...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Scientific reports. >Three-Dimensional Bi-Continuous Nanoporous Gold/Nickel Foam Supported MnO 2 for High Performance Supercapacitors
【24h】

Three-Dimensional Bi-Continuous Nanoporous Gold/Nickel Foam Supported MnO 2 for High Performance Supercapacitors

机译：高性能超级电容器的三维双连续纳米多孔金/镍泡沫负载MnO 2。

获取原文
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A three-dimensional bi-continuous nanoporous gold (NPG)ickel foam is developed though the electrodeposition of a gold–tin alloy on Ni foam and subsequent chemical dealloying of tin. The newly-designed 3D metal structure is used to anchor MnO2 nanosheets for high-performance supercapacitors. The formed ternary composite electrodes exhibit significantly-enhanced capacitance performance, rate capability, and excellent cycling stability. A specific capacitance of 442?Fg?1 is achieved at a scan rate of 5?mV?s?1 and a relatively high mass loading of 865?μg?cm?2. After 2500 cycles, only a 1% decay is found at a scan rate of 50?mV?s?1. A high power density of 3513?W?kg?1 and an energy density of 25.73?Wh?kg?1 are realized for potential energy storage devices. The results demonstrate that the NPGickel foam hybrid structure significantly improves the dispersibility of MnO2 and makes it promising for practical energy storage applications.
机译：通过在镍泡沫上电沉积金锡合金并随后化学脱锡，开发出了一种三维双连续纳米多孔金（NPG）/镍泡沫。新设计的3D金属结构用于锚固MnO2纳米片，用于高性能超级电容器。形成的三元复合电极表现出显着增强的电容性能，倍率能力和出色的循环稳定性。在5ΩmVΩsΩ1的扫描速率和865ΩμgΩ·cm 2的相对较高的质量负载下获得442ΩFgΩ1的比电容。 2500次循环后，在50？mV？s？1的扫描速率下仅发现1％的衰减。对于潜在的能量存储设备，实现了3513？W？kg？1的高功率密度和25.73？Wh？kg？1的能量密度。结果表明，NPG /镍泡沫混合结构显着提高了MnO2的分散性，使其在实际的储能应用中很有希望。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号