...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemical engineering journal >Advanced binder-free electrode based on core-shell nanostructures of mesoporous Co3V2O8-Ni3V2O8 thin layers@porous carbon nanofibers for high-performance and flexible all-solid-state supercapacitors
【24h】

Advanced binder-free electrode based on core-shell nanostructures of mesoporous Co3V2O8-Ni3V2O8 thin layers@porous carbon nanofibers for high-performance and flexible all-solid-state supercapacitors

机译：基于核心壳纳米结构的高级粘结电极的中孔CO3V2O8-NI3V2O8薄层@多孔碳纳米纤维，高性能和柔性全固态超级电容器

获取原文
获取原文并翻译 | 示例
   

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

The development of thin layer structures on flexible current collectors has become as an effective strategy for preparing advanced portable and wearable power sources. Herein, a flexible and efficient electrode was fabricated based on electrospun porous carbon nanofibers (PCNFs) substrate with elaborately designed thin layer Co3V2O8-Ni3V2O8 core-shell nanostructures (Co3V2O8-Ni3V2O8 TLs@PCNFs). The resulting free-standing Co3V2O8-Ni3V2O8 TLs@PCNFs composite was used directly as a flexible electrode in three electrode system for supercapacitor studies without the need for utilization of either binder or metal-based current collector. The unique thin layer structure of Co3V2O8-Ni3V2O8 TLs@PCNFs fully enables utilization of the synergistic effects from both high electrochemical performance of cobalt, nickel, and vanadium and excellent conductivity, and flexibility of PCNFs. Benefiting from their intriguing structural features, the Co3V2O8-Ni3V2O8 TLs@PCNFs and PCNFs were used directly as a positive and a negative electrode, respectively, for fabrication of flexible all-solidstate asymmetric supercapacitors, which render superior flexibility and reliability, high energy density (59.7 Wh kg(-1) at 1.97 kW kg(-1)), high power density (13.4 kW kg(-1) at 40.6 Wh kg(-1)), and outstanding cycling stability (88.5% capacitance retention after 3000 cycles at 5.0 A g(-1)). This performance comparable to or higher than high-end commercially available supercapacitors and most of the previous reported asymmetric devices. Therefore, it is believed that this novel design shows a great potential in developing flexible energy storage devices with high energy and power densities in the future.
机译：柔性电流收集器上的薄层结构的开发成为准备先进的便携式和可穿戴电源的有效策略。在此，基于电纺多孔碳纳米纤维（PCNFS）基材制造具有精心设计的薄层CO3V2O8-NI3V2O8核壳纳米结构（CO3V2O8-NI3V2O8 TLS @ PCNFS）的柔性高效的电极。由此得到的自由的CO3V2O8-NI3V2O8 TLS @ PCNFS复合材料直接用作三个电极系统中的柔性电极，用于超级电容器研究，而无需利用粘合剂或金属基集电器。 CO3V2O8-NI3V2O8 TLS的独特薄层结构完全使得能够利用钴，镍和钒的高电化学性能以及优异的导电性以及PCNF的灵活性。受益于其有趣的结构特征，CO3V2O8-NI3V2O8 TLS @ PCNFS和PCNF分别是正极和负电极，用于制造柔性全固体不对称超级电容器，这使得卓越的柔韧性和可靠性，高能量密度（ 59.7 WH kg（-1）在1.97 kW kg（-1）），高功率密度（13.4 kg kg（-1），40.6 wh kg（-1）），并出色的循环稳定性（3000次循环后88.5％的电容保留在5.0 a g（-1））。这种性能可与高端市售的超级电容器和大多数先前报告的不对称装置相当。因此，据信，这种新颖的设计在将来开发具有高能量和功率密度的灵活能量存储装置的巨大潜力。

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