Natural Polyphenol-Reinforced Ion-Selective Separators for High-Performance Lithium-Sulfur Batteries with High Sulfur Loading and Lean Electrolyte.

IF 19.3 1区 材料科学 Q1 CHEMISTRY, PHYSICAL ACS Energy Letters Pub Date : 2024-10-30 DOI:10.1002/anie.202417031
Yanfei Yang, Wankai Wang, Junping Zhang
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Abstract

Ion-selective separators are promising to inhibit soluble intermediates shuttle in practical lithium-sulfur (Li-S) batteries. However, designing and fabricating such high-performance ion-selective separators using cost-effective, eco-friendly, and versatile methods remains a formidable challenge. Here we present ion-selective separators fabricated via the spontaneous deposition of green tea-derived polyphenols onto a polypropylene separator, aimed at enhancing the stability of Li-S batteries. The resulting natural polyphenol-reinforced ion-selective (NPRIS24) separators exhibit rapid Li ion transport and high soluble intermediates inhibition capability with an ultralow shuttle rate of 0.67 % for Li2S4, 0.19 % for Li2S6 and 0.10 % for Li2S8. This superior ion-selectivity arises from the high electronegativity and strong lithiophilic nature of the phenolic compounds. Consequently, we have achieved high-performance Li-S batteries that are steadily cyclable under the challenging conditions of an S loading of 5.7 mg cm-2, an electrolyte-to-S ratio of 5.1 μL mg-1, and a 50 μm Li foil anode. Furthermore, the NPRIS24 separator enhances the performance of other Li metal batteries utilizing commercial LiFePO4 (5.3 mg cm-2) and LiNi0.5Co0.2Mn0.3O2 (9.9 mg cm-2) cathodes. This work underscores the potential of utilizing natural polyphenols for the design of advanced ion-selective separators in energy storage systems.

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天然多酚增强型离子选择性分离器用于高硫负荷和贫电解质的高性能锂硫电池。
离子选择性分离器有望抑制可溶性中间体在实用锂硫(Li-S)电池中穿梭。然而,采用经济、环保和多功能的方法设计和制造这种高性能离子选择性分离器仍然是一项艰巨的挑战。在此,我们介绍了通过在聚丙烯隔膜上自发沉积绿茶多酚而制造的离子选择性隔膜,旨在提高锂-S 电池的稳定性。由此产生的天然多酚增强型离子选择性隔膜(NPRIS24)具有快速的锂离子传输和较高的可溶性中间体抑制能力,对 Li2S4 的穿梭率极低,仅为 0.67%,对 Li2S6 为 0.19%,对 Li2S8 为 0.10%。这种优异的离子选择性源于酚类化合物的高电负性和强亲锂性。因此,我们实现了高性能的锂-S 电池,在 S 负载为 5.7 mg cm-2、电解液与 S 的比率为 5.1 μL mg-1 和 50 μm 锂箔阳极的苛刻条件下,电池仍能稳定循环。此外,NPRIS24 分离器还提高了使用商用 LiFePO4(5.3 mg cm-2)和 LiNi0.5Co0.2Mn0.3O2(9.9 mg cm-2)阴极的其他锂金属电池的性能。这项工作强调了利用天然多酚设计储能系统中先进离子选择性分离器的潜力。
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来源期刊
ACS Energy Letters
ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment
CiteScore
31.20
自引率
5.00%
发文量
469
审稿时长
1 months
期刊介绍: ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format. ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology. The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.
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