemical power devices. The research is aimed at realising a full capacity utilisation while meeting all relevant power extractions. This will be achieved by developing new electrode designs, manufacture them at a meaningful scale, microstructural characterisation and energy storage measurement. Electrodes built in this way will have their energy storage functions met more rationally than conventional monolithic design. Whilst in-depth investigation of materials chemistry is beyond the scope of this manufacturing centred project, the research will perform exemplary experiments involving Nb2O5 and C, in Li-ion battery context. The improved electrodes will be designed, manufactured and validated in the UK's first full battery prototyping lines in a non-commercial environment at the WMG Energy Innovation Centre.Specifically, this project directly challenges the existing manufacturing paradigm in which electrode designs are driven by outdated manufacturing considerations, such as the casting and calendaring of powder-based viscous slurry. The existing technologies, which are clearly scalable and robust, dominate today's electrode manufacturing for batteries and supercapacitors devices. But, the manufacturing approach greatly limit the 'usable' energy density (Wh/kg) and 'usable' capacity (Ah) at device cell level and creates an undesirable viscous circle. This is because calendaring powder-based electrodes for high fraction of active materials results in pore networks with high tortuosity, filled with undesirable quantity of inactive materials such as polymeric binders and electrical conductivity enhancer carbon black particles. In this context, the electrodes must then be thin for high rate. But, thin electrodes result in high fraction of inactive materials; which consequently lowers the maximum achievable 'usable' energy density and 'usable' capacity. A real-world need therefore persists to expand our knowledge about realising high density active material electrodes, whilst having low pore tortuosity and of adequate electrical conductivity, but is less affected by the demanding manufacturing requirements and engineering constraints.The proposed EPD approach is sufficiently generic that it can be applied for any energy storage materials and their chemistries, and the developed tools, processes and methodologies are common across scale can be of direct relevance for systematic optimisation of any existing Li-ion batteries, beyond Li-ion chemistries (e.g., Na-ion, Mg-ion) and higher energy density electrochemical capacitors (based on metal oxides). In short, this project will explore a new direction: the scientific challenges and technological opportunities enabled by the design of 'high density active material electrodes of spatially distributed properties' through modern approaches in electrochemical manufacturing. The project outcomes are expected to impact scientific understandings of how charged materials and electric field interact, and will create improved electrode designs for future energy storage
Publications (none)
Final Report (none)
Added to Database 14/08/17