Influence of Stirring Time on the Electrochemical Properties of NiCo2S4 Hexagonal Plates and NiCo-OH Nanoparticles as High-Performance Pseudocapacitor Electrode Materials
Influence of Stirring Time on the Electrochemical Properties of NiCo2S4 Hexagonal Plates and NiCo-OH Nanoparticles as High-Performance Pseudocapacitor Electrode Materials
复制标题
搅拌时间对NiCo2S4六角板和NiCo-OH纳米颗粒高性能赝电容器电极材料电化学性能的影响
DOI：
10.1002/slct.201904944
复制
发表时间：
2020
期刊：
影响因子：
2.1
通讯作者：
Liu Zhu
中科院分区：
文献类型：
--
作者：
Sajjad Muhammad;Xu Chen;Guan Linlin;Zhang Shuyu;Jiao Yangjing;Zhang Shuangshuang;Lin Yuting;Ren Yang;Zhou Xiaowei;Liu Zhu
研究了不同搅拌时间（1、5、10、20、40 min和1 hr）对形貌依赖的电化学行为的影响。 对于NiCo2S4六方板（NCS六方板）和NiCo−OH纳米颗粒（NiCo−OH NPs）。改变的纳米结构特性得到了深入的结构和形态分析的充分支持。当用作超级电容器的电极时，NCS六边形板和NiCo−OH NP（分别在20 min和5 min的搅拌时间下制备）在10 mA cm− 2的电流密度下表现出833和733 mF cm− 2的最大比电容，以及由于其有益的结构特征而具有优异的上级速率和稳定的循环性能。 此外，稳定性研究显示在5000次循环后69.0%和67.0%的电容保持率，表明样品具有优异的稳定性。这些优异的性能表明，这种独特的分层结构有望在不久的将来成为储能领域的合适电极材料。
This study investigated the morphology dependent electrochemical behavior tuned with different stirring times (1, 5, 10, 20, 40 min, and 1 hr.) for NiCo2S4hexagonal plate (NCS hexagonal plate) and NiCo−OH nanoparticles (NiCo−OH NPs). The altered nanostructure properties are well supported by in‐depth structural and morphological analysis. When used as electrodes for supercapacitor, both NCS hexagonal plates and NiCo−OH NPs (prepared at stirring time of 20 min and 5 min, respectively) exhibit maximum specific capacitances of 833 and 733 mF cm−2at the current density of 10 mA cm−2along with superior rate and stable cycling performance due to their beneficial structural features. Moreover, the stability study showed 69.0 % and 67.0 % capacitance retention after 5000 cycles, indicating excellent stability of the samples. These outstanding properties manifest that the unique hierarchical structures promised as a suitable electrode material for the energy storage field shortly.