Facile in situ nitrogen-doped carbon coated iron sulfide as green and efficient adsorbent for stable lithium–sulfur batteries

Iron-chalcogenide-based electrode materials for electrochemical energy storage

“…21 Apart from the geopolitical and economic issues, unfortunately, LIBs are approaching the limit of their theoretical energy density, which cannot meet the ever-increasing demand for the growing EV market and the emerging modern technology powered by energy storage devices. 22–24 Given all this, other alternative electrochemical energy storage devices beyond LIBs such as Li–S batteries, metal–air batteries and KIBs have also been explored to meet the various demands. 25–30…”

“…21 Apart from the geopolitical and economic issues, unfortunately, LIBs are approaching the limit of their theoretical energy density, which cannot meet the ever-increasing demand for the growing EV market and the emerging modern technology powered by energy storage devices. [22][23][24] Given all this, other alternative electrochemical energy storage devices beyond LIBs such as Li-S batteries, metal-air batteries and KIBs have also been explored to meet the various demands. [25][26][27][28][29][30] In battery systems, electrode materials are the main contributors to electrochemical performances, therefore, designing and fabricating appropriate electrode materials with high specic capacity, long cycle life and low cost is of paramount importance to develop next-generation energy storage devices.…”

Rational Construction of Sulfur-Deficient NiCo2S4–x Hollow Microspheres as an Effective Polysulfide Immobilizer toward High-Performance Lithium/Sulfur Batteries

“…Various strategies have been developed to tackle the issues mentioned above. − One of the most important strategies focuses on constructing various composites as sulfur host materials, such as carbon materials, , metal oxides, − and metal sulfides. − Yet, nonpolar carbon exhibits inferior physical adsorption to the polar intermediate polysulfides, which cannot effectively prevent the dissolution of polysulfides . While polar materials such as Co 3 O 4 and TiO 2 act as chemical trappers toward LiPSs, they have intrinsically low electrical conductivity, which makes them unable to diffuse/transform polysulfides in time, leading to a slow redox reaction. , Therefore, an ideal sulfur carrier should simultaneously realize LiPS adsorption/trapping, which is very critical to achieve an outstanding cycling stability.…”

Template-synthesis of a poly(ionic liquid)-derived Fe1−xS/nitrogen-doped porous carbon membrane and its electrode application in lithium–sulfur batteries

“… 4 The application scope of nitrogen-doped porous carbons (NPCs) has been expanded drastically in the past two decades. They have been utilized in batteries, 5,6 fuel cells, 7 catalysis, 8 membrane separation, 9 and supercapacitors. 10 Particularly, NPCs have received considerable interest in lithium-ion batteries and lithium–sulfur (Li–S) batteries.…”

“… 25 To this end, some metal compounds, in particular transition metal sulfides, nitrides, and carbides, reveal a strong chemical bonding potential with LiPSs, which can improve the diffusion and catalytic reduction of soluble LiPSs. 26,27 Recently, metal sulfides M x S, such as FeS, 5 FeS 2 , 28,29 NiS, 30 and WS 2 31 were investigated as cathodes for Li–S batteries. The results disclosed that high LiPSs adsorption and following redox reaction on these catalysts enhanced the sulfur usage.…”