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首页> 外文期刊>Nanotechnology >Atomic-layer-deposition alumina induced carbon on porous NixCo1-xO nanonets for enhanced pseudocapacitive and Li-ion storage performance
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Atomic-layer-deposition alumina induced carbon on porous NixCo1-xO nanonets for enhanced pseudocapacitive and Li-ion storage performance

机译：原子层沉积氧化铝诱导的碳在多孔NixCo1-xO纳米网上的行为，以增强伪电容和锂离子存储性能

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摘要

A unique composite nanonet of metal oxide@carbon interconnected sheets is obtained by atomic layer deposition (ALD)-assisted fabrication. In this nanonet structure, mesoporous metal oxide nanosheets are covered by a layer of amorphous carbon nanoflakes. Specifically, quasi-vertical aligned and mesoporous NixCo1-xO nanosheets are first fabricated directly on nickel foam substrates by a hydrothermal method. Then, an ALD-enabled carbon coating method is applied for the growth of carbon nanoflakes on the surface of the nanosheets. The thus formed 3D hierarchical structure of NixCo1-xO@carbon composite flakes have a higher surface area, better electrical conductivity and structure stability than the bare NixCo1-xO. The application of such composite nanomaterials is demonstrated as electrodes for a supercapacitor and a lithium-ion battery. In both tests, the composite electrode shows enhancement in capacity and cycling stability. This effective composite nanostructure design of metal oxides@carbon flakes could provide a promising method to construct high-performance materials for energy and environment applications.
机译：通过原子层沉积（ALD）辅助制造获得了金属氧化物@碳互连板的独特复合纳米网。在这种纳米结构中，中孔金属氧化物纳米片被无定形碳纳米薄片层覆盖。具体而言，首先通过水热法直接在泡沫镍镍上制备准垂直取向和介孔的NixCo1-xO纳米片。然后，将启用ALD的碳涂层方法应用于纳米片表面上碳纳米薄片的生长。这样形成的NixCo1-xO @碳复合薄片的3D分层结构比裸NixCo1-xO具有更高的表面积，更好的电导率和结构稳定性。证明了这种复合纳米材料作为超级电容器和锂离子电池的电极的应用。在这两个测试中，复合电极均显示出容量和循环稳定性的增强。金属氧化物@碳薄片的这种有效的复合纳米结构设计可以为构建用于能源和环境应用的高性能材料提供有前途的方法。

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