Energy storage is critical to meeting the needs of modern societies, and batteries represent a predominant technology. While Na-oxygen batteries offer much higher energy density than current Metal-ion systems, the selection of suitable electrolytes remains a major hurdle which has yet to be overcome. This project aims to meet this challenge by exploring recently discovered hybrid electrolytes by CIC energiGUNE researchers to generate rational design principles; then from these (using careful selection of constituents; i.e., solvent(s), salt, and additive) develop a new generation of advanced electrolytes (i.e., solid electrolytes). The objective of the project is to establish, for the first time ever, the design principles for the electrolyte requirements for Na-oxygen batteries that improve stability, performance and lifetime, to ultimately achieve a solid-state Na-oxygen battery. The outcome of the project will not only lead to advances in system technologies, but also provide a framework for future progress in this field.


Job functions:

  1. Preparation of selected solvents (e.g., ether-functionalized cations, salt metathesis reactions).
  2. High-purity characterization and purification of the developed solvents (e.g., NMR, FTIR, Raman spectroscopy).
  3. Electrolyte formulations and characterization of the bulk properties, solvation and oxygen solubility.
  4. Validation of electrolyte formulations in full Na-oxygen cell prototypes (cyclic voltammetry, RRDE voltammetry, electrochemical impedance spectroscopy, galvanostatic experiments).
  5. Post-mortem characterization of the electrodes (NMR, Raman, FTIR, XRD, SEM, etc.).
  6. Proof of concept of a solid-state Na-oxygen battery based on the best performing electrolyte formulation (e.g., synthesis and characterization of solid electrolytes, electrochemistry.


The following techniques will be used through the project:

  • Structural, microstructural and physicochemical characterizations: Solid and liquid NMR, X-ray diffraction, electron microscopy, Raman and FTIR spectroscopies.
  • Electrolyte preparation according to different synthetic routes.
  • Advanced electrochemical characterizations (CVs, galvanostatic experiments, cycling).



CIC energiGUNE will host the candidate granted by the Marie Sklodowska-Curie Actions (MSCA) Postdoctoral Fellowship to develop the project described.

The grant provides an allowance to cover living, travel and family costs. In addition, the EU contributes to the training, networking and research costs of the fellow, as well as to the management and indirect costs of the project. The grant is awarded to the host organisation, usually a university, research centre or a company in Europe. More information about the grant: 

At CIC energiGUNE, researchers have access to a complete set of existing laboratory infrastructure and equipment, as well as to the needs identified during the project development to ensure a fruitful stay and the fullfilment of the objectives in due time.  

Integration in an enthusiastic and multidisciplinary young group with great projection and commitments with sustainability and research quality.



All applicants are invited to submit their applications including a cover letter, a detailed curriculum vitae and two reference letters DEADLINE EXTENDED UNTIL THE 18TH OF JUNE at this website.

The estimated final submission deadline to the European Commission is 15 September 2021. The funding decisions should be communicated around February 2022, and projects can start around April 2022 or later.


The selection process ends once the candidate is selected.

CIC energiGUNE is committed to affirmative action, equal opportunity and the diversity of its workforce.


  • PhD in chemistry, chemical-physics, physic-chemistry or related fields.
  • Research experience in organic chemistry and/or polymers will be highly value.
  • Experimental skills in electrochemical and physicochemical characterization (such as Raman and infrared spectroscopy, nuclear magnetic resonance) are sought.
  • A team player who can collaborate with other groups, technical centers, and industries.
  • Very good verbal and written communication skills in English
  • MSCA Postdoctoral Fellowship specific requirements:
    • Applicants should have recently completed their postgraduate studies (between 15/09/2013 and 14/09/2021)
    • Applicants must have a strong publication record. It will be valuable that applicants have papers published with no contribution of the PhD supervisor and papers published as first corresponding author…
    • Once the candidate is selected by CIC energiGUNE, in order to apply for MSCA PF funding, applicants need to prepare a research proposal together with the host organization that will be submitted to the European Commission. The position is linked to the approval by the EC.