The urgent global shift towards sustainable energy systems necessitates advancements in energy storage technologies, particularly in the face of dwindling non-renewable fossil fuel resources and escalating energy demands. Lithium-ion batteries (LIBs), which currently dominate the commercial battery market, are approaching their theoretical limits in energy density, typically ranging from 100 to 265 Wh kg -1 . This limitation has spurred research into alternative high-energy-density systems, notably lithium-sulfur (Li-S) batteries, recognized for their potential ultra-high theoretical energy density of 2500 Wh kg -1 and environmental advantages. However, Li-S technologies face significant challenges, such as the "shuttle effect" due to polysulfide dissolution and dendrite growth on lithium metal anodes, which hinder their practical application. On the anode front, silicon-based materials are considered a prime candidate for high-energy-density batteries due to their impressive capacity of 3579 mA h g -1 , second only to lithium metal. Their abundance and environmental friendliness further augment their suitability as an alternative in battery technologies. However, these materials are challenged by substantial volume expansions during charge/discharge cycles, exceeding 300% particularly when high ratios of silicon are used in the electrodes. This expansion can cause the silicon particles to fracture under mechanical stress, leading to a loss of contact with the current collector and a subsequent decrease in battery capacity. Various strategies have been deployed to enhance performance, such as refining the nanostructures, embedding the silicon particles within a carbon matrix, developing specifically tailored binders, and enhancing the electrolytes. In contrast, a sulfurized polyacrylonitrile (S@PAN) was exploited by Wang at 2002, which employs a solid-solid conversion mechanism that effectively addresses the dissolution of polysulfides, commonly associated with the shuttle effect. Although this material has a voltage loss (average discharge voltage at ~1.8 V) compared to the traditional sulfur cathode (average discharge voltage at ~2.2 V), it still potentially afford a high energy density. The compatibility of carbonate electrolyte makes S@PAN a good applicant to match graphite or silicon anodes.