Promoting Granular Lithium Sulfide Growth by Soft Acidic–Hard Basic Ionomer Binder for Lithium–Sulfur Batteries

IF 19.3 1区材料科学 Q1 CHEMISTRY, PHYSICAL

ACS Energy Letters Pub Date : 2025-03-13 DOI:10.1021/acsenergylett.4c03522

Hyunseok Moon, Myeong-Hwa Ryou, Anseong Park, Bo-Quan Li, Ha Neul Kim, Namjun Park, Eunbyoul Lee, Kyung Yoon Chung, Jia-Qi Huang, Taeeun Yim, Won Bo Lee, Sang-Young Lee

{"title":"Promoting Granular Lithium Sulfide Growth by Soft Acidic–Hard Basic Ionomer Binder for Lithium–Sulfur Batteries","authors":"Hyunseok Moon, Myeong-Hwa Ryou, Anseong Park, Bo-Quan Li, Ha Neul Kim, Namjun Park, Eunbyoul Lee, Kyung Yoon Chung, Jia-Qi Huang, Taeeun Yim, Won Bo Lee, Sang-Young Lee","doi":"10.1021/acsenergylett.4c03522","DOIUrl":null,"url":null,"abstract":"Electrode passivation limits the reversibility of lithium–sulfur (Li–S) batteries. Pivoting from the prevailing approaches that focus on electrode active materials and electrolytes, herein, we introduce a class of S electrode binders based on soft acidic–hard basic (SAHB) ionomers. The SAHB binder contains a soft cation (tetraallyl ammonium ion, TA+) paired with a hard counteranion (nitrate, NO3–), allowing matched interactions with Li polysulfides (LiPS) via soft acid–soft base (TA+–Sx2–) and hard base–hard acid (NO3––Li+) pairings. This intermolecular coupling retards LiPS diffusion, promoting three-dimensional granular Li sulfide (Li2S) growth, guided by a high Damköhler number (Da). Consequently, the SAHB binder enables a Li–S cell to achieve a high specific capacity of 1545 mAh gsulfur–1 (corresponding to 92.3% S utilization) and stable capacity retention (71.5% after 300 cycles at a current density of 1 C), outperforming previously reported S electrode binders.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"42 1","pages":""},"PeriodicalIF":19.3000,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Energy Letters ","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acsenergylett.4c03522","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Electrode passivation limits the reversibility of lithium–sulfur (Li–S) batteries. Pivoting from the prevailing approaches that focus on electrode active materials and electrolytes, herein, we introduce a class of S electrode binders based on soft acidic–hard basic (SAHB) ionomers. The SAHB binder contains a soft cation (tetraallyl ammonium ion, TA⁺) paired with a hard counteranion (nitrate, NO₃^–), allowing matched interactions with Li polysulfides (LiPS) via soft acid–soft base (TA⁺–S_x^2–) and hard base–hard acid (NO₃^––Li⁺) pairings. This intermolecular coupling retards LiPS diffusion, promoting three-dimensional granular Li sulfide (Li₂S) growth, guided by a high Damköhler number (Da). Consequently, the SAHB binder enables a Li–S cell to achieve a high specific capacity of 1545 mAh g_sulfur^–1 (corresponding to 92.3% S utilization) and stable capacity retention (71.5% after 300 cycles at a current density of 1 C), outperforming previously reported S electrode binders.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

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.