High-Energy 6T Batteries with Biomass-Derived Anode Materials

The current limitations of lithium-ion batteries (LIBs) in military applications include insufficient energy densities and safety concerns related to graphite anodes. Graphite anodes, though stable, have reached their performance ceiling and face issues such as lithium plating at high charge rates, reducing battery life and posing safety risks.To address these challenges, Farad Power Inc. proposes the development of high-energy 6T batteries utilizing biomass-derived silicon (Si) composite anode materials. Silicon anodes offer a substantial increase in energy density compared to graphite, which can significantly extend the endurance and range of sUAS and other high-power devices. However, silicon anodes face challenges such as significant volumetric changes during charge and discharge cycles, leading to mechanical stress, material degradation, and loss of capacity over time.Our patented technology synthesizes high-performance anode materials from renewable biomass sources, presenting a sustainable solution that enhances national security by reducing dependence on foreign sources and supporting local industries. The proposed Phase I effort aims to demonstrate the feasibility of silicon anode full cells sustaining extended cycling while maintaining capacity, aligning with the Armyĺs Battery Science and Technology Strategy.Phase I Objectives:Develop C/Si Anode Material:Synthesize and optimize carbon/silicon composite anode material from biomass-derived precursors.Ensure the material has high specific energy suitable for use in lithium-ion batteries.Characterize (XRD, Raman, BET, PIXE):Analyze the crystal structure, molecular and chemical properties, surface area, and elemental composition of the synthesized anode material.Test 1/2 Cell (>100 Cycles, >80% Capacity):Assemble half-cells using the developed C/Si anode material.Test the electrochemical performance of the half-cells, focusing on cycling stability and capacity retention.Ensure the half-cells maintain over 80% of their initial capacity after more than 100 charge/discharge cycles.By successfully developing and demonstrating the feasibility of biomass-derived silicon composite anodes, this project will lay the foundation for future development and scaling of high-performance silicon anode lithium-ion cells. These advancements will enable longer mission durations, quicker turnaround times, and reduced logistical burdens for military applications. Additionally, integrating safety features such as passivation layers and electrolyte additives will ensure the reliability and survivability of the battery systems in various operational environments.This initiative will contribute to the Army's operational readiness and efficiency while supporting strategic independence and national security through a sustainable and locally sourced battery material supply chain.