Synergetic Interlayer in Li‐S Batteries: Polysulfide‐Impeding Effect of Conductive Carbon Cloth Supporting Topological‐Phase Bi2Se3
Year: 2025
Type: article
Abstract: The shuttle effect and sluggish sulfur conversion kinetics hamper the development of lithium–sulfur batteries. In this study, Bi2Se3 nanosheets were grown in‐situ directly on a carbon cloth and adopted as an interlayer in lithium–sulfur batteries to accelerate sulfur chemistry kinetics. The topological phase of Bi2Se3 can effectively anchor soluble sulfur species, whereas the conductive carbon cloth provides electron transport pathways for the adsorbed polysulfides. Such a synergetic effect between the topological phase and conductive network impedes the severe shuttle effect of lithium polysulfides and accelerates the sulfur electrochemical redox reaction. Benefiting from such merits, a significantly improved specific capacity of 505 mAh g−1 at 4 C and cycling stability beyond 100 cycles with an average capacity decay rate of 0.16 % per cycle at 0.2 C was achieved when the interlayer was adopted in lithium–sulfur batteries. This study demonstrates the potential implementation of topological materials in advanced lithium–sulfur batteries.
Source: ChemElectroChem
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,750
OpenAlex ID: W4408329162