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首页> 外文期刊>RSC Advances >Ni-enhanced Co3O4 nanoarrays grown in situ on a Cu substrate as integrated anode materials for high-performance Li-ion batteries
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Ni-enhanced Co3O4 nanoarrays grown in situ on a Cu substrate as integrated anode materials for high-performance Li-ion batteries

机译：镍增强的Co3O4纳米阵列在铜基板上原位生长，作为高性能锂离子电池的集成阳极材料

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摘要

A two-step strategic approach was proposed to synthesize three-dimensional Co3O4 nanoarrays fabricated on a Cu substrate surface with a Ni layer as the interface. Firstly, a Ni-nanoseed-layer was prepared on a Cu substrate by electrodepositing Ni. And then Co3O4 nanoarrays were in situ grown on the Ni layer via a hydrothermal synthesis. The as-obtained materials were used directly as anodes for Li-ion batteries, and the electrodes maintained a high capacity up to 1150 mA h g(-1) at 0.1 C after 30 cycles, and showed an excellent cycling stability and rate capability. The good electrochemical performance is owing to the pre-electrodeposited Ni-nanoseed-layer, because the Ni layer could improve the mechanical adhesion between Co3O4 nanoarrays and substrates effectively and increase the conductivity of anodes, without applying binders or conductive additives. This strategic in situ synthesis method will probably open a new avenue for the development of integrated electrode materials for high-performance Li-ion batteries.
机译：提出了两步战略方法来合成在以Ni层为界面的Cu衬底表面上制造的三维Co3O4纳米阵列。首先，通过电沉积Ni在Cu衬底上制备Ni-纳米层。然后通过水热合成法在Ni层上原位生长Co3O4纳米阵列。所获得的材料直接用作锂离子电池的阳极，电极在30个循环后于0.1 C时可维持高达1150 mA h g（-1）的高容量，并显示出出色的循环稳定性和倍率性能。良好的电化学性能归因于预电沉积的Ni-纳米糖层，因为Ni层可以有效地提高Co3O4纳米阵列与基板之间的机械粘合力，并增加阳极的电导率，而无需使用粘合剂或导电添加剂。这种战略性的原位合成方法可能会为高性能锂离子电池集成电极材料的开发开辟新的途径。

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