Synergistic effect between PPy:PSS copolymers and biomass-derived activated carbons: a simple strategy for designing sustainable high-performance Li–S batteries

Abstract

An activated carbon from the seed of an avocado, a fruit highly and increasingly demanded by consumers, has been used as a sulfur host for lithium sulfur (Li–S) batteries. Although...

Diffusional Features of a Lithium‐Sulfur Battery Exploiting Highly Microporous Activated Carbon

“…For a proper comparison, the graphs in Figure 7a, Figure 7b and Figure 7c take into account the four SOC discussed previously, that is, upon first and second reduction processes (1 and 2 in inset) and after the two charge stages (3 and 4 in inset) for CV, EIS and GITT, respectively. Relevantly, the figure shows the dependence of D Li + trends and values on the employed technique: hence, D CV ranges between 10 À 7 and 10 À 8 cm 2 s À 1 , as indeed observed in previous reports, [90,91] while D EIS varies with one order of magnitude lower range between 10 À 8 and 10 À 9 cm 2 s À 1 , and D GITT surprisingly shows a much wider interval between 10 À 6 and 10 À 12 cm 2 s À 1 . This notable variability may be ascribed to intrinsic characteristics of the various techniques, as observed in a previous work focusing on insertion materials.…”

Nitrogen/sulfur dual-doped micro-mesoporous hierarchical porous carbon as host for Li-S batteries

“…Porous carbon are broadly applied to enhance the capability of Li-S batteries by adjusting pore structure, surface chemistry and other properties. Extensive literature reports have indicated that the polysulfide dissolution can be inhibited by increasing the contact between sulfur and conductive matrix by employing porous carbon materials having large surface area ( Luna-Lama et al, 2022 ; Ma et al, 2022 ). Depending on the size of the pores, there can be three types of porous carbon namely, macroporous, microporous and mesoporous with each having different effect on the Li-S batteries.…”

Recent advances and perspectives in conductive-polymer-based composites as cathode materials for high-performance lithium–sulfur batteries

“…E-mail: liuyong209@haust.edu.cn; zhangwh@haust. edu.cn cathodes, [40][41][42][43][44][45][46][47][48][49]260 insertion of an interlayer between the cathode and separator, [50][51][52][53] and optimization of the electrolyte. [54][55][56] Among them, sulfur cathode modication has received substantial attention because it increases the conductivity of the sulfur cathode, connes LiPSs in the cathode, and alleviates the volume expansion of the sulfur cathode during cycling.…”