Three-dimensional carbon/ZnO nanomembrane foam as an anode for lithium-ion battery with long-life and high areal capacity
Three-dimensional carbon/ZnO nanomembrane foam as an anode for lithium-ion battery with long-life and high areal capacity
复制标题
三维碳/ZnO纳米膜泡沫作为长寿命和高面积容量锂离子电池负极
DOI：
10.1039/c8ta00940f
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发表时间：
2018-04
期刊：
影响因子：
--
通讯作者：
Y. F. Mei
中科院分区：
文献类型：
--
作者：
Y. T. Zhao;G. S. Huang;Y. L Li;R. Edy;P. B. Gao;H. Tang;Z. H. Bao;Y. F. Mei
本文提出了一种三维碳/ZnO纳米膜复合泡沫（C/ZnO纳米泡沫）电极结构设计，以在实际质量负载下获得高度稳定的面积容量。该复合材料由三维互连的泡沫碳与二维ZnO NMs锚定组成，无需额外添加剂即可直接用作锂离子电池的阳极。泡沫碳的大表面积和高孔隙率导致ZnO负载高达3-4 mg cm−2。ZnO纳米粒子的柔韧性、在三维复合材料结构中有效的电子和离子传递以及泡沫碳的容量增强了复合材料的面积容量和稳定性。因此，合成阳极在2 A g−1下循环700次和在5 A g−1下循环500次后仍保持92%的容量，并表现出4.3 mA h cm−2的显着面容量。该方法及其复合结构在许多需要高储能容量的领域具有重要的潜在应用价值。
Herein, an electrode architecture design using three-dimensional carbon/ZnO nanomembrane composite foam (C/ZnO NM foam) was proposed to achieve highly stable areal capacity at a practical mass loading. The composite, consisting of three-dimensional interconnected carbon foam anchored with two-dimensional ZnO NMs, was directly used as an anode of a lithium-ion battery without additional additives. The large surface area and high porosity of the carbon foam lead to a high ZnO loading of 3–4 mg cm−2. The flexibility of the ZnO NMs, effective electronic and ionic transport throughout the three-dimensional composite structure, and capacity from the carbon foam enhance the areal capacity and stability of the composite. Thus, the synthesized anode retains 92% capacity after 700 cycles at 2 A g−1 and after 500 cycles at 5 A g−1 and manifests a remarkable areal capacity of 4.3 mA h cm−2. The proposed approach and the composite structure produced in this study may have important potential applications in many fields requiring high energy storage capacity.
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