This fully funded PhD opportunity at Auckland University of Technology (AUT) offers an exciting interdisciplinary research project at the intersection of surface chemistry, biopolymers, and organic chemistry. The focus is on developing sustainable particle surfactants—specifically, cellulose-based nanoparticles (Celluspheres™)—for next-generation microemulsion flow batteries. The project is part of the Applied Doctorates Scheme and is affiliated with the MacDiarmid Institute for Advanced Materials and Nanotechnology, providing access to a vibrant research network and postgraduate community.

The research addresses the urgent need for safe, efficient, and sustainable energy storage solutions to support the global transition to renewable energy. Microemulsion flow batteries (MeFBs) are a promising technology for large-scale energy storage, but their adoption is limited by reliance on petrochemical feedstocks and challenges in electrolyte formulation. This project aims to pioneer bio-derived surfactants for integration into Allegro Energy’s proprietary MeFB electrolyte formulations, bridging green chemistry, materials science, and surface science.

Celluspheres™, developed at AUT and commercialised by Dot Ingredients Ltd, are Janus cellulose nanoparticles with distinct hydrophilic and lipophilic faces, enabling superior interfacial activity and emulsion stability via a Pickering mechanism. Sourced sustainably from timber off-cuts, these nanoparticles offer both environmental sustainability and high performance, aligning with New Zealand’s circular economy and emissions-reduction goals.

The doctoral research will progress through three milestones: (1) synthesising and characterising Celluspheres nanoparticles and assessing their emulsion behaviour under battery-relevant conditions; (2) engineering second-generation surfactants with anionic and cationic variants to optimise charge transfer and emulsion stability; and (3) designing multifunctional derivatives and conducting process-intensification studies for pilot-scale synthesis. The student will be co-supervised by AUT and Dot Ingredients, with an extended placement at Allegro Energy in Australia for formulation testing and technology translation.

This project will equip the successful candidate with advanced skills in colloid chemistry, electrochemical materials, and commercial scale-up, preparing them for leadership in the green-energy workforce. Outcomes will include reduced dependence on petrochemical surfactants, strengthened local manufacturing supply chains, and demonstration of New Zealand-developed green technologies for global low-carbon transition.

Funding includes a generous annual stipend (NZD$35,501 for 3 years, with 2% annual increase), full tuition fees, and insurance for international students. Applicants must meet AUT’s academic and English language requirements for PhD entry. The expected start date is between 1 April and 1 June 2026. Applications close on 19 January 2026, but early contact is encouraged. For more information, see the AUT PhD programme page, the Applied Doctorates Scheme, and the research group’s website.