Cyanogel-derived formation of 3D nanoporous SnO2-MxOy (M= Ni, Fe, Co) hybrid networks for high-performance lithium storage
Cyanogel-derived formation of 3D nanoporous SnO2-MxOy (M= Ni, Fe, Co) hybrid networks for high-performance lithium storage
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氰凝胶衍生的 3D 纳米多孔 SnO2-MxOy（M= Ni、Fe、Co）混合网络的形成，用于高性能锂存储
DOI：
10.1002/cssc.201402829
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发表时间：
2015
期刊：
影响因子：
8.4
通讯作者：
Lu Tianhong
中科院分区：
文献类型：
--
作者：
Zhu Qingyun;Wu Ping;Zhang Jinjing;Zhang Weiyu;Zhou Yiming;Tang Yawen;Lu Tianhong
三维（3D）纳米多孔SnO 2-MxOy（M=Fe、Co、Ni、Cu等）混合网络具有独特的组成和结构特征，有利于锂存储，因此预计将满足用于运输和固定能量存储的先进锂离子电池的性能要求。在此，首次开发了一种用于构建3D纳米多孔SnO 2-MxOy杂化网络的简便，可扩展和通用的氰基凝胶衍生方法。以Sn-M氰凝胶为前驱体，制备了SnO 2-NiO、SnO 2-α-Fe 2 O3和SnO 2-NiO-Co 3 O 4三维纳米多孔网络.此外，检查了3D纳米多孔SnO 2-NiO混合网络的阳极性能以证明概念的证明。在用聚吡咯衍生的碳涂覆后，SnO 2-NiO@C混合网络在比容量、循环稳定性和倍率性能方面表现出优异的上级储锂能力。
Three‐dimensional (3 D) nanoporous SnO2–MxOy(M=Fe, Co, Ni, Cu, etc.) hybrid networks possess unique compositional and structural features that are beneficial to lithium storage and are thus anticipated to meet the performance requirements of advanced lithium‐ion batteries for transportation and stationary energy storage. Herein, a facile, scalable, and versatile cyanogel‐derived method for the construction of 3 D nanoporous SnO2–MxOyhybrid networks was developed for the first time. The formation of 3 D nanoporous SnO2–NiO, SnO2–α‐Fe2O3, and SnO2–NiO–Co3O4hybrid networks was illustrated by using Sn–M cyanogels as precursors. Moreover, the anodic performance of the 3 D nanoporous SnO2–NiO hybrid network was examined to demonstrate proof of concept. After coating with polypyrrole‐derived carbon, the SnO2–NiO@C hybrid network exhibited superior lithium‐storage capabilities in terms of specific capacity, cycling stability, and rate capability.