4th Call LIBRA Project Publishes New Scientific Article in ACS Applied Materials & Interfaces

, by EIG CONCERT-Japan

EIG-CONCERT Japan is delighted to announce the publication of a scientific article by the LIBRA (Low-Cost and Efficient Sodium-Ion Battery Based on Abundant Elements) team funded under the EIG CONCERT-Japan 4th Joint Call on “Efficient Energy Storage and Distribution.” The article, titled Stable and Unstable Diglyme-Based Electrolytes for Batteries with Sodium or Graphite as Electrode is already available in issue and online on the ACS Applied Materials & Interfaces journal website.


The article, Stable and Unstable Diglyme-Based Electrolytes for Batteries with Sodium or Graphite as Electrode, presents the role of electrolytes in sodium-ion batteries. It was authored by researchers Mustafa Goktas, Christoph Bolli, Johannes Buchheim, Erik J. Berg, Petr Novák, Francisco Bonilla, Teófilo Rojo, Shinichi Komaba, Kei Kubota and Philipp Adelhelm.

About the LIBRA Project

The LIBRA project is supported by EIG CONCERT-Japan and includes the following three partners:

Prof. Teofilo Rojo and team CIC EnergiGUNE, Parque Tecnológico de Álava (Spain)
Prof. Shinichi Komaba and team Tokyo University of Science (Japan)
Prof. Philipp Adelhelm and team Humboldt-University Berlin (Germany)

The goal is to study the behavior of sodium-ion batteries through a joint effort. A particular focus in the project is the application of glyme-based electrolytes which show different properties compared to commonly applied electrolyte solutions.

About ACS Journal

ACS Applied Materials & Interfaces is a peer-reviewed scientific journal established in 2009 by the American Chemical Society. ACS Applied Materials & Interfaces covers advanced active and passive electronic/optical materials, coatings, colloids, biomaterials and bio-interfaces, polymers, hybrid and composite materials, and friction and wear.

This recent scientific publication represents an achievement in the field of energy storage as well as an excellent example of a positive outcome of European-Japanese science, technology and innovation cooperation.

The Role of Electrolytes in Sodium-Ion Batteries

The demand for rechargeable batteries is rapidly growing due to the rising electric vehicle market and the forthcoming need for large scale grid storage. Lead-acid batteries and lithium-ion batteries are most widely used today but these technologies may run into material supply risks on the mid and long-term.

For this reason, there is currently great interest in developing alternative battery technologies that are based on more abundant and low-cost elements. In this context, the potential of sodium-ion batteries (SIBs) becomes attractive.

In the LIBRA project, three partners from Spain (Rojo group at CIC Energigune), Germany (Adelhelm group at Humboldt-University Berlin) and Japan (Komaba group at the Tokyo University of Science) study the behavior of sodium-ion batteries as a part of a collaborative international effort. A particular focus in the project is the application glyme-based electrolytes which show different properties compared to more commonly applied electrolyte solutions. Glyme-based electrolytes work well in combination with sodium and graphite electrodes, though some difficulties have been encountered which necessitates further research in the area.

To understand disparate findings reported in the literature, the teams jointly studied the influence of conductive salt on electrode behavior. Together with a group from Switzerland (Novak group at the Paul-Scherrer Institute), the stability of various electrolyte formulations was studied.

Some of the findings were quite unexpected. While excellent cell stability was obtained for some salts, others showed poor behavior with rapid corrosion and cell gassing. The study provides important hints for future electrolyte optimization and constitutes an inspiring example of how research progress can be achieved through international cooperation.

The original article, titled Stable and Unstable Diglyme-Based Electrolytes for Batteries with Sodium or Graphite as Electrode, is published and available in the journal ACS Applied Materials & Interfaces, 2019, volume 11, issue. 36 (32844-32855).

The scientific article summary was prepared by Mustafa Goktas and Philipp Adelhelm