Nissan, Oxford University, and Gelion Launch UK-Funded CoRe-SoLiS Project to Develop High-Performance, Cost-Effective Lithium-Sulfur Solid-State Batteries for Automotive Applications

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Overview

Nissan, the University of Oxford, and Gelion Technologies are collaborating on the UK government-funded “CoRe-SoLiS” project to develop high-energy, long-lasting lithium-sulfur solid-state batteries for automotive applications. The initiative aims to integrate Gelion’s cost-effective Nano Encapsulated Sulfur (NES) cathode into Nissan’s future solid-state EVs, addressing key challenges like polysulfide formation to improve durability and cost while reducing reliance on critical minerals. This project seeks to deliver energy density comparable to high-performance NMC chemistries with competitive power, charging speed, cycle life, and low-temperature performance.

In Depth

Key Findings

Nissan Technical Centre Europe, the University of Oxford, and Australian battery innovator Gelion have commenced a three-year collaborative project, “CoRe-SoLiS,” backed by £2.4 million in UK government funding from Innovate UK. This initiative aims to develop high-performance, long-lasting lithium-sulfur (Li-S) solid-state batteries for automotive applications. At the core of the project is the integration of Gelion’s patented Nano Encapsulated Sulfur (NES™) cathode into Nissan’s future solid-state EVs. The primary objective is to overcome the limitations in performance and cycle life associated with polysulfide shuttling in conventional Li-S batteries, fostering the creation of safer, more durable, and affordable batteries that reduce dependence on critical minerals like nickel and cobalt.

Technical Details

Li-S batteries possess a theoretical specific energy of up to 2,600 Wh/kg (with practical implementations targeting 500-600 Wh/kg), significantly outperforming current lithium-ion batteries (typically 250 Wh/kg). However, polysulfide dissolution and shuttle effects, alongside interfacial instability with the lithium metal anode, have historically hindered their commercialization. The CoRe-SoLiS project’s NES™ cathode is engineered to mitigate these issues, aiming to achieve energy density comparable to high-performance NMC chemistries, while offering competitive power delivery, charging speed, cycle life, and low-temperature performance. The University of Oxford contributes expertise in solid-state anodes and cell fabrication, while Nissan focuses on technical integration and validation to meet automotive performance, safety, and manufacturability targets. This collaboration seeks to physically suppress polysulfide migration and enhance battery stability and longevity by utilizing a solid-state electrolyte as an alternative to traditional liquid electrolytes.

Background and Industry Context

The ability of Li-S batteries to utilize abundant and inexpensive sulfur as a cathode material presents a significant opportunity for substantial material cost reductions. This is a strategic response to the rising prices and supply chain risks of critical minerals such as lithium, nickel, and cobalt, driven by the surging demand for EV batteries. Innovate UK’s funding underscores the UK’s commitment to maintaining global competitiveness in next-generation battery research and development. In sectors like aerospace, electric vertical take-off and landing (eVTOL) aircraft, and high-performance lightweight consumer gadgets, the adoption of lithium-metal and lithium-sulfur technologies is accelerating. Li-S batteries, particularly, are expected to achieve energy densities exceeding 500 Wh/kg for aviation, enabling longer flight durations and increased payload capabilities.

Outlook

Should the CoRe-SoLiS project succeed, lithium-sulfur solid-state batteries could revolutionize the EV market, contributing to the realization of greener and more sustainable mobility. Batteries that combine low cost, high energy density, long cycle life, and enhanced safety are key to accelerating EV adoption. This project is anticipated to overcome major technical hurdles for Li-S batteries, paving the way for mass production and diversifying battery materials within the automotive industry, thereby strengthening supply chain resilience. In the future, Li-S batteries, alongside lithium-metal batteries, are poised to play a pivotal role in diverse high-performance applications, including aviation.