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

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Understanding the Effect of Local Short-Range Ordering on Lithium Diffusion in Li1.3Nb0.3Mn0.4O2 Single-Crystal Cathode
	Kan, WH ; Deng, B ; Xu, YH ; Shukla, AK ; Bo, T ; Zhang, S ; Liu, J ; Pianetta, P ; Wang, BT ; Liu, YJ
刊名	CHEM
	2018
卷号	4 期号:9 页码:2108-2123
关键词	OF-CHARGE HETEROGENEITY X-RAY MICROSCOPY PHASE-TRANSFORMATIONS REDOX CHEMISTRY ION BATTERIES VISUALIZATION PARTICLES ELECTRODE OPERANDO OXIDES
ISSN号	2451-9294
DOI	10.1016/j.chempr.2018.05.008
文献子类	期刊论文
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.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31162]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Lawrence Berkeley Natl Lab, Energy Storage & Distributed Resources Div, Berkeley, CA 94720 USA 2.Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China 3.SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA 4.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 5.Dongguan Inst Neutron Sci, Dongguan 523808, Peoples R China 6.Stanford Univ, Dept Geol Sci, Stanford, CA 94305 USA
推荐引用方式 GB/T 7714	Kan, WH,Deng, B,Xu, YH,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	Kan, WH.,Deng, B.,Xu, YH.,Shukla, AK.,Bo, T.,...&Chen, GY.(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	Kan, WH,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.