登录
 机构网站
  1. 首页
  2. 情报产品
  3. 快讯详情

《Fiber-Based Flexible All-Solid-State Asymmetric Supercapacitors for Integrated Photodetecting System?》

  • 来源专题：绿色印刷—可穿戴电子
  • 编译者： 张宗鹏
  • 发布时间：2016-04-13

  • Abstract

    Integrated nanodevices with the capability of storing energy are widely applicable and have thus been studied extensively. To meet the demand for flexible integrated devices, all-solid-state asymmetric supercapacitors that simultaneously realize energy storage and optoelectronic detection were fabricated by growing Co3O4 nanowires on nickel fibers, thus giving the positive electrode, and employing graphene as both the negative electrode and light-sensitive material. The as-assembled integrated systems were characterized by an improved energy storage, enhanced power density (at least by 1860 % enhanced) by improving the potential window from 0–0.6?V to 0—1.5?V, excellent photoresponse to white light, and superior flexibility of both the fiber-based asymmetric supercapacitor and the photodetector. Such flexible integrated devices might be used in smart and self-powered sensory, wearable, and portable electronics.

  • 原文来源：;http://onlinelibrary.wiley.com/doi/10.1002/anie.201307581/abstract
165浏览量
原文链接
相关报告

  • 《Nitrogen-Doped Carbon Encapsulated Mesoporous Vanadium Nitride Nanowires as Self-Supported Electrodes for Flexible All-Solid-State Supercapacitors》
    • 来源专题：绿色印刷—可穿戴电子
    • 编译者：张宗鹏
    • 发布时间：2016-04-13
    • Keywords:     nitrogen-doped carbon shells;flexible electrodes;mesoporous;supercapacitors;vanadium nitride Flexible 3D nanoarchitectures have received tremendous interest recently because of their potential applications in flexible/wearable energy storage devices. Herein, 3D intertwined nitrogen-doped carbon encapsulated mesoporous vanadium nitride nanowires (MVN@NC NWs) are investigated as thin, lightweight, and self-supported electrodes for flexible supercapacitors (SCs). The MVN NWs have abundant active sites accessible to charge storage, and the N-doped carbon shell suppresses electrochemical dissolution of the inner MVN NWs in an alkaline electrolyte, leading to excellent capacitive properties. The flexible MVN@NC NWs film electrode delivers a high areal capacitance of 282 mF cm−2 and exhibits excellent long-term stability with 91.8% capacitance retention after 12 000 cycles in a KOH electrolyte. All-solid-state flexible SCs assembled by sandwiching two flexible MVN@NC NWs film electrodes with alkaline poly(vinyl alcohol) (PVA), sodium polyacrylate, and KOH gel electrolyte boast a high volumetric capacitance of 10.9 F cm−3, an energy density of 0.97 mWh cm−3, and a power density of 2.72 W cm−3 at a current density of 0.051 A cm−3 based on the entire cell. By virtue of the excellent mechanical flexibility, high capacitance, and large energy/power density, the self-supported MVN@NC NWs paper-like electrodes have large potential applications in portable and wearable flexible electronics.
    58浏览量
    原文链接

  • 《Sub-Micrometer-Thick All-Solid-State Supercapacitors with High Power and Energy Densities》
    • 来源专题：绿色印刷—可穿戴电子
    • 编译者：张宗鹏
    • 发布时间：2016-04-13
    • Abstract original image A sub-micrometer-thick, flexible, all-solid-state supercapacitor is fabricated. Through simultaneous realization of high dispersity of pseudocapacitance materials and quick electrode response, the hybrid nanostructures show enhanced volumetric capacitance and excellent stability, as well as very high power and energy densities. This suggests their potential as next-generation, high-performance energy conversion and storage devices for wearable electronics.
    188浏览量
    原文链接