Abstract The practical application of Li–S batteries is severely restricted by limited cycle life and low sulfur loading. Here, a common industrial paint, methylated amino resin (MAR), was employed as a novel multifunctional binder to address these issues. The S cathodes by using MAR binder (S@MAR) demonstrate an excellent reversible capacity of 480.9 mA·h·g −1 after 400 cycles at a rate of 0.5 C, and the sulfur loading in the electrode could achieve as high as 3.0 mg·cm −2 . These achievements are ascribed to the superior mechanical property for volume expansion, better adsorption ability toward polysulfides, and more favorable Li + transportation of MAR, compared to the conventional binders of polyvinylidene difluoride and carboxymethylcellulose. This study paves a new way for obtaining high-energy-density Li–S batteries by the simple application of multifunctional binder that are inherently cost-effective. Graphic abstract

中文翻译：

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利用甲基化氨基树脂作为高性能锂硫电池的多功能粘合剂

摘要 有限的循环寿命和低硫负载严重限制了锂硫电池的实际应用。在这里，一种常见的工业涂料甲基化氨基树脂 (MAR) 被用作一种新型多功能粘合剂来解决这些问题。使用 MAR 粘合剂 (S@MAR) 的 S 正极在 0.5 C 倍率下循环 400 次后表现出 480.9 mA·h·g -1 的优异可逆容量，并且电极中的硫负载量可高达 3.0 mg ·cm -2 。与传统的聚偏二氟乙烯和羧甲基纤维素粘合剂相比，这些成就归因于优异的体积膨胀机械性能、更好的多硫化物吸附能力以及更有利的 MAR 锂离子传输。该研究为通过简单应用具有成本效益的多功能粘合剂来获得高能量密度锂硫电池铺平了道路。图形摘要