Abstract Composite nanowires incorporating both metal oxide and metal nanoparticles as the basic building units are attracting much attention recently. We report here a facile approach to synthesize 3D networks of 1D nanowires of formed by both NiO and Ni nanoparticle. The composite nanowires were in-situ synthesized on carbonized eggshell membrane. Here, α-Ni(OH) 2 nanowire precursor was synthesized on eggshell membrane under mild conditions in a diaphragm-assisted reactor first. Then the precursor was transformed into composite of NiO-Ni nanowires on carbonized eggshell membrane under heat treatment in argon. The eggshell membrane played multiple roles as the substrate to collect the α-Ni(OH) 2 nanowire precursor and then as the source of reducing agents to partially reduce Ni 2+ to Ni 0 . When tested for lithium-ion batteries, the composite of 3D networks NiO-Ni nanowires attached on carbonized eggshell membrane demonstrated impressively improved rate and cycling performances, as compared to that of bare NiO nanowires. The idea and method outline here based on bio-inspired synthesis using bio-template to prepare composites could be applied to synthesize other functional materials.

中文翻译：

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用于锂离子电池的碳化蛋壳膜上 NiO-Ni 纳米线 3-D 网络的仿生合成

摘要 近年来，以金属氧化物和金属纳米颗粒为基本构建单元的复合纳米线备受关注。我们在此报告了一种合成由 NiO 和 Ni 纳米颗粒形成的 1D 纳米线的 3D 网络的简便方法。复合纳米线在碳化蛋壳膜上原位合成。在这里，α-Ni(OH) 2 纳米线前体首先在隔膜辅助反应器中在温和条件下在蛋壳膜上合成。然后在氩气中热处理将前驱体转化为碳化蛋壳膜上的 NiO-Ni 纳米线复合材料。蛋壳膜起到多种作用，作为收集α-Ni(OH) 2 纳米线前体的基质，然后作为还原剂的来源，将Ni 2+ 部分还原为Ni 0 。当测试锂离子电池时，与裸 NiO 纳米线相比，附着在碳化蛋壳膜上的 3D 网络 NiO-Ni 纳米线复合材料显示出令人印象深刻的倍率和循环性能。这里基于使用生物模板制备复合材料的仿生合成的想法和方法可以应用于合成其他功能材料。