Self‐Supported Binder‐Free Hybrid Electrodes of Cu@CuO Nanowires/Carbon Nanotubes for Supercapacitors with Ultrahigh Areal‐Capacitance,Energy Technology

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Self‐Supported Binder‐Free Hybrid Electrodes of Cu@CuO Nanowires/Carbon Nanotubes for Supercapacitors with Ultrahigh Areal‐Capacitance
Energy Technology ( IF 3.6 ) Pub Date : 2020-11-04 , DOI: 10.1002/ente.202000744
Hai-Xu Zhao ₁ , Yi-Lin Liu ₁ , Gui-Gen Wang ₁ , Fei Li ₁ , Gui-Zhong Li ₁ , Hai-Ling Zhou ₁ , Hua-Yu Zhang ₁ , Jie-Cai Han _{1,

2}

Affiliation

To meet the requirement of clean and efficient energy storage system for practical applications, supercapacitors (SCs), which are promising candidates for the next‐generation energy storage devices, have received tremendous attention. Herein, a hybrid electrode consisting of copper nanowires (Cu NWs) and carbon nanotubes (CNTs) is prepared by simple vacuum‐filtration method. Both Cu NWs and CNTs have excellent conductivities, high aspect ratios, and large surface areas, in which the two kinds of materials are evenly dispersed and are entangled with each other. The electrochemical performance characterization of the Cu@CuO NWs/CNTs hybrid electrode shows high specific capacitance of 1.7 F cm⁻² and excellent cycling characteristics of 97.4% after 5000 cycles. The hybrid electrode of Cu@CuO NWs/CNTs with one‐dimensional (1D) structure provides significant advantages in terms of electron/ion transport pathways. The SC devices with excellent electrochemical performance and stability clearly demonstrate their broad applications as low‐cost, high‐performance power supplies for electronic devices.

中文翻译：

自支撑的Cu @ CuO纳米线/碳纳米管无粘合剂混合电极，用于超高电容的超级电容器

为了满足清洁和高效的储能系统在实际应用中的需求，超级电容器（SC）是下一代储能设备的有希望的候选者，已经受到了广泛的关注。在此，通过简单的真空过滤方法制备了由铜纳米线（Cu NWs）和碳纳米管（CNTs）组成的混合电极。Cu NW和CNT均具有优异的电导率，高纵横比和较大的表面积，其中两种材料均匀分散并相互缠结。Cu @ CuO NWs / CNTs杂化电极的电化学性能表征显示出1.7 F cm ^-2的高比电容5000次循环后具有97.4％的出色循环特性。具有一维（1D）结构的Cu @ CuO NWs / CNT的杂化电极在电子/离子传输路径方面具有明显的优势。具有出色电化学性能和稳定性的SC器件清楚地证明了其广泛的用途，作为用于电子设备的低成本，高性能电源。

更新日期：2021-01-05

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