Pre-intercalated Sodium Ions Enhance Sodium Storage of MoS2 Anode by Mitigating Structural Dissociation

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Nano Letters Pub Date : 2025-01-25 DOI:10.1021/acs.nanolett.4c05645

Mingjun Cen, Rui Yan, Xinyu Luo, Huibin Liu, Bin Chen, Shuya Zhang, Wenchao Peng, Yang Li, Qicheng Zhang, Xiaobin Fan

{"title":"Pre-intercalated Sodium Ions Enhance Sodium Storage of MoS2 Anode by Mitigating Structural Dissociation","authors":"Mingjun Cen, Rui Yan, Xinyu Luo, Huibin Liu, Bin Chen, Shuya Zhang, Wenchao Peng, Yang Li, Qicheng Zhang, Xiaobin Fan","doi":"10.1021/acs.nanolett.4c05645","DOIUrl":null,"url":null,"abstract":"Molybdenum disulfide (MoS2) is a promising anode for sodium-ion batteries (SIBs) due to its high theoretical capacity and layered structure. However, a poor reversible conversion reaction and a low initial Coulombic efficiency (ICE) limit its practical application. This study systematically investigated the potential of pre-intercalated sodium ions molybdenum disulfide (Na-MoS2) as an anode material for SIBs. Because of the mitigation of MoS2 structural dissociation and effective replenishment of active sodium ions, Na-MoS2 delivered an outstanding capacity of 507.7 mAh g–1 after 2000 cycles at 5 A g–1, along with an ICE of 95.30%. Pre-intercalating sodium ions can expand interlayer spacing and modulate electronic structure, allowing Na-MoS2 to have greater tolerance to the electrochemical intercalation/extraction process. Furthermore, the conversion reaction of Na-MoS2 has a higher Gibbs free energy, implying its structural dissociation is thermodynamically unfavorable. This work provides a new perspective on the study of transition metal dichalcogenide electrode materials for SIBs.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"38 1","pages":""},"PeriodicalIF":9.6000,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Letters","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acs.nanolett.4c05645","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Molybdenum disulfide (MoS₂) is a promising anode for sodium-ion batteries (SIBs) due to its high theoretical capacity and layered structure. However, a poor reversible conversion reaction and a low initial Coulombic efficiency (ICE) limit its practical application. This study systematically investigated the potential of pre-intercalated sodium ions molybdenum disulfide (Na-MoS₂) as an anode material for SIBs. Because of the mitigation of MoS₂ structural dissociation and effective replenishment of active sodium ions, Na-MoS₂ delivered an outstanding capacity of 507.7 mAh g^–1 after 2000 cycles at 5 A g^–1, along with an ICE of 95.30%. Pre-intercalating sodium ions can expand interlayer spacing and modulate electronic structure, allowing Na-MoS₂ to have greater tolerance to the electrochemical intercalation/extraction process. Furthermore, the conversion reaction of Na-MoS₂ has a higher Gibbs free energy, implying its structural dissociation is thermodynamically unfavorable. This work provides a new perspective on the study of transition metal dichalcogenide electrode materials for SIBs.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

求助全文

约1分钟内获得全文去求助

来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.