| 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; Chen, GY; Jian HX(简宏希); Bo T(薄涛); Wang BT(王保田) | |
| 2018 | |
| Source Publication | CHEM
 |
| ISSN | 2451-9294 |
| Volume | 4Issue:9Pages:2108-2123 |
| Subtype | Article |
| Abstract | 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. |
| DOI | 10.1016/j.chempr.2018.05.008 |
| WOS Keyword | OF-CHARGE HETEROGENEITY ; X-RAY MICROSCOPY ; PHASE-TRANSFORMATIONS ; REDOX CHEMISTRY ; ION BATTERIES ; VISUALIZATION ; PARTICLES ; ELECTRODE ; OPERANDO ; OXIDES |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Multidisciplinary |
| WOS ID | WOS:000444488400016 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ihep.ac.cn/handle/311005/286320 |
| Collection | 东莞研究部 |
| Affiliation | 中国科学院高能物理研究所 |
| First Author Affilication | Institute of High Energy |
| Recommended Citation 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.,...&王保田.(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. |
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