Abstract
Metal–sulfur batteries (MSBs) provide high specific capacity due to the reversible redox mechanism based on conversion reaction that makes this battery a more promising candidate for next‐generation energy storage systems. Recently, along with elemental sulfur (S8), sulfurized polyacrylonitrile (SPAN), in which active sulfur moieties are covalently bounded to carbon backbone, has received significant attention as an electrode material. Importantly, SPAN can serve as a universal cathode with minimized metal–polysulfide dissolution because sulfur is immobilized through covalent bonding at the carbon backbone. Considering these unique structural features, SPAN represents a new approach beyond elemental S8 for MSBs. However, the development of SPAN electrodes is in its infancy stage compared to conventional S8 cathodes because several issues such as chemical structure, attached sulfur chain lengths, and over‐capacity in the first cycle remain unresolved. In addition, physical, chemical, or specific treatments are required for tuning intrinsic properties such as sulfur loading, porosity, and conductivity, which have a pivotal role in improving battery performance. This review discusses the fundamental and technological discussions on SPAN synthesis, physicochemical properties, and electrochemical performance in MSBs. Further, the essential guidance will provide research directions on SPAN electrodes for potential and industrial applications of MSBs.
Highlights
Mohammad Shamsuddin Ahmed, Suyeong Lee, Marco Agostini, Min-Gi Jeong, Hun-Gi Jung, Jun Ming, Yang-Kook Sun,* Jaekook Kim,* and Jang-Yeon Hwang*
Due to Importantly, sulfurized polyacrylonitrile (SPAN) can serve as a universal cathode with minimized metal–polysulfide dissolution because sulfur is immobilized through covalent bonding at the carbon backbone
Ever, the energy density delivered by comsynthesis, physicochemical properties, and electrochemical performance in mercial Lithium-ion batteries (LIBs) is limited by the electrochem
Summary
SPAN is an electrochemically active, conductive, and metal-free sulfur/carbon composite that is used as a cathode in metalbattery systems. Since its first report in 2002, numerous synthesis methods have been explored for preparing composites. Using polymers, nanocarbon materials, molecules, or metals.[57] All methods and composite formations aim to add sulfur moieties within the carbon for improving the electrochemical performance. The performance and physical properties of SPAN materials are strongly related to the synthetic conditions. All types of methods and composites and their respective advantages are discussed
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
