Co-MOF as Stress-Buffered Architecture: An Engineering for Improving the Performance of NiS/SnO2 Heterojunction in Lithium Storage,Advanced Energy Materials

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Co-MOF as Stress-Buffered Architecture: An Engineering for Improving the Performance of NiS/SnO2 Heterojunction in Lithium Storage
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2023-05-24 , DOI: 10.1002/aenm.202300413
Ning Zhang ₁ , Qianqian Meng ₁ , Hongyu Wu ₁ , Xin Hu ₁ , Mengmeng Zhang ₁ , Anbin Zhou ₁ , Yuetong Li ₁ , Yongxin Huang _{1,

2} , Li Li _{1,

2,

3} , Feng Wu _{1,

2,

3} , Renjie Chen _{1,

2,

3}

Affiliation

Heterostructures with interfacial effects have exhibited great potential for improving the electrochemical kinetics of electrode materials. However, the application of heterostructures is hampered by complicated synthesis parameters and numerous single components. Herein, a multiple-templating synthesis strategy is proposed to improve the interfacial effect of heterojunction composites, mitigate volume variation upon lithiation/de-lithiation, and increase interfacial compatibility with poly-oxyethylene-based (PEO-based) electrolytes. Benefiting from the structural and compositional superiorities, the novel NiS/SnO₂/MOF (NSM) electrode achieves superior electrochemical performance with exceptional specific capacity, outstanding rate capability and ultralong cyclability. As a result of the compatibility between organic components and the porous properties of metal organic frameworks (MOFs), the NSM electrode exhibits greater interfacial compatibility with PEO-based solid-state electrolytes. This work not only describes a meticulous protocol for heterostructured high-performance electrode materials, but also provides a new insight to enhance the connectivity between the interfaces of solid-state batteries.

中文翻译：

Co-MOF 作为应力缓冲架构：提高 NiS/SnO2 异质结在锂存储中性能的工程

具有界面效应的异质结构在改善电极材料的电化学动力学方面表现出巨大的潜力。然而，复杂的合成参数和众多的单一成分阻碍了异质结构的应用。在此，提出了一种多模板合成策略来改善异质结复合材料的界面效应，减轻锂化/脱锂时的体积变化，并提高与聚氧乙烯基（PEO基）电解质的界面相容性。得益于结构和成分的优势，新型 NiS/SnO ₂/MOF (NSM) 电极具有卓越的比容量、出色的倍率性能和超长循环性能，实现了卓越的电化学性能。由于有机成分之间的相容性和金属有机骨架（MOF）的多孔特性，NSM电极与基于PEO的固态电解质表现出更好的界面相容性。这项工作不仅描述了异质结构高性能电极材料的细致协议，而且为增强固态电池界面之间的连接性提供了新的见解。

更新日期：2023-05-24

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