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首页> 外文期刊>RSC Advances >A cellulose-based hybrid 2D material aerogel for a flexible all-solid-state supercapacitor with high specific capacitance
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A cellulose-based hybrid 2D material aerogel for a flexible all-solid-state supercapacitor with high specific capacitance

机译：一种基于纤维素的混合2D材料气体，用于具有高比电容的柔性全固态超级电容器

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摘要

As one of the energy storage devices, all-solid-state flexible supercapacitors have attracted significant attention because of their high power density, low cost, high safety, low environmental impact, and long cycle life. In this study, a new type of all-solid-state flexible supercapacitor that uses cellulose nanofibers (CNFs)/molybdenum disulfide (MoS2)/reduced graphene oxide (RGO) hybrid aerogel film as an electrode material and charge collector and H2SO4/polyvinyl alcohol (PVA) gel as an electrolyte and separator has been demonstrated. These aerogels are prepared by supercritical CO2 drying, which use CNFs as an effective, environmentally friendly, and steady dispersant of MoS2 and RGO. Owing to the porous structure of the electrodes and the remarkable electrolyte absorption properties, the supercapacitors exhibit excellent electrochemical properties. The specific capacitance calculated from the cyclic voltammogram curves at a scan rate of 2 mV s(-1) is about 916.42 F g(-1). The capacity retention is more than 98% after 5000 charge-discharge cycles at a current density of 0.5 mA cm(-2). Additionally, the areal capacitance, areal power density, and energy density of the supercapacitors are about 458.2 mF cm(-2), 8.56 mW cm(-2) (4.3 kW kg(-1)), and 45.7 mW h cm(-2) (22.8 W h kg(-1)), respectively. Owing to its low cost and environmental friendliness, CNFs/MoS2/RGO nanohybrid aerogel has great application potential as an electrode material of all-solid-state flexible supercapacitors.
机译：作为一个能量存储装置之一，全固态柔性超级电容器由于其高功率密度，低成本，高安全性，低环境影响和长循环寿命而引起了显着的关注。在本研究中，一种新型的全固态柔性超级电容器，其使用纤维素纳米纤维（CNF）/钼二硫化物（MOS2）/氧化钼氧化物（RGO）混合气凝胶作为电极材料和电荷收集器和H 2 SO 4 /聚乙烯醇（PVA）凝胶作为电解质和分离器已经证明。这些气凝胶通过超临界CO 2干燥制备，其使用CNF作为MOS2和RGO的有效，环保和稳定的分散剂。由于电极的多孔结构和显着的电解质吸收特性，超级电容器表现出优异的电化学性质。从扫描速率为2mV S（-1）的循环伏型图曲线计算的具体电容约为916.42fg（-1）。在5000个电荷放电循环的电流密度为0.5 mA cm（-2）后，容量保持超过98％。另外，超级电容器的面积电容，面部功率密度和能量密度约为458.2mF cm（-2），8.56mm cm（-2）（4.3kW kg（-1））和45.7 mw h cm（ - 2）分别（22.8 W H kg（-1））。由于其低成本和环境友好性，CNFS / MOS2 / RGO纳米混合气凝胶具有良好的应用潜力作为全固态柔性超级电容器的电极材料。

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  • 来源
    《RSC Advances》 |2017年第69期|共9页
  • 作者

    Lv Yanyan; Li Lei; Zhou Yi; Yu Miao; Wang Jianquan; Liu Jianxin; Zhou Jiagui; Fan Zongqing; Shao Ziqiang;

  • 作者单位

    Beijing Inst Technol Sch Mat Sci &

    Engn Beijing Engn Res Ctr Cellulose &

    Its Derivat Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci &

    Engn Beijing Engn Res Ctr Cellulose &

    Its Derivat Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci &

    Engn Beijing Engn Res Ctr Cellulose &

    Its Derivat Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci &

    Engn Beijing Engn Res Ctr Cellulose &

    Its Derivat Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci &

    Engn Beijing Engn Res Ctr Cellulose &

    Its Derivat Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci &

    Engn Beijing Engn Res Ctr Cellulose &

    Its Derivat Beijing 100081 Peoples R China;

    Hubei Jinhanjiang Refined Cotton Co Zhongxiang City 431900 Hubei Peoples R China;

    Hubei Jinhanjiang Refined Cotton Co Zhongxiang City 431900 Hubei Peoples R China;

    Beijing Inst Technol Sch Mat Sci &

    Engn Beijing Engn Res Ctr Cellulose &

    Its Derivat Beijing 100081 Peoples R China;

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