Three-dimensionally ordered macro-/mesoporous carbon loading sulfur as high-performance cathodes for lithium/sulfur batteries

Nanostructured Sulfur and Sulfides for Advanced Lithium/Sulfur Cells

“…For this reason, previous works employing sulfur-macroporous carbon composite in the sulfur electrode intended to add micro-or mesopores to macroporous carbon in order to prevent the decay of cell capacity while improving sulfur loading and sulfur utilization. [47][48][49] For instance, J. S. Lee et al reported a sulfuractivated porous carbon nanotube composite (a-PCNT) prepared by a facile method of dual-nozzle co-electrospinning and a chemical redox process. [47] The sulfur-a-PCNT composite with sulfur content of 75 wt.% was employed as an active material and the electrode exhibited a retained capacity of 917 mAh/gS after 300 cycles (sulfur mass loading: 4.6 mg/cm 2 ), which is attributed to the hydroxyl group aided micropores and sufficient electrolyte penetration into the macroporous channel structure.…”

“…Larger pores provide better accessibility of sulfur (during infiltration of sulfur into porous carbon) or electrolyte (after Li/S cell assembly) into the interior of the porous carbon, however, sulfur in the sulfur‐macroporous carbon composite tends to be less confined and secured compared to micro‐ or meso‐ porous carbons. For this reason, previous works employing sulfur‐macroporous carbon composite in the sulfur electrode intended to add micro‐ or mesopores to macroporous carbon in order to prevent the decay of cell capacity while improving sulfur loading and sulfur utilization . For instance, J. S. Lee et al.…”

Simple fabrication of Ni nanodots decorated Ni/Ketjen black composite for sulfur host in lithium‐sulfur battery

“…[5][6][7][8][9][10] Cathode materials have been widely investigated recently due to their important role in inhibiting the shuttle effect. 11 Among them, carbonaceous materials mostly serve as active sulfur carriers for LSBs due to their excellent properties, low cost, and rich structure, 12,13 for instance, carbon black, 14 carbon nanotubes, 15 carbon nanofibers, 16 graphene, 17 porous carbon, 18,19 etc. However, there is only a simple physical adsorption between these non-polar carbonaceous carriers and LiPSs, which is hard to limit the shuttle effect of soluble LiPSs, especially for the high S loading cathode.…”

A Bio‐Inspired Structurally‐Responsive and Polysulfides‐Mobilizable Carbon/Sulfur Composite as Long‐Cycling Life Li−S Battery Cathode

“…[8][9][10] Many efforts have been contributed to construct efficient structures for accommodating the volumechange, and improve the conductivity of sulfur which exhibits an intrinsically poor capability of electron transfer. [11][12][13][14][15] Recently, biomimetic science has been introduced to the energy-storage fields since many natural morphologies would provide a new possibility for optimizing the electrode of secondary batteries. [16][17][18] For example, Huang et al prepared a biomimetic root-like TiN/C@S nanofiber as a LiÀ S battery cathode, which showed a capacity of 685 mAh g À 1 at 0.2 C after 300 cycles.…”

“…Similar to the volume‐change issue of several Li‐ion anodes, the sulfur cathodes in Li−S batteries exhibit a large volume‐change of 80 % upon lithiation . Many efforts have been contributed to construct efficient structures for accommodating the volume‐change, and improve the conductivity of sulfur which exhibits an intrinsically poor capability of electron transfer . Recently, biomimetic science has been introduced to the energy‐storage fields since many natural morphologies would provide a new possibility for optimizing the electrode of secondary batteries .…”