€7.9M Lithium Sulfur for Safe Road Electrification project launches in Europe in January

The €7.9-million (US$8.9-million), 43-month Lithium Sulfur for
Safe Road Electrification (LISA) project will
launch
1 January 2019 in Europe. The overall goal is to design
and manufacture a lithium-sulfur technology that will enable safe
electrification of EV applications.

The partners involved in the LISA project are LEITAT
(co-ordinators), OXIS Energy Ltd, Cranfield University, Varta Micro
Battery GmbH, CIC Energigune, ARKEMA, Fraunhofer Gesellschaft Zur
Förderung De Angewandten Forschung, Pulsedeon Oy, ACCUREC
Recycling GmbH, Optimat Ltd, Technische Universität Dresden, VDL
Enabling Transport Solutions BV and Renault.

Due to the fact that Li-ion batteries are still the limiting
factor for mass scale adoption of electrified vehicles, there is a
need for new batteries that enable EVs with higher driving range,
higher safety and faster charging at lower cost. Li-Sulfur is a
promising alternative to Li-ion—free of critical raw material
(CRM) and non-limited in capacity and energy by material of
intercalation.

LISA intends to advance the development of high energy and safe
Li-S battery cells with hybrid solid state non-flammable
electrolytes validated at a 20Ah cell level. LISA will solve
specific Li-S technical bottlenecks on metallic lithium protection,
power rate and volumetric energy density—together with cost,
which is the main selection criteria for EV batteries. The
sustainability of the technology will be assessed from an
environmental and economic perspective.

The technology will be delivered ready for use within the
corresponding state of charge estimator facilitating battery pack
integration.

Today, Li-S is twice as light as Li-ion and has reached only 10%
of the sulfur theoretical energy density (2600Wh/kg) at cell
prototype level (250-300Wh/kg), with potentially 800Wh/l (600Wh/kg)
achievable by improving materials, components and
manufacturing.

LISA is strongly oriented to the development of lithium metal
protection and solid state electrolyte and will incorporate process
concepts enabling integration in future manufacturing lines.

Moreover, the outcome of the project in terms of new materials,
components, cells, and processes will be transferable to other
lithium-anode based technologies such as Li-ion and solid state
lithium technologies.

As such, LISA can have a large impact on existing and
next-generation EV batteries, delivering technology with higher
energy density beyond the theoretical capacities of chemistries
using CRM—i.e. natural graphite and cobalt—or silicon-based
chemistries inherently limited by their manufacturability.

This project has received funding from the European Union’s
Horizon 2020 research and innovation program under grant agreement
Nº 814471.

Li-sulfur battery developer Oxis Energy is also
leading
the £7-million Lithium Sulfur Future Automotive
Battery (LiSFAB) project, funded by Innovate UK, to transform
electric vehicle technology for commercial use. It is developing a
next-generation cell and module that is suitable for large electric
vehicles such as trucks and buses and will deliver a 400 Wh/kg Li-S
cell that will have the significantly improved power and cycle life
required by large automotive applications.

This cell will allow buses and trucks to carry considerably more
payload and will cost less because of the abundant cell
construction materials. State of Charge and State of Health (SoC
and SoH) will be improved, along with the manufacturing aspect. The
project will look into four areas with OXIS playing a key part in
all of them.

  • On ‘Cell Performance’ OXIS will work with University College
    London and William Blythe to utilize new materials to improve
    performance and characterise electrodes and cells using X-ray
    tomography and other techniques to accelerate development. This
    aspect of the work will build on past projects that increased cell
    specific energy (Wh/kg), with further improvements being made to
    cycle life, power and cell design to meet the performance and
    safety needs of EVs.

  • In ‘Cell Characterisation’, cells will be tested extensively
    to inform development. Rigorous safety tests, rapid test
    protocols/formation studies, degradation/abuse analysis will be
    carried out.

  • OXIS will also play a key role in ‘Cell Manufacturability’.
    Working with Ceetak, it will develop crucial pouch cell sealing
    technology required to make a robust automotive cell whilst BPE
    will lead the design of a pilot facility for the cells that are
    developed on this project. OXIS will again team up with University
    College London to develop a novel, non-invasive X-Ray quality
    control process for cells.

  • Collaborating with Cranfield University, the ‘Module
    Development’ activity, OXIS will build on the control algorithms
    developed on the Revolutionary Electric Vehicle Battery project in
    order to better estimate SoC and SoH and create intelligent
    charging algorithms to improve lifetime. OXIS along with Williams
    Advanced Engineering will also investigate module construction
    techniques and cell matching in order to establish a final
    module.

Source: FS – Transport 2
€7.9M Lithium Sulfur for Safe Road Electrification project launches in Europe in January



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