Tracking the Chemical and Structural Evolution of the TiS 2 Electrode in the Lithium-Ion Cell Using Operando X-ray Absorption Spectroscopy

doi:10.1021/acs.nanolett.8b01680

淡江大學機構典藏 > 理學院 > 物理學系暨研究所 > 期刊論文 > Item 987654321/117036

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/117036

题名:	Tracking the Chemical and Structural Evolution of the TiS 2 Electrode in the Lithium-Ion Cell Using Operando X-ray Absorption Spectroscopy
作者:	Zhang, Liang;Sun, Dan;Kang, Jun;Wang, Hsiao-Tsu;Hsieh, Shang-Hsien;Way-Faung Pong, etc.
关键词:	Lithium ion batteries;TiS2;electronic structure;in situ and operando;X-ray absorption spectroscopy
日期:	2018-06
上传时间:	2019-09-17 12:12:40 (UTC+8)
摘要:	As the lightest and cheapest transition metal dichalcogenide, TiS2 possesses great potential as an electrode material for lithium batteries due to the advantages of high energy density storage capability, fast ion diffusion rate, and low volume expansion. Despite the extensive investigation of its electrochemical properties, the fundamental discharge–charge reaction mechanism of the TiS2 electrode is still elusive. Here, by a combination of ex situ and operando X-ray absorption spectroscopy with density functional theory calculations, we have clearly elucidated the evolution of the structural and chemical properties of TiS2 during the discharge–charge processes. The lithium intercalation reaction is highly reversible and both Ti and sulfur are involved in the redox reaction during the discharge and charge processes. In contrast, the conversion reaction of TiS2 is partially reversible in the first cycle. However, Ti—O related compounds are developed during electrochemical cycling over extended cycles, which results in the decrease of the conversion reaction reversibility and the rapid capacity fading. In addition, the solid electrolyte interphase formed on the electrode surface is found to be highly dynamic in the initial cycles and then gradually becomes more stable upon further cycling. Such understanding is important for the future design and optimization of TiS2 based electrodes for lithium batteries.
關聯:	Nano Letters 18(7). p.4506-4515
DOI:	10.1021/acs.nanolett.8b01680
显示于类别:	[物理學系暨研究所] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	113	检视/开启
Tracking the Chemical and Structural Evolution of the TiS 2 Electrode in the Lithium-Ion Cell Using Operando X-ray Absorption Spectroscopy.pdf		3627Kb	Adobe PDF	2	检视/开启

在機構典藏中所有的数据项都受到原著作权保护.

TAIR相关文章

数据加载中.....