首页> 美国卫生研究院文献>Nanomaterials >Supercapacitor Performance of Nickel-Cobalt Sulfide Nanotubes Decorated Using Ni Co-Layered Double Hydroxide Nanosheets Grown in Situ on Ni Foam
【2h】

Supercapacitor Performance of Nickel-Cobalt Sulfide Nanotubes Decorated Using Ni Co-Layered Double Hydroxide Nanosheets Grown in Situ on Ni Foam

机译:使用在镍泡沫上原位生长的镍共沉积双氢氧化物纳米片装饰的镍钴硫化物纳米管的超级电容器性能

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

In this study, to fabricate a non-binder electrode, we grew nickel–cobalt sulfide (NCS) nanotubes (NTs) on a Ni foam substrate using a hydrothermal method through a two-step approach, namely in situ growth and an anion-exchange reaction. This was followed by the electrodeposition of double-layered nickel-cobalt hydroxide (NCOH) over a nanotube-coated substrate to fabricate NCOH core-shell nanotubes. The final product is called NCS@NCOH herein. Structural and morphological analyses of the synthesized electrode materials were conducted via SEM and XRD. Different electrodeposition times were selected, including 10, 20, 40, and 80 s. The results indicate that the NCSNTs electrodeposited with NCOH nanosheets for 40 s have the highest specific capacitance (SC), cycling stability (2105 Fg at a current density of 2 Ag ), and capacitance retention (65.1% after 3,000 cycles), in comparison with those electrodeposited for 10, 20, and 80 s. Furthermore, for practical applications, a device with negative and positive electrodes made of active carbon and NCS@NCOH was fabricated, achieving a high-energy density of 23.73 Whkg at a power density of 400 Wkg .
机译:在这项研究中,为了制造非粘结剂电极,我们使用水热法通过两步法(即原位生长和阴离子交换)在镍泡沫衬底上生长了镍钴硫化物(NCS)纳米管(NTs)。反应。然后在碳纳米管涂覆的基材上电沉积双层氢氧化镍钴氢氧化物(NCOH),以制造NCOH核壳纳米管。最终产品在本文中称为NCS @ NCOH。通过SEM和XRD对合成的电极材料进行结构和形态分析。选择不同的电沉积时间,包括10、20、40和80 s。结果表明,与之相比,用NCOH纳米片电沉积40 s的NCSNTs具有最高的比电容(SC),循环稳定性(在2 Ag的电流密度下为2105 Fg)和电容保持率(3,000次循环后为65.1%)那些电沉积10、20和80 s。此外,对于实际应用,制造了具有由活性炭和NCS @ NCOH制成的负电极和正电极的装置,在400 Wkg的功率密度下实现了23.73 Whkg的高能量密度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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