Sandwich Structures Constructed by ZnSe⊂N‐C@MoSe₂ Located in Graphene for Efficient Sodium Storage

Abstract

Na + /Na. For full cells, the cathodes were made of 80 wt% Prussian blue, 10 wt% acetylene black, and 10 wt% poly(vinylidene fuoride) coated on aluminum foil with the thickness of 10 µm. The anodes were activated for three cycles at 200 mA g −1 before assembled full cells.

Synergistic Engineering of Defects and Heterostructures Enhance Lithium/Sodium Storage Properties of F‐SnO2‐x‐SnS2‐x Nanocrystals Supported on N,S‐Graphene

“…[20] The fitting three kinds of N in Figure S4e suggest the presence of pyridinic N (397.8 eV), pyrrolic N (399.5 eV), and graphitic N (401.2 eV). [21] In Figure S4f, a significant weight loss from 350 to 512.5°C of F-SnO 2 @N/S-RGO can be attributed to the combustion of N/S-RGO in air, and the content of N/S-RGO in F-SnO 2 @N/S-RGO is 35.0 %. Therefore, the content of F-SnO 2-x -SnS 2-x in F-SnO 2-x -SnS 2x @N/S-RGO sample is 65.0 %.…”

CoPSe: A New Ternary Anode Material for Stable and High‐Rate Sodium/Potassium‐Ion Batteries

“…Transition metal sulfides/selenides (TMS/TMSe) have emerged as promising electrode candidates for SIBs and PIBs due to their high theoretical specific capacity, diverse electronic properties, and low cost. [6] Extensive effort has been devoted to improving the electrochemical Na/K-storage performance of TMS/TMSe electrodes by multiple-phase combination [7][8][9] cation doping, [10,11] nanostructure optimization, [12][13][14][15][16] carbon modification, [17][18][19] and working voltage regulation. [20] In particular, constructing singlephase ternary materials which exert atomic-level interface engineering and electric-field effect has been expected as an effective strategy to promote the electrochemical performance.…”

Recent progress in metal–organic framework/graphene-derived materials for energy storage and conversion: design, preparation, and application

“…13e). 84 The hybrid delivered a high rate capability of 224.4 mA h g À1 at 10 A g À1 (Fig. 13f) and extraordinary cycling performance that preserved 319.4 mA h g À1 aer 1800 cycles at 1 A g À1 , much higher than the performance of the single component (Fig.…”

“…81 Moreover, the in situ growth strategy has been employed in many other reports (Table 1). [82][83][84][85][86][87][88][89][90][91][92][93][94] The selection of solvents is an important factor in controlling the in situ growth rate and structure of MOFs. Due to the difference of ion movement and growth kinetics in different solvents, the sandwiched structure of ZIF-GO-ZIF composites can be synthesized in water instead of the coated structure in methanol, which provides a slower rate of ion depletion.…”

“…Excitingly, it delivered an extraordinary rate performance (84 mA h g À1 at 25C) and long-term cycling stability (90% capacity retention aer 1000 cycles at 10C), which was attributed to the highly efficient electron and ion transport in the whole electrode. 38 Furthermore, MOF/graphene-derived nanocomposites, especially suldes, 60,63,70,72,76,145,150 selenides, 84,87 and phosphides, 91,111,170 are widely studied for SIBs, due to their environmental benignity and higher theoretical specic capacities based on conversion reactions.…”