Lithium-Sulfur Batteries

I will present our group’s research on integrating material development, in-operando and postmortem characterization, and device testing (coin/pouch) to develop lithium-sulfur batteries. I will discuss representative projects on developing cathode, anode, and electrolyte chemistries to mitigate challenges such as the polysulfide shuttle, low S/Li2S conductivity, and lithium dendrites. Additionally, I will present our work on developing operando diagnostic tools for real-time monitoring during cycling to inform battery material design/engineering.

Global demand for Li-ion batteries is expected to soar to around 4.7 TWh by 2030. Replacing expensive metal oxides with earth-abundant sulfur cathodes has obvious appeal. This talk will outline a strategic approach for developing safe Li-ion/sulfur batteries capable of achieving high-cycle life. It will delve into the specific methodologies and material considerations crucial for enhancing the long-term stability and performance of Li/S cells.

This talk will provide an overview of the latest advancements in lithium-sulfur battery research, highlighting progress in addressing critical challenges.

This talk explains the advantage of monoclinic gamma crystalline sulfur in a Lithium Sulfur Battery. Such allotrope has the potential to catapult gravimetric energy density towards 1000 Wh/kg.Ttheion updates the latest developments on cell level, and explains the underlying scientific concept and the electrochemical interactions.

XBM and WMU developed CarbonX SulCAM, a patent-pending Sulfur Cathode Active Material, to deliver high capacity at a lower cost, reinforcing the U.S. battery supply chain. CarbonX utilizes abundant domestic byproducts like sulfur doped in a cryogel carbon host (CarbonX) made from paper/pulping waste (tannin/lignin), promoting a sustainable e-Mobility circular economy. This presentation outlines the technology's progression from initial lab validation at WMU to commercial pilot production at XBM, emphasizing the use of industrial byproducts and AI-driven manufacturing to meet performance targets for EV, aerospace, and stationary storage.

This talk will highlight our group’s recent advances in identifying bottlenecks in the multistep redox reactions of lithium–sulfur batteries using advanced electrochemical techniques. The influence of materials chemistry and architecture, together with testing protocols, on reaction pathways, transport limitations, and overall cell stability is discussed, and mechanistic insights are provided to guide the rational design of more durable and high-performance lithium–sulfur batteries.

Lyten has been developing Lithium-Sulfur (Li-S) battery technology since 2018 and, following the recent acquisition of the former Northvolt assets, has expanded into giga-scale cell production. Lyten’s Li-S architecture leverages Lyten 3D Graphene, a tunable, methane-derived carbon nanomaterial whose structure and chemistry can be precisely engineered to enhance sulfur utilization and energy density. The ability to tailor the structural and electrochemical properties of this material enables optimization of key cell-level parameters, including gravimetric and volumetric energy density. This presentation will discuss the influence of Lyten 3D Graphene tunability on Li-S cell performance, highlight current-generation drone cells now in commercial production, and review ongoing development for aerospace, automotive, and stationary storage applications. The broader implications of Li-S chemistry for enhancing supply chain resiliency and reducing dependency on critical minerals will also be addressed.

Zeta Energy's technology has effectively addressed the primary issues preventing the commercialization of lithium-sulfur (LiS) batteries: dendrite formation and sulfur loss due to the polysulfide shuttle. This presentation will offer a comprehensive insight into our advanced anode and cathode technologies, showing how their synergy results in high-performance cells that fully leverage the inherent benefits of low-cost, sustainable, and accessible energy storage solutions.

Technological and commercial development in the lithium-sulfur space has accelerated significantly in the last two years. In this presentation, we present our contributions to building this momentum. We focus on: 1) the performance of our latest cathode technology, 2) the importance of partnership, and 3) the marriage of technology and partnership in delivering good cell-longevity and high-power—two of the hurdles that most intimidate sulfur battery technology.

We will present the R&D capabilities and ongoing projects at Navitas, with a focus on our Li–S battery program. We will outline our research and commercialization strategies, highlight key technical achievements and differentiate features of the program, and provide an outlook on future development directions.

Li-S batteries hold the promise of both high energy and low cost. However, achieving performance at scale often includes compromises on cost or energy density. Competition with incumbent Li-ion technologies makes scaling and commercialization even more challenging. Conamix will share prototype cell data for near-term applications. Partnerships and careful selection of the bill of materials delivers low cost, reduces scaling risk, and avoids supply chain limitations.