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Content archived on 2024-04-30

Composite negative electrodes for lithium ion cells

Objective



Objectives
It is the objective of the R&D programme to develop three groups of new materials for negative electrodes for lithium ion batteries and to produce electrode structures and small prototype cells based on these materials. Three groups of materials are : Oxide and sulfide compounds; Alloy systems; Synthetic composite systems.

Technical approach
The negative electrode is based on a concept that is called a composite electrode. The composite is formed by two components: an active component that undergoes a reversible chemical reaction and determines the electrical potential and capacity of the system, and a non active component that serves as a matrix to support the active component and transports the electrochemical reactant. In this type of electrode, the composite will be either formed in situ by an initial chemical reaction or synthetically. The inert matrix will be prepared from a variety of inorganic substances, both amorphous and crystalline, conducting and insulating. The relative percentages of active and inactive components will be varied, as well as the morphology of these two components. The participation of the members of this consortium will aim at understanding the scientific principles underlying such an electrode, determining the limiting factors of such an electrode and preparing an electrode which has better energy and power characteristics than any existing negative electrode used for a lithium ion battery. At the end of the project, prototype lithium ion batteries will be developed using this negative electrode. However, since the positive electrode (cathode) and electrolyte may eventually limit the performance of the cell there can be no guarantee that these prototype batteries will surpass the performance of alternative systems.

Expected achievements and exploitations
- to develop anode materials of a specific reversible capacity of at least 500 mAh/g at potentials less than 1V vs. Li/Li+. Such anode materials should further display a specific irreversible capacity less than 100 mAh/g
and
- to produce prototype cells with a specific energy of 125 Wh/kg using such new materials.

Fields of science (EuroSciVoc)

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Topic(s)

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Funding Scheme

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CSC - Cost-sharing contracts

Coordinator

Danionics A/S
EU contribution
No data
Address
21 J,Hestehaven
5260 Odense
Denmark

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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

No data

Participants (3)

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