Understanding the Effect of Local Short-Range Ordering on Lithium Diffusion in Li1.3Nb0.3Mn0.4O2 Single-Crystal Cathode

doi:10.1016/j.chempr.2018.05.008

	Understanding the Effect of Local Short-Range Ordering on Lithium Diffusion in Li1.3Nb0.3Mn0.4O2 Single-Crystal Cathode
	Shukla, AK; Wang BT(王保田); Bo T(薄涛); Jian HX(简宏希); Chen, GY; Liu, YJ; Wang, BT; Pianetta, P; Liu, J; Zhang, S
刊名	CHEM
	2018
卷号	4 期号:9 页码:2108-2123
ISSN号	2451-9294
DOI	10.1016/j.chempr.2018.05.008
文献子类	Article
英文摘要	We report the observation of persistent chemical gradient on rock-salt Li1.3Nb0.3Mn0.4O2 single crystals transforming through a second-order reaction and reveal the dominating effect of local chemistry on Li diffusion within the percolated network. By using advanced 2D and 3D nanoscale X-ray spectro-microscopy on well-formed crystal samples, our study visualizes the mesoscale chemical distribution as a function of the state of charge at the subparticle level. We further reveal the presence of thermodynamically favorable short-range ordering of Nb-cation-only (Nb-6) and Nb-cation-enriched (MnNb5) configurations, which promote non-equilibrium diffusion pathways and the expansive chemical heterogeneity observed on LixNb0.3Mn0.4O2 particles. The present study utilizes large single crystals to eliminate the influence of kinetic factors such as particle-size distribution, crystal facet, grain boundary, and strain, allowing us to clearly demonstrate the strong correlation between a material's structural defects and chemical propagation and its crucial impact on electrode performance and stability.
WOS关键词	OF-CHARGE HETEROGENEITY ; X-RAY MICROSCOPY ; PHASE-TRANSFORMATIONS ; REDOX CHEMISTRY ; ION BATTERIES ; VISUALIZATION ; PARTICLES ; ELECTRODE ; OPERANDO ; OXIDES
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:000444488400016
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286320]
专题	高能物理研究所_东莞分部
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Shukla, AK,Wang BT,Bo T,et al. Understanding the Effect of Local Short-Range Ordering on Lithium Diffusion in Li1.3Nb0.3Mn0.4O2 Single-Crystal Cathode[J]. CHEM,2018,4(9):2108-2123.
APA	Shukla, AK.,王保田.,薄涛.,简宏希.,Chen, GY.,...&Kan, WH.(2018).Understanding the Effect of Local Short-Range Ordering on Lithium Diffusion in Li1.3Nb0.3Mn0.4O2 Single-Crystal Cathode.CHEM,4(9),2108-2123.
MLA	Shukla, AK,et al."Understanding the Effect of Local Short-Range Ordering on Lithium Diffusion in Li1.3Nb0.3Mn0.4O2 Single-Crystal Cathode".CHEM 4.9(2018):2108-2123.