Is Cathode 2 News Today

Lithium sulfide (Li2S) is a promising cathode material with a high theoretical capacity (1166 mA h g−1) that can be paired with nonlithium-metal anodes, which can eliminate the safety issue related with lithium anode. Nevertheless, its poor electronic conductivity and low Li ion diffusion lead to the high activation barrier of Li2S and sluggish kinetic conversion to polysulfides, hindering its commercialization. Herein, Li2S particles coated by Co nanomaterial-decorated porous carbon shells (L...

Realizing a lithium sulfide (Li2S) cathode with both high energy density and a long lifespan requires an innovative cathode design that maximizes electrochemical performance and resists electrode deterioration. Herein, a high-loading Li2S-based cathode with micrometric Li2S particles composed of two-dimensional graphene (Gr) and one-dimensional carbon nanotubes (CNTs) in a compact geometry is developed, and the role of CNTs in stable cycling of high-capacity Li–S batteries is emphasized. In a ...