High Volumetric Energy Density Sulfur Cathode with Heavy and Catalytic Metal Oxide Host for Lithium-Sulfur Battery.

ABSTRACT: For high-energy lithium-sulfur batteries, the poor volumetric energy density is a bottleneck as compared with lithium-ion batteries, due to the low density of both the sulfur active material and sulfur host. Herein, in order to enhance the volumetric energy density of sulfur cathode, a universal approach is proposed to fabricate a compact sulfur cathode with dense materials as sulfur host, instead of the old-fashioned lightweight carbon nanomaterials. Based on this strategy, heavy lanthanum strontium manganese oxide (La_0.8Sr_0.2MnO₃), with a high theoretical density of up to 6.5 g cm^-3, is introduced as sulfur host. Meanwhile, the La_0.8Sr_0.2MnO₃ host also acts as an efficient electrocatalyst to accelerate the diffu

SUBMITTER: Liu YT 

PROVIDER: S-EPMC7312450 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature