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Electrochem 2020, 1 240 Despite the benefits afforded by hollow pore-containing systems, there is some drawback to having such a high sulfur loading due to a lack of ability for all the sulfur to interact with electrolyte. In a recent study, researchers have addressed this by installing rib-like supports within their hollow carbon structure (Figure 12) [55]. Resultant radially-aligned systems have a very well-defined set of pores, facilitating the efficient infusion of sulfur into the channels. To further enhance the propensity of this system to block polysulfide species, nitrogen-doped carbon nanospheres were also employed in such construct. After 1000 cycles Michelle comprising this electrode material displayed a capacity loss of 0.044% per cycle, somewhat higher than in the ZIM-67 materials discussed above. Electrochem 2020, 2, FOR PEER REVIEW 16 Figure 12. Use of silica particles (a) as a scaffold for assembly of hallow carbon nanospheres (b) having Figure 12. Use of silica particles (a) as a scaffold for assembly of hallow carbon nanospheres (b) having silica rib-like fine structure on the interior, as demonstrated in an SEM image (c). Reprinted with silica rib-like fine structure on the interior, as demonstrated in an SEM image (c). Reprinted with permission from reference [55]. Copyright 2020 John Wiley and Sons. permission from reference [55]. Copyright 2020 John Wiley and Sons. AAnnotohtehrerstsutduydysosuoguhgthttoteoxepxloprleortehethiemipmacptaoctf coofmcobminbiningingitrnoigtreong-deno-pdeodpceadrbcoanrbnoannnotaunboetsubines taindteamndwemithwmitehtamlliectaclolbicalctonbanltopnarntoicpleasrt[i5cl6e]s. 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Cells with this electrode do support a high areal capacity of 5.5 mAh cm−2 at a sulfur loading of 5.02 mg cm−2, however.PDF Image | Lithium-Sulfur Batteries: Advances and Trends
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