High-entropy oxychloride increasing the stability of Li-sulfur batteries.

ABSTRACT: A novel lithiated high-entropy oxychloride Li_0.5(Zn_0.25Mg_0.25Co_0.25Cu_0.25)_0.5Fe₂O_3.5Cl_0.5 (LiHEOFeCl) with spinel structure belonging to the cubic Fd3̄m space group is synthesized by a mechanochemical-thermal route. Cyclic voltammetry measurement of the pristine LiHEOFeCl sample confirms its excellent electrochemical stability and the initial charge capacity of 648 mA h g^-1. The reduction of LiHEOFeCl starts at ca. 1.5 V vs. Li⁺/Li, which is outside the electrochemical window of the Li-S batteries (1.7/2.9 V). The addition of the LiHEOFeCl material to the composite of carbon with sulfur results in improved long-term electrochemical cycling sta

SUBMITTER: Zukalova M 

PROVIDER: S-EPMC10245222 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature