Three-dimensional mesoporous Sn–Ni@C network derived from cyanogel coordination polymers: towards high-performance anodes for lithium storage
Three-dimensional mesoporous Sn–Ni@C network derived from cyanogel coordination polymers: towards high-performance anodes for lithium storage
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DOI：
10.1039/c3ce41647j
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发表时间：
2013-11
期刊：
影响因子：
3.1
通讯作者：
Jianping Li;Ping Wu;Yawen Tang;Xiali Xu;Yiming Zhou;Y. Chen;T. Lu
中科院分区：
文献类型：
--
作者：
Jianping Li;Ping Wu;Yawen Tang;Xiali Xu;Yiming Zhou;Y. Chen;T. Lu
我们提出了一个简单的，可扩展的，但通用的方法，用于形成三维介孔（3x 4）锡基合金阳极的锂离子电池（LIB），首次使用氰凝胶配位聚合物作为前体。以SnCl_4/K_2Ni（CN）_4氰凝胶为前驱体，合成了具有高比表面积和均匀介孔的3Sn-Ni合金网络。在表面碳包覆之后，3Sn-Ni @C网络凭借其独特的结构特征（诸如优异的结构稳定性、高电荷传输能力和改善的锂嵌入/提取反应动力学）而表现出增强的锂储存能力。所提出的合成策略可以为构建用于LIB的先进锡基合金阳极开辟新的机会。
We propose a facile, scalable, yet versatile methodology for the formation of three-dimensional mesoporous (3DMP) tin-based alloy anodes for lithium-ion batteries (LIBs), using cyanogel coordination polymers as precursors for the first time. The synthesis of a 3DMP Sn–Ni alloy network with a high surface area and uniform mesopores has been demonstrated as an example using SnCl4/K2Ni(CN)4 cyanogel as the precursor. After surface carbon coating, the 3DMP Sn–Ni@C network exhibited enhanced lithium storage capabilities by virtue of its unique structural characteristics, such as its excellent structural stability, high charge transport capability, and improved reaction kinetics of lithium insertion/extraction. The proposed synthetic strategy could open up new opportunities for constructing advanced tin-based alloy anodes for LIBs.