<i>In Situ</i> Localized Polysulfide Injector for the Activation of Bulk Lithium Sulfide
Matthew Li, Jun Lü, Jiayan Shi, Seoung‐Bum Son, Dan Luo, Ira Bloom, Zhongwei Chen, Khalil Amine
Abstract
The activation of commercial Li2S remains to be one of the key challenges against its commercialization as a starting cathode material for a sulfur-based Li-ion battery system. In this work we take advantage of the lower oxidation potential of commercial Na2S (1–3 wt%) to serve as an in situ and local polysulfide injector for the activation of commercial Li2S (70 wt%). In contrast to applying pre-solvated redox mediators, this technique allows for the activation of commercial Li2S at lower voltages with an electrolyte content as low as 3 μL mg–1Li2S at 3 mgmgLi2S cm–2 and 4 μL mg–1Li2S at 6.5 mgLi2S cm–2 without any other material modification.
Topics & Concepts
PolysulfideChemistryElectrolyteCathodeInjectorSulfideSulfurLithium (medication)Battery (electricity)RedoxCommercializationIn situInorganic chemistryChemical engineeringOrganic chemistryElectrodePhysical chemistryPower (physics)EndocrinologyMedicinePhysicsMechanical engineeringPolitical scienceLawEngineeringQuantum mechanicsAdvanced Battery Materials and TechnologiesAdvancements in Battery MaterialsAdvanced battery technologies research