Enhancing cycling stability in Li-rich layered oxides by atomic layer deposition of LiNbO3 nanolayers

IF 3 4区 材料科学 Q3 CHEMISTRY, PHYSICAL Solid State Ionics Pub Date : 2024-11-05 DOI:10.1016/j.ssi.2024.116727
{"title":"Enhancing cycling stability in Li-rich layered oxides by atomic layer deposition of LiNbO3 nanolayers","authors":"","doi":"10.1016/j.ssi.2024.116727","DOIUrl":null,"url":null,"abstract":"<div><div>Lithium-rich layered oxides (LROs), serving as high-energy cathode materials for lithium-ion batteries (LIBs), possess significant drawbacks that hinder their widespread use in practical applications. While surface modification can effectively shield LRO from structural degradation, precisely designing the surface structure remains a big challenge. This study focuses on the fabrication of uniform and thickness-controlled LiNbO<sub>3</sub>-coated nanostructures on the surface of LRO using the atomic layer deposition (ALD) technique. The LiNbO<sub>3</sub> nanostructures on the cathode surface not only bolster the structural and interfacial stability but also facilitate Li<sup>+</sup> diffusion, enhancing the cycling stability and the rate capability of LRO. Specifically, the LRO modified with a 3 nm thick LiNbO<sub>3</sub> layer exhibited better capacity retention of 86.4 % after 200 cycles at 1C with a voltage decay rate of 2.86 mV per cycle, and a reversible discharge capacity of 88.1 mAh g<sup>−1</sup> at 10C, underscoring the crucial role of surface nanostructures in enhancing electrochemical performance. This research sheds light on the strategic design of nanostructures at the grain surface of advanced cathode materials for high-performance LIBs.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":null,"pages":null},"PeriodicalIF":3.0000,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solid State Ionics","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167273824002753","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0

Abstract

Lithium-rich layered oxides (LROs), serving as high-energy cathode materials for lithium-ion batteries (LIBs), possess significant drawbacks that hinder their widespread use in practical applications. While surface modification can effectively shield LRO from structural degradation, precisely designing the surface structure remains a big challenge. This study focuses on the fabrication of uniform and thickness-controlled LiNbO3-coated nanostructures on the surface of LRO using the atomic layer deposition (ALD) technique. The LiNbO3 nanostructures on the cathode surface not only bolster the structural and interfacial stability but also facilitate Li+ diffusion, enhancing the cycling stability and the rate capability of LRO. Specifically, the LRO modified with a 3 nm thick LiNbO3 layer exhibited better capacity retention of 86.4 % after 200 cycles at 1C with a voltage decay rate of 2.86 mV per cycle, and a reversible discharge capacity of 88.1 mAh g−1 at 10C, underscoring the crucial role of surface nanostructures in enhancing electrochemical performance. This research sheds light on the strategic design of nanostructures at the grain surface of advanced cathode materials for high-performance LIBs.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
通过铌酸锂纳米层的原子层沉积提高富锂层状氧化物的循环稳定性
富锂层状氧化物(LROs)是锂离子电池(LIBs)的高能正极材料,但其显著的缺点阻碍了其在实际应用中的广泛使用。虽然表面改性可以有效防止 LRO 的结构退化,但精确设计表面结构仍然是一个巨大的挑战。本研究的重点是利用原子层沉积(ALD)技术在 LRO 表面制备均匀且厚度可控的 LiNbO3 涂层纳米结构。阴极表面的 LiNbO3 纳米结构不仅增强了结构和界面的稳定性,还促进了 Li+ 的扩散,提高了 LRO 的循环稳定性和速率能力。具体而言,经 3 nm 厚的 LiNbO3 层修饰的 LRO 在 1C 下循环 200 次后的容量保持率为 86.4%,电压衰减率为 2.86 mV/次,在 10C 下的可逆放电容量为 88.1 mAh g-1,这突出表明了表面纳米结构在提高电化学性能方面的关键作用。这项研究揭示了在先进阴极材料晶粒表面设计纳米结构以实现高性能锂离子电池的策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Solid State Ionics
Solid State Ionics 物理-物理:凝聚态物理
CiteScore
6.10
自引率
3.10%
发文量
152
审稿时长
58 days
期刊介绍: This interdisciplinary journal is devoted to the physics, chemistry and materials science of diffusion, mass transport, and reactivity of solids. The major part of each issue is devoted to articles on: (i) physics and chemistry of defects in solids; (ii) reactions in and on solids, e.g. intercalation, corrosion, oxidation, sintering; (iii) ion transport measurements, mechanisms and theory; (iv) solid state electrochemistry; (v) ionically-electronically mixed conducting solids. Related technological applications are also included, provided their characteristics are interpreted in terms of the basic solid state properties. Review papers and relevant symposium proceedings are welcome.
期刊最新文献
Enhancing cycling stability in Li-rich layered oxides by atomic layer deposition of LiNbO3 nanolayers Performance improvement tactics of sensitized solar cells based on CuInS2 quantum dots prepared by high temperature hot injection Synthesis and electrochemical properties of Li+-ion conducting solid electrolytes in the system xLiCl·(25-x)LiBr·75Li3PS4 Investigation of factors enhancing electrochemical properties of the porous La0.6Sr0.4CoO3-δ–Ce0.9Gd0.1O1.95 composite electrode for solid oxide fuel cell Impact of multi-cationic B-sublattice upon crystal structure, transport and electrochemical properties of perovskite oxides LaBO3
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1