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Report

Teaser, summary, work performed and final results

Periodic Reporting for period 2 - BATMAN (Development of Quantitative Metrologies to Guide Lithium Ion Battery Manufacturing)

Teaser

Summary

Lithium ion batteries are gaining traction as the key energy storage solution for electric mobility, the integration of renewables into the energy supply, and global electrification for sustainable growth and economic development. This project aims to develop design guidelines and engineering solutions for achieving higher performance and safer lithium ion batteries. To meet these project aims, the project focuses on developing and implementing quantitative methods to study the complex interrelations between structure of materials and the electrochemistry occurring in lithium ion battery active materials and cells.

Work performed

To date in the project, we have developed new methods to image the structure battery components and watch the structural dynamics of these components from the atomic to macro-scale. This enables us to determine the shortcomings of these components and generate targeted concepts for improving to their performance. We have done this now for battery electrodes, polymer-binders in battery electrodes, and battery separators.

Final results

We have achieved new understanding in how to design: (1) battery electrodes to enable fast charge and prevent lithium plating, (2) the surfaces of battery active materials to potentially reduce voltage losses and electrolyte breakdown, (3) the structure and surface of separators to minimise voltage losses, and (4) the visco-elastic and adhesive properties of binders. These insights will enable the systematic improvement of battery life and performance.