Long-Cycling Lithium–Sulfur Batteries Enabled by Reactivating Inactive Lithium

IF 19.3 1区材料科学 Q1 CHEMISTRY, PHYSICAL

ACS Energy Letters Pub Date : 2024-12-19 DOI:10.1021/acsenergylett.4c03177

Li-Ling Su, Mu-Xuan Wu, Shu-Yu Sun, Chen-Xi Bi, Zhao Zheng, Meng Zhao, Bo-Quan Li, Xue-Qiang Zhang, Jia-Qi Huang

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Abstract

High-energy-density lithium–sulfur (Li–S) batteries are attractive but hindered by short cycle life. The formation and accumulation of inactive Li deteriorate the battery stability. Herein, a phenethylamine (PEA) additive is proposed to reactivate inactive Li in Li–S batteries with encapsulating lithium-polysulfide electrolytes (EPSE) without sacrificing the battery Coulombic efficiency (CE). PEA undergoes reactions with inactive Li to form organic polysulfide R-LiPEA in a reduction state at the anode side and subsequently reacts with the S cathode to generate O-LiPEA in an oxidation state. R-LiPEA and O-LiPEA engage in redox cycles to reactivate inactive Li that accumulates in batteries. Compared with 122 cycles based on EPSE without PEA, Li–S batteries with PEA additive in EPSE achieve 185 cycles under demanding conditions and maintain higher CE of 96% with PEA than 93% without PEA. This work elucidates the ingenious modification of amino-based additives to reactivate inactive Li by an organic polysulfide redox mechanism for advanced Li–S batteries.

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来源期刊

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.