Elevated electrochemical performances enabled by a core-shell titanium hydride coated separator in lithium-sulphur batteries.

ABSTRACT: To date, the lithium-sulphur battery is still suffering from fast capacity fade and poor rate performance due to its special electrochemical mechanism. The interlayer or separator with conductive coatings is considered effective in inhibiting the shuttle effect. Here, we proposed a novel metal hydride with high conductivity and preferably chose TiH₂ as the conductive coating because of its low cost, high conductivity, and good stability in air. The TiH₂ powder was prepared by a simple ball-milling method, and the effect of the atmosphere was also investigated. A core-shell heterostructure formed, in which the TiH₂ core acted as an electron transfer pathway, and the titanium oxide nano-shell functioned as the absorber for polysulfides. Thus, with the combina

SUBMITTER: Zhao Z 

PROVIDER: S-EPMC9041292 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature