PhD Position Development of durable engineered LiAl-Layered Double Hydroxides adsorbents for direct Li extraction applications (NP)

Lithium, a pivotal element with exceptional properties, has risen as a critical raw material in various industries, particularly in energy storage. The widespread adoption of Li-ion batteries in portable electronics, electric vehicles, and renewable energy systems underlines its crucial role in advancing cleaner energy solutions.

In 2022, around 74% of global Li production was consumed by the Li-ion batteries, underscoring its central role. Recent assessments for the EU classify Li as a critical raw material based on supply risk and economic importance.

While traditional extraction methods involve hard rock mining, the focus has shifted to brine extraction due to its cost-effectiveness and environmental friendliness.

There is a growing interest in sustainable Li extraction technologies. Direct Li extraction (DLE) including extraction from geothermal and unconventional sources, present opportunities for eco-friendly production. DLE, similar to shale's impact on oil, could revolutionize Li supply, potentially doubling production.

DLE is expected to transform the Li sector, offering a sustainable path for meeting the global Li demand. The DLE adoption is mainly influenced by advancements in Li-selective adsorbents.

Al-based adsorbents based on LiAl-LDH composition are one of the most promising adsorbents for lithium(Li) extraction, applied especially to salt lake brines, which are dependent on the neutral desorption in particular without dissolution damage. Among the state of the art adsorbents used in this application, the LiAl-LDHs exhibit lower adsorption capacity than Mn-based orTi-based Li sorbents, as the adsorption is quantitatively controlled by the Li+ deintercalation degree of the LDH layers. The adsorption performance and cycling durability have been shown to be closely related to the structural stability in the desorption stage.

The aim of this PhD project is to increase the long-term stability by tuning the LiAl-LDH chemistry, giving rise to engineered LiAl-LDHs. In terms of layer engineering, doping within the LDH sheets is an attractive strategy to facilitate the adsorption process.

The research will be conducted mainly by synthesis of powders of LiAl-LDHs and innovative compositions, with focus on structural related aspects for enhanced sorption properties for both adsorption and desorption of lithium from synthetic and real Li containing brines. By engineering the layers of LiAl-LDHs, also a concomitant increase of the Li adsorption capacity can be achieved. The research within this project will help to develop procedures for synthesis of highly efficient and selective Li adsorbent. This will open new possibilities for the recovery of Li from challenging aqueous media including brines.

The research will be mainly at University of Antwerp(LADCA) but in close connection with VITO (CAST) and you will build up knowledge on synthesis of layered double hydroxides type materials and tailoring their composition, materials characterization, Li sorption tests and analysis. 

How to apply?
Applications should be submitted online and include a copy of your CV, diploma transcripts and a cover letter. 

More information about the application procedure is available on the VITO website. 

Overview of the jury’s scheduled in 2025 and deadlines: https://vito.be/en/jobs/phd/phd-jury

• Master in chemistry

• Strong analytical problem-solving skills

• Creative, critical and hand-on mentality

• Good oral and written communication skills in English