赵健

+

其他联系方式

  • 邮箱:

论文成果

当前位置: 中文主页 > 科学研究 > 论文成果

Direct Growth of Ultrathin NiCo2O4/NiO Nanosheets on SiC Nanowires as a Free-Standing Advanced Electrode for High-Performance Asymmetric Supercapacitors

  • 发布时间:2023-10-19
  • 点击次数:

  • 关键字:NiCo2O4/NiO nanocomposites; SiC nanowires; Hydrothermal method; Hybrid electrode; Asymmetric supercapacitor
  • 摘要:In this paper, we successfully employed SiC nanowires (SiC NWs) with splendid anticorrosion, antioxidation, heat-resistant properties, excellent conductivity, and large specific surface area directly deposited on carbon cloth (CC) as scaffolds to grow first the loose, porous and ultrathin NiCo2O4/NiO nanosheets (NiCo2O4/NiO NSs) via a facile hydrothermal technology coupled with annealing treatment to form a free-standing and stable hybrid electrode for asymmetric supercapacitor (ASC). Benefiting from the smart combination of SiC NWs and NiCo2O4/NiO NSs, illustrating a promising synergistic strategy, the electrode delivered an ultrahigh specific capacitance of 1801 F g(-1) at 1 mA cm(-2) as well as a remarkable rate capability of 1499 F g(-1) at 10 mA cm(-2). Furthermore, the additive-free functionalized SiC NWs@NiCo2O4/NiO NSs on CC acted as the positive electrode, assembled with the activated carbon (AC) on nickel foam (NF) negative electrode to fabricate an advanced ASC with intriguing electrochemical performances in terms of huge energy density (60 Wh kg(-1) at 1.66 kW kg(-1)) in addition to exceptional cycling stability (90.9% capacitance retention after 2000 cycles). This novel strategy can not only further widen the application of SiC NWs-based materials but also provide new insight into the development of next-generation supercapacitors with high energy/power densities.
  • 卷号:4
  • 期号:7
  • 是否译文:

崂山校区 - 山东省青岛市松岭路99号   
四方校区 - 山东省青岛市郑州路53号   
中德国际合作区(中德校区) - 山东省青岛市西海岸新区团结路3698号
高密校区 - 山东省高密市杏坛西街1号   
济南校区 - 山东省济南市文化东路80号©2015 青岛科技大学    
管理员邮箱:master@qust.edu.cn