One-dimensional confined p–n junction Co₃S₄/MoS₂ interface nanorods significantly enhance polysulfide redox kinetics for Li–S batteries

Abstract

Exploring MoS2-based sulfur hosts with high performance is an effective strategy for promoting the extensive application of Li-S battery. Hence, the one-dimensional (1D) Co3S4/MoS2 nanorods (n-Co3S4/p-MoS2 NR) are prepared by...

Field‐assisted electrocatalysts spark sulfur redox kinetics: From fundamentals to applications

“…[57] As a result, the Li−S batteries assembled with the MoS 2 -MoO 3 /CS-modified separator deliver superior cycling stability with only 0.0135% capacity decay per cycle after 600 cycles at 1 C. Escorted by the well-known promotion of interfacial charge transfer, the electronic redistribution and agminated active sites located at the interface of p-n junctions are critical to strengthen the adsorption ability of LiPSs and reduce the overpotential of Li 2 S nucleation as well. [58,59] Notably, the concept of spontaneous formation of built-in EF could be further extended to Mott-Schottky, p-p, and n-n junctions with a semiconductive substance, and thereinto, the applicability of Mott-Schottky electrocatalysts in the Li-S realm has been continually testified. [60,61] Identically, to diminish the insurmountable kinetic energy barrier required for LiPSs to cross the grain boundaries inside the heterostructure, [62] a built-in EF was recruited to directionally propel the spatially stepwise sulfur redox on the surface of different components, as first proposed by our group (Figure 2E).…”