• 文献标题:   N-doped reduced graphene oxide/Co0.85Se microflowers with high mass loading as battery-type materials for quasi-solid-state hybrid supercapacitors
  • 文献类型:   Article
  • 作  者:   DU M, WANG ZJ, YANG C, DENG YF, WANG T, ZHONG W, YIN W, JIAO ZC, XIA WM, JIANG BL, ZHOU KS, YUN SN, CHEN YQ
  • 作者关键词:   co0.85se, ndoped graphene, high mass loading, quasisolidstate supercapacitor
  • 出版物名称:   JOURNAL OF ALLOYS COMPOUNDS
  • ISSN:   0925-8388 EI 1873-4669
  • 通讯作者地址:  
  • 被引频次:   2
  • DOI:   10.1016/j.jallcom.2021.161801 EA SEP 2021
  • 出版年:   2022

▎ 摘  要

In this work, we prepared N-doped reduced graphene oxide/Co0.85Se (N-rGO/CS) microflowers through a two-step method. Since introducing N-doped rGO, the fabricated N-rGO/CS electrode with a high mass loading (similar to 8.83 mg/cm(2)) exhibits high areal specific capacity of 0.522 mAh/cm(2) (4.24 F/cm(2)) at 1 mA/cm(2), and a long-term cycling stability (85.8% of capacity retention after 6000 charge-discharge cycles). This is mainly because N-doped rGO can increase specific area and electrical conductivity, enhance the electrochemical activity and effectively facilitate the electron/ion transport between the electrode and electrolyte. Besides, the quasi-solid-state hybrid supercapacitors (HSCs) assembled by the N-rGO/CS delivers a high volumetric specific capacity of 5.82 mAh/cm(3) at 1 mA/cm(2), excellent energy density of 4.65 mWh/cm(3) under 10.5 mW/cm(3) and eminement cycle stability (87.6% retention over 6000 cycles at 10 mA/cm(2)). (C) 2021 Elsevier B.V. All rights reserved.