2021
DOI: 10.1002/asia.202100176
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Recent Advances of Freestanding Cathodes for Li‐S Batteries

Abstract: Lithium‐sulfur batteries (LSBs) with high energy density and low cost have been recognized as one of the most promising next‐generation energy storage systems. Although it has taken decades of development, the practical application of LSBs has been hindered by several inherent obstacles, particularly the severe shuttle effect and sluggish reaction kinetics in the sulfur cathode. Various strategies have been proposed to address these problems via rational design of electrode materials and configurations. Freest… Show more

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Cited by 5 publications
(2 citation statements)
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“…This greatly limits the sulfur loading of Li-S@PAN batteries against the pursued high energy density. 123,124 Moreover, the use of inactive substances increases the cost of making batteries to some extent. From a long-term perspective, the low energy density and high-cost approach are not in line with the ideal battery that is sought after.…”
Section: Construction Of Freestanding Cathode Structuresmentioning
confidence: 99%
“…This greatly limits the sulfur loading of Li-S@PAN batteries against the pursued high energy density. 123,124 Moreover, the use of inactive substances increases the cost of making batteries to some extent. From a long-term perspective, the low energy density and high-cost approach are not in line with the ideal battery that is sought after.…”
Section: Construction Of Freestanding Cathode Structuresmentioning
confidence: 99%
“…Rechargeable Li–S cells have been conceived as one of highest-potential next-generation power sources to replace current Li-ion batteries (LIBs) due to their superb theoretical energy density of ∼2567 Wh kg –1 . Better still, other merits stemming from S cathodes, including low cost, far superior natural abundance, and being environmentally benign over lithiated transition metal oxides, are also of great significance to developing highly sustained battery systems. , However, it is unfortunate that several intractable problems still stand in the way of the further development of Li–S cells . Except for formidable challenges from the Li anode side (e.g., poor security due to Li dendrite growth and enlarged polarization in deep cycling), there are also critical dynamic issues in S cathodes, such as the negative shuttling effects of long-chain Li polysulfides (Li 2 S n , 2 ≤ n ≤ 8) and the ultralow utilization ratio of bulky S actives together with their volume-expansion-induced cyclic instability. …”
Section: Introductionmentioning
confidence: 99%