ArticleSmall (Weinheim an der Bergstrasse, Germany)2026
Synergizing Polysulfide Trapping and Fast Ion Kinetics Enabled by Poly(Acrylamide-co-Lithium Acrylate) Aqueous Binder for High-Sulfur-Loading Lithium-Sulfur Batteries.
Article in Small (Weinheim an der Bergstrasse, Germany), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Although lithium-sulfur (Li-S) batteries offer high theoretical energy density, their practical implementation is impeded by the polysulfide shuttle effect and mechanical disintegration of sulfur cathodes, particularly under high-sulfur-loading conditions. To overcome these limitations, a multifunctional aqueous binder, poly(acrylamide-co-lithium acrylate) (AmLA), is proposed to synergistically enhance electrode integrity and suppress lithium polysulfide (LiPS) migration. The copolymer architecture integrates polar amide and lithium carboxylate groups, which establish a robust hydrogen-bonding network for mechanical stability while simultaneously providing strong chemical anchoring sites for LiPS confinement. In situ UV-visible spectroscopy corroborates the significant retardation of LiPS dissolution, confirming the suppression of shuttle reactions. Consequently, AmLA-based sulfur cathodes exhibit superior electrochemical kinetics, delivering a 3.4-fold enhancement in rate capability at 2 C compared to the polyvinylidene fluoride binder. With a high sulfur content of 75 wt% and an areal loading of 3.2 mg cm
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