Low-voltage-hysteresis aluminum–sulfur battery with covalently functionalized mesoporous graphene
Weiqin Chu, Shiman He, Shiqi Liu, Xu Zhang, Shuaixia Li, Haijun Yu
Abstract
A pyridyl-functionalized mesoporous graphene is developed to accommodate sulfur for Al-S batteries, which can significantly reduce the voltage hysteresis to ∼0.43 V. The reaction kinetics of the Al-S battery are accelerated by the catalyst-free carbon host, ascribed to both the mesoporous graphene structure and the covalently functionalized pyridyl groups.
Topics & Concepts
GrapheneCovalent bondMesoporous materialMaterials scienceHysteresisBattery (electricity)SulfurNanotechnologyLithium–sulfur batteryAluminiumVoltageChemical engineeringElectrodeChemistryCatalysisElectrochemistryOrganic chemistryElectrical engineeringComposite materialMetallurgyPhysicsQuantum mechanicsPhysical chemistryEngineeringPower (physics)Advanced Battery Materials and TechnologiesAdvancements in Battery MaterialsSupercapacitor Materials and Fabrication