Black BaTiO3 as multifunctional sulfur immobilizer for superior lithium sulfur batteries

Magnetic‐Field‐Stimulated Efficient Photocatalytic N2 Fixation over Defective BaTiO3 Perovskites

“…There was no significant change in the structure, morphology,a nd chemical compositions after NaBH 4 reduction, which agrees with previously reported defective titanium oxides with surface amorphous layers obtained by H 2 or Al reduction. [18][19][20] To observe the crystal structure and surface structure from the atomic scale,high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) images and the corresponding annular bright-field scanning transmission electron microscopy (ABF-STEM) images were collected (Figure 1E-H). HAADF-STEM was sensitive to elements with high Z, such as Ba, while ABF-STEM was sensitive to light elements,s uch as O.…”

Ferroelectric Metal–Organic Framework as a Host Material for Sulfur to Alleviate the Shuttle Effect of Lithium–Sulfur Battery

“…Recently, the ceramic ferroelectric has been used as additives to sulfur cathodes because of the internal electric field induced by spontaneous polarization to trap polysulfides [16] . Although the ceramic ferroelectrics enable improve the cycle stability of lithium–sulfur batteries, they still have the following disadvantages: 1) Poor pore structure leads to the addition of nonelectrochemical active substances, which leads to the reduction of energy density [17, 18] . 2) Extreme synthesis conditions result in the increase of production cost and limit the large‐scale application [19, 20] .…”

“…[16] Although the ceramic ferroelectricse nablei mprove the cycle stability of lithium-sulfur batteries, they still have the following disadvantages:1 )Poor pore structure leads to the addition of nonelectrochemical active substances, which leads to the reduction of energy density. [17,18] 2) Extreme synthesis conditions result in the increaseo fp roduction cost and limit the large-scale application. [19,20] Over the past decade, the emergence of ferroelectricm etal-organic frameworks (FMOFs) has provided us with ap romising opportunity to improve the shortcomings of traditional ceramic ferroelectrics in lithiumsulfurb atteries.…”

A microporous carbon derived from metal‐organic frameworks for long‐life lithium sulfur batteries

“…6,7 However, the insulativity of active sulfur and discharge product (Li 2 S), the solubility of discharge intermediates (Li 2 S x , 4 ≤ x < 8) into organic electrolyte, and the "shuttle effect" by diffusing polysulfides into the negative electrode to produce parasitic reactions, cause serious active sulfur loss from cathode and cycle deterioration of the batteries, greatly hindering the Li-S batteries' development and commercialization. [8][9][10] In order to address these issues, significant progresses have been made in the last decade by immobilizing sulfur within various host materials to form sulfur-based composites, like sulfur/carbon composites, [11][12][13][14][15][16][17][18] sulfur/metallic compounds composites, [19][20][21][22][23][24][25][26] and sulfur/polymer composites. [27][28][29][30][31] It is noted that among the various host materials, microporous carbon is quite distinctive, because esterbased electrolyte was usually used for sulfur/microporous carbon (S/MC) composites based Li-S batteries, while ether-based electrolyte was commonly used in other composites based Li-S battery systems.…”

“…In order to address these issues, significant progresses have been made in the last decade by immobilizing sulfur within various host materials to form sulfur‐based composites, like sulfur/carbon composites, sulfur/metallic compounds composites, and sulfur/polymer composites . It is noted that among the various host materials, microporous carbon is quite distinctive, because ester‐based electrolyte was usually used for sulfur/microporous carbon (S/MC) composites based Li‐S batteries, while ether‐based electrolyte was commonly used in other composites based Li‐S battery systems.…”