Understanding the Effect of Local Short-Range Ordering on Lithium Diffusion in Li1.3Nb0.3Mn0.4O2 Single-Crystal Cathode
文献类型：期刊论文
| ; | |
| 作者 | Kan, WH; Deng, B; Xu, YH; Shukla, AK; Bo, T; Zhang, S; Liu, J; Pianetta, P; Wang, BT ; Liu, YJ
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| 刊名 | CHEM
 ; CHEM
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| 出版日期 | 2018 ; 2018 |
| 卷号 | 4期号:9页码:2108-2123 |
| ISSN号 | 2451-9294 ; 2451-9294 |
| DOI | 10.1016/j.chempr.2018.05.008 ; 10.1016/j.chempr.2018.05.008 |
| 文献子类 | Article ; 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.; 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 ; OF-CHARGE HETEROGENEITY ; X-RAY MICROSCOPY ; PHASE-TRANSFORMATIONS ; REDOX CHEMISTRY ; ION BATTERIES ; VISUALIZATION ; PARTICLES ; ELECTRODE ; OPERANDO ; OXIDES ; X-RAY MICROSCOPY ; PHASE-TRANSFORMATIONS ; REDOX CHEMISTRY ; ION BATTERIES ; VISUALIZATION ; PARTICLES ; ELECTRODE ; OPERANDO ; OXIDES |
| WOS研究方向 | Chemistry ; Chemistry |
| 语种 | 英语 ; 英语 |
| WOS记录号 | WOS:000444488400016 ; WOS:000444488400016 |
| 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 | 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, Understanding the Effect of Local Short-Range Ordering on Lithium Diffusion in Li1.3Nb0.3Mn0.4O2 Single-Crystal Cathode[J]. CHEM, CHEM,2018, 2018,4, 4(9):2108-2123, 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. |
入库方式： OAI收割
来源：高能物理研究所
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