FeS₂intercalated montmorillonite as a multifunctional separator coating for high-performance lithium–sulfur batteries

Abstract

It is a rising strategy to construct a multifunctional separator coating with cheap and abundant resources to promote the practical application of lithium-sulfur (Li-S) batteries. Herein, a novel FeS2 intercalated...

Montmorillonite-based materials for electrochemical energy storage

“…In order to further optimize the distribution of adsorption and catalytically active sites on the MMT-based composite and simultaneously avoid the use of Co resource, we adopted FeS 2 as the electrocatalyst to replace CoS 2 . 143 Meanwhile, the ultrafine FeS 2 nanoparticles were only introduced into the MMT interlayers, which was confirmed by the elemental mapping images of the surface of the composite (Fig. 8e), leading to the construction of a FeS 2 intercalated MMT structure.…”

“…Wherein, transition metal sulfides, such as CoS 2 and FeS 2 , were introduced in the MMT matrix, forming multifunctional MMT-based composites with high electronic conductivity, outstanding Li + transport properties, strong LiPS affinity, and superb electrocatalytic activity towards the LiPS redox. 142,143 Initially, CoS 2 was simultaneously coated on the surface and intercalated into the interlayers of the lamellar MMT matrix by adopting a simple hydrothermal method (Fig. 8a).…”

Recent Progress on Natural Clay Minerals for Lithium‐Sulfur Batteries

“…Additionally, FeS 2 was incorporated into MMT, creating a multifunctional separator (FeS 2 @MMT) that can both anchor and catalyze polysulfide redox reactions. [59] By implanting Co/Ncarbon into Li-MMT and modifying the PP separator, Yang et al developed Co/NÀ C@Li-MMT@PP which improved both conductive properties and electrochemical catalyst performance. [60] The elemental maps of Co/NÀ C@Li-MMT showed that Co, N, and C were uniformly distributed throughout the Li-MMT nanosheet, facilitating the transfer of Li + and electrons (Figure 8E).…”

“…Additionally, FeS 2 was incorporated into MMT, creating a multifunctional separator (FeS 2 @MMT) that can both anchor and catalyze polysulfide redox reactions [59] . By implanting Co/N‐carbon into Li‐MMT and modifying the PP separator, Yang et al .…”

Enhanced Physico‐Chemical Polysulfide Curtailment Using Carbon Nanotube‐Binary Metal Sulfide Nanocomposite for High‐Performance Lithium‐Sulfur Batteries

“…[35] Numerous works have employed unitary metal sulfide-coated separators to improve the electrochemical results of lithiumsulfur batteries. [36,37] The multifarious benefits offered by the metal-based sulfides of molybdenum, [38] iron, [39] cobalt, [40] The electrochemical output of lithium-sulfur batteries is highly restricted by the dissolution and shuttling of polysulfide intermediates, which leads to the polysulfide shuttle effect. The binary metal sulfides offer a greater number of active sites and better polysulfide interaction compared to the unitary metal sulfides.…”