当前位置: X-MOL 学术J. Colloid Interface Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Origami and layered-shaped ZnNiFe-LDH synthesized on Cu(OH)2 nanorods array to enhance the energy storage capability
Journal of Colloid and Interface Science ( IF 9.4 ) Pub Date : 2021-09-16 , DOI: 10.1016/j.jcis.2021.09.062
Hucheng Fu 1 , Aitang Zhang 1 , Fuhao Jin 1 , Hanwen Guo 1 , Wenjun Huang 1 , Wenting Cheng 1 , Jingquan Liu 1
Affiliation  

The combination of layered nanorod arrays with unique core–shell structure and transition metal layered double hydroxide (LDH) is considered as a feasible solution to improve the electrochemical performances of capacitor electrode. In this study, layered ZnNiFe-LDH@Cu(OH)2/CF core–shell nanorod arrays, which consist of ultrathin ZnNiFe-LDHs nanosheet shells and ordered Cu(OH)2 nanorod inner cores, are successfully designed and fabricated by a typical hydrothermal way and a simple in situ oxidation reaction. The electrode prepared using ZnNiFe-LDH@Cu(OH)2/CF nanomaterial reveals an remarkable area capacitance of 6100 mF cm−2 at 3 mA cm−2 current density, which is excellently superior than those of ZnFe-LDH@Cu(OH)2/CF, NiFe-LDH@Cu(OH)2/CF, Cu(OH)2/CF and CF. Additionally, the capacitance retention remains as high as 83.4% after 5000 cycles and a very small Rs (0.567 Ω) can be observed. In addition, an asymmetric supercapacitor device is successfully fabricated employing ZnNiFe-LDH@Cu(OH)2/CF. Meanwhile, the ZnNiFe-LDH@Cu(OH)2/CF//AC device can achieve an energy density of 44 Wh kg−1 and a corresponding power density of 720 W kg−1 and possess the capability to light up a multi-function monitor for 33 min just using two ASC equipments connected in series. Therefore, the prepared ZnNiFe-LDH@Cu(OH)2/CF composite materials with unique structure has great application potential in energy storage devices.



中文翻译:

在Cu(OH)2纳米棒阵列上合成折纸和层状ZnNiFe-LDH以增强储能能力

具有独特核壳结构的层状纳米棒阵列和过渡金属层状双氢氧化物(LDH)的组合被认为是提高电容器电极电化学性能的可行解决方案。在这项研究中,层状 ZnNiFe-LDH@Cu(OH) 2 /CF 核壳纳米棒阵列由超薄的 ZnNiFe-LDHs 纳米片壳和有序的 Cu(OH) 2纳米棒内核组成,成功地设计和制造了一个典型的水热方式和简单的原位氧化反应。使用 ZnNiFe-LDH@Cu(OH) 2 /CF 纳米材料制备的电极在 3 mA cm -2 下具有 6100 mF cm -2的显着面积电容电流密度,优于ZnFe-LDH@Cu(OH) 2 /CF、NiFe-LDH@Cu(OH) 2 /CF、Cu(OH) 2 /CF和CF。此外,5000 次循环后电容保持率仍高达 83.4%,并且可以观察到非常小的 Rs (0.567 Ω)。此外,采用ZnNiFe-LDH@Cu(OH) 2 /CF成功制造了不对称超级电容器装置。同时,ZnNiFe-LDH@Cu(OH) 2 /CF//AC器件可以实现44 Wh kg -1的能量密度和720 W kg -1的相应功率密度并具有仅使用两个串联的ASC设备即可点亮多功能显示器33分钟的能力。因此,制备的具有独特结构的ZnNiFe-LDH@Cu(OH) 2 /CF复合材料在储能器件中具有巨大的应用潜力。

更新日期:2021-09-27
down
wechat
bug