Turning potato starch into batteries for electric vehicles

York University

European Scientists team up with industry partners to turn potato starch into batteries for electric vehicles. Nine partners from across the EU are working to scale up a process for converting renewable plant-based resources into a building block for energy storage and chemical catalysis.

“Fundamentally, this project is about replacing a fossil resource, with a more sustainable, biorenewable alternative,” explains David Amantia, Principal Investigator for the project from Leitat, Spain. “What is exciting, is that by bringing together the nine partners, we are able to hone the technology from research level right through to a scaled-up production process for industrial testing.”

One of the technologies being trialled through this project is a highly-innovative process developed at the University of York. It uses starch or pectin, which can be sourced renewably from a wide variety of plants; for this project, the team are focusing on three sources: potato starch, alginic acid and fruit pectin.

“The first step in our conversion uses expansion technologies, then we freeze dry the material before converting it into a carbon material using a furnace. We are investigating using this as a catalyst for chemical processes and to make batteries for electric vehicles,” explains Duncan Macquarrie of the University of York’s Green Chemistry Centre of Excellence.

Over the course of the four-year project – funded by the EU’s Horizon2020 programme – the team will be trialling different methods for converting three bio-based starting materials into a porous carbon, including York’s process.

They will then be adapting the resulting material for different uses, including: energy storage for electric vehicles and as a green catalyst for the chemicals industry.

“We are using the porosity offered by nature to engineer a stable material with controlled pores, like changing the hole sizes in a sponge. By manipulating these and studying how they interact with other materials, like metals, we can change how the material performs; ultimately improving its effectiveness for different uses.” explains Peter Hurst, Senior Technologist at the BDC.

Over the past year, the parameters and requirements for the end materials have been agreed. Now, the team at the Biorenewables Development Center based in York are taking the process from a lab scale of 100g, and scaling it up to develop a pilot line capable of producing up to 20kg/day of the material. This will provide enough sample material for the industry partners to test and analyse.

If successful, one of the project outcomes, will be a pilot-scale production plant for producing this material, based in York.

 

by Will Yi Huang

 

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