Problems and Challenges in Lithium Sulphide Cathode

In the realm of nanotechnology, the rapid evolution of electronic gadgets, versatile hardware, and electric vehicles has laid bare the inadequacies of current lithium batteries, particularly in terms of deliverable power and cycle life. Addressing the escalating energy demands, lithium-sulfur (Li–S) batteries have emerged as a central focus of technological innovation. The theoretical allure of these batteries lies in their impressive specific capacity of 1675 mA h/g and an energy density reaching up to 2600 Wh/Kg. However, the integration of sulfur as an independent cathode material is hindered by its insulating nature and the formation of soluble compounds. Overcoming these challenges necessitates the use of additives to establish a conducive conducting network for effective composite formation in electrode materials. Recent advancements, including microstructure design involving various materials like aligned sulfur/carbon nanotube nanocomposite cathodes, show promise in enhancing lithium storage activity. These explorations offer valuable insights into crafting novel cathode materials with distinctive morphologies and crystal structures for future Li–S batteries, ultimately enhancing the electrochemical process, encompassing aspects like cycling stability and efficiency. This chapter endeavors to shed light on past research endeavors, emphasizing the common use of Li–S batteries, while addressing hurdles related to cathode materials, their compatibility with electrolytes, and the anode. By navigating through these challenges, the aim is to pave the way for the practical adoption of Li–S batteries, aligning with the surging demands of contemporary energy-intensive applications.