Defect engineering in metal sulfides for energy conversion and storage

Structural modification from centrosymmetric Rb4Hg2Ge2S8 to noncentrosymmetric (Na3Rb)Hg2Ge2S8: mixed alkali metals strategy for infrared nonlinear optical material design

“…In chalcogenides, the typical NCS chromophores encompass [MQ 4 ] n − (M = Ag, Zn, Ga, Ge, P, etc. ; Q = chalcogen), 9–13 trigonal-planar p-conjugated groups (AgQ 3 , HgQ 3 ), 14,15 d 0 -second-order Jahn–Teller-effect cations (Ti 4+ , Nb 5+ ), 16 and ns 2 -electron cations (Pb 2+ , As 3+ ). 17 Under the guidance of these ideas, high-performance IR NLO materials with tetrahedron [MQ 4 ] n − as the NLO functional motif have been extensively studied, such as BaGa 4 Q 7 (Q = S, Se), 18,19 BaGa 2 MQ 6 (M = Si, Ge; Q = S, Se), 20 M II 3 P 2 S 8 (M II = Zn, Hg), 21,22 and AM II M IV Q 4 (A = Eu, Sr, Ba; M II = Mn, Zn, Cd, Hg; M IV = Si, Ge, Sn; Q = S, Se).…”

Mineral composite materials and their energy storage and energy catalysis applications

“…Copyright © 2020, John Wiley & Sons 本课题组 [58] 将钴尖晶石负载在 p 型光催化材料 g-C 3 N 4 上构成 p-n 结复合材料，制备得到对称型 [63] 应运而生。天然 矿物材料中的一些金属硫化物本身具有高的理论容量和低放电平台，往往具有相当的储能性能，主要是石墨和 天然硫族化合物 [64] ，如闪锌矿 [65] 、辉锑矿(Sb 2 S 3 )和黄铁矿 [66] 等。然而，由于天然矿物的电导率较差，常常 需要设计矿物复合材料提高其离子迁移和结构稳定性。 Sb 2 S 3 属斜方晶系 Pnma(图 4(a)) [67] ，每 mol 可以容纳 12 mol Na + ，显示出比 Sb 2 O 3 更高的电导率和理论 比容量(947 mAh g -1 ) [68] 。Sun 研究组 [60] 认为辉锑矿的储能失效机制起源于 Sb 2 S 3 体积膨胀带来的 Sb、S 两相 of capacity between FeS 2 /FeS/S composite and CNT/S composite [62] , Copyright © 2019, John Wiley & Sons 在锂硫电池中 [63] [69] 。Copyright © 2017, Elsevier Figure 5 (Color online) Halloysite nanotube composite electrolyte for all-solid-state lithium-sulfur batteries [69] .…”

Recent advances in oriented metal–organic frameworks for supercapacitive energy storage

“…Various materials have been widely researched, including transition metal oxides/chalcogenides/hydroxides/phosphates, 19–24 carbon allotropes, and conductive polymers. 22 Compared to conventional electrode materials, MOF-based electrodes have gained prominence as an emergent class of porous crystalline materials due to their fascinating structural features, high porosity, varied architectures, and tailored functionalities.…”

“…22 Compared to conventional electrode materials, MOF-based electrodes have gained prominence as an emergent class of porous crystalline materials due to their fascinating structural features, high porosity, varied architectures, and tailored functionalities. 25 MOFs have found their widespread application in gas storage systems, 26 aqueous energy devices, 20,27–31 catalysis, 32 and so on.…”