| 标题 |
 Mechanistically Understanding the Correlation Between Dynamic Interface Variation and Stability of Surface Coating on the NMC811 Materials 从机理上理解NMC811材料动态界面变化与表面涂层稳定性之间的相关性
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| 备注 |
Advanced Energy Materials
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| 网址 | |
| DOI | |
| 其它 |
Advanced Energy Materials, Abstract LiNi0.8Co0.1-Mn0.1O2 (NMC811) is widely used in high energy density lithium-ion batteries, while dynamic variation of liquid-solid interface induced by oxygen release/evolution results in unexpected performance decay. Surface coating is an effective strategy in promoting the stability of NMC811 materials, and both coating composition and nanostructure arrangement would substantially impact the dynamic variation of liquid-solid interfaces. To understand such dynamic variation, here evolution and stability of two selected NMC811 materials coated with oxides (the same oxide composition but different nanostructure arrangements) are compared, i.e., concentration uniform core-shell NMC811 (CUCS811) and concentration gradient core-shell NMC811 (CGCS811). The gas evolution from the home-setup operando gas monitors (at 45 and 65 °C) implies that CUCS811 presents more operation and thermal stability |
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