层状结构
超级电容器
电容
材料科学
功率密度
化学工程
碳纤维
储能
灵活性(工程)
电压
图层(电子)
基质(水族馆)
光电子学
纳米技术
功率(物理)
复合材料
电极
化学
电气工程
复合数
工程类
物理
物理化学
热力学
地质学
海洋学
统计
数学
作者
Shen-Gen Gong,Yanhong Shi,Yang Su,Yanfei Li,Lei Ding,Jian Lin,Guo-Duo Yang,Bing Li,Xing‐Long Wu,Jingping Zhang,Haiming Xie,Haizhu Sun
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2021-09-23
卷期号:9 (39): 13385-13394
被引量:9
标识
DOI:10.1021/acssuschemeng.1c05164
摘要
Flexible asymmetric supercapacitor (FASC) systems are expected to exhibit not only excellent energy storage properties and safety but also satisfactory flexibility and robust integration. However, tremendous issues such as low capacitance, narrow voltage window, and poor mechanical properties still exist. In this paper, a novel kind of 3D lamellar Mn(OH)2 nanosheets on Cu-plated carbon cloth with a core-shell integrated framework (CPCC@CuO@Mn(OH)2) is fabricated to obtain the flexible material in the FASC. In this unique CPCC@CuO@Mn(OH)2 electrode material, the high theoretical specific capacity of CuO and Mn(OH)2 brings superior energy storage properties. Meanwhile, as the shell part, the deposited Mn(OH)2 layer and coated CuO layer work as both capacity contributors and substrate protectors, simultaneously maintaining the high capacitance and satisfactory flexibility of the electrodes. Therefore, the capacitance successfully achieves around 8140 mF cm–2 under 0.5 mA cm–2. Significantly, the assembled FASC (named as CPCC@CuO@Mn(OH)2//CC@AC) achieves a working voltage of up to 2.4 V. In the case of a high-power density close to 34.31 mW cm–3, its energy density reaches around 6.29 mW h cm–3. Moreover, the capacity holds 88.9% even after 10,000 cycles, showing its great application potential in the field of wearable electronics.
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