PPy-constructed core–shell structures from MOFs for confining lithium polysulfides

Abstract

For sulfur host materials in Li-S batteries, the structure is important for suppressing the shuttle effect and buffering the volume expansion. A polypyrrole (PPy)-coated core-shell structure is obtained with porous...

High‐Entropy Prussian Blue Analogues and Their Oxide Family as Sulfur Hosts for Lithium‐Sulfur Batteries

“…Moreover, it can be clearly observed that the S 2p spectra in HE‐PBA‐S has an obvious chemical shift compared with that of pristine sulfur (Figure S16), that is from original 165.2 eV to 164.6 eV of S 2p 1/2 and 164.0 eV to 163.4 eV of S 2p 3/2 . This confirms the great interaction between sulfur and HE‐PBA, and the applicability of HE‐PBA as sulfur carriers, which can be fixed in the cathode to suppress the shuttle effect and heighten the cyclic performance for Li−S batteries [28] . By governing the feeding ratio, the sulfur content was controlled precisely, and the accurate amount of sulfur loading was quantitatively analyzed by both thermal‐gravimetric analysis (TGA) (Figure S17) and elemental analysis (Table S2).…”

High‐Entropy Prussian Blue Analogues and Their Oxide Family as Sulfur Hosts for Lithium‐Sulfur Batteries

“…This confirms the great interaction between sulfur and HE-PBA, and the applicability of HE-PBA as sulfur carriers, which can be fixed in the cathode to suppress the shuttle effect and heighten the cyclic performance for LiÀ S batteries. [28] By governing the feeding ratio, the sulfur content was controlled precisely, and the accurate amount of sulfur loading was quantitatively analyzed by both thermal-gravimetric analysis (TGA) (Figure S17) and elemental analysis (Table S2). Given the high porosity of PBAs, sulfur can be introduced at approximately 70 % by weight.…”

The synthesis of zeolitic imidazolate framework/prussian blue analogue heterostructure composites and their application in supercapacitors

“…9 The synthesis of desirable functional materials for the construction of complex MOF composites is highly promising. 10–13…”

“…9 The synthesis of desirable functional materials for the construction of complex MOF composites is highly promising. [10][11][12][13] With the increasing demand for efficient energy storage systems, efforts to develop supercapacitors (SCs) with excellent cycling stability, fast charge-discharge processes, and superior power density. 14 Various MOFs are regarded as remarkable potential electrode materials used in SCs due to their low cost and high activity.…”