Influence of Stirring Time on the Electrochemical Properties of NiCo 2 S 4  Hexagonal Plates and NiCo−OH Nanoparticles as High‐Performance Pseudocapacitor Electrode Materials | Zendy

Sajjad Muhammad | Zendy; Xu Chen | Zendy; Guan Linlin | Zendy; Zhang Shuyu | Zendy; Jiao Yangjing | Zendy; Zhang Shuangshuang | Zendy; Lin Yuting | Zendy; Ren Yang | Zendy; Zhou Xiaowei | Zendy; Liu Zhu | Zendy

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Influence of Stirring Time on the Electrochemical Properties of NiCo 2 S 4 Hexagonal Plates and NiCo−OH Nanoparticles as High‐Performance Pseudocapacitor Electrode Materials

Author(s) -

Sajjad Muhammad,

Xu Chen,

Guan Linlin,

Zhang Shuyu,

Jiao Yangjing,

Zhang Shuangshuang,

Lin Yuting,

Ren Yang,

Zhou Xiaowei,

Liu Zhu

Publication year - 2020

Publication title -

chemistryselect

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 34

ISSN - 2365-6549

DOI - 10.1002/slct.201904944

Subject(s) - pseudocapacitor , materials science , electrode , electrochemistry , supercapacitor , hexagonal crystal system , nanoparticle , capacitance , chemical engineering , horizontal scan rate , nanotechnology , current density , nanostructure , crystallography , cyclic voltammetry , chemistry , physics , quantum mechanics , engineering

This study investigated the morphology dependent electrochemical behavior tuned with different stirring times (1, 5, 10, 20, 40 min, and 1 hr.) for NiCo 2 S 4 hexagonal 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 −2 at the current density of 10 mA cm −2 along 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.

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