Hydrothermal one-step synthesis of layered nickel/cobalt double hydroxide with using shape-directing agent and homogeneous precipitating agent

Authors

Li-wei ZHU
Yun-hai YAN
Hui JIA
Run-fen LIANG

Corresponding Author

Li-wei ZHU

Abstract

Nickel/cobalt double hydroxide (Ni/Co-DH) has been prepared by facile hydrothermal one-step synthesis method using hexamethylene tetramine (HMT) as a homogeneous precipitating agent and cetyltrimethylammonium bromide (CTAB) as a shape-directing agent. With the hydrolysis of HMT and the use of CTAB, the Ni/Co-DH could be synthesized without additional alkali source, and in the meantime, the Ni/Co-DH exhibited a controlled mesopore size of 13.4 nm and a large BET surface area of 93.6 m² •g^-1 . The X-ray diffraction (XRD) pattern displays that the Ni/Co-DH existed as a mixture of α-Ni(OH)₂-β-Co(OH)₂. The scanning electron microscope (SEM) image shows that the as-prepared Ni/Co-DH took on a layered structure, which leads to a maximum specific capacitance of 1902 F•g^-1 at a current density of 1 A•g^-1. The specific capacitance remained 1250 F•g^-1 when the current density increased to 8 A•g^-1.

Graphical Abstract

Keywords

Layered material, Cetyltrimethylammonium bromide, Nickel/cobalt double hydroxide, Electrochemical performance

DOI Link

https://doi.org/10.13208/j.electrochem.151119

Publication Date

2016-08-29

Online Available Date

2015-12-25

Revised Date

2015-12-22

Received Date

2015-11-19

Recommended Citation

Li-wei ZHU, Yun-hai YAN, Hui JIA, Run-fen LIANG. Hydrothermal one-step synthesis of layered nickel/cobalt double hydroxide with using shape-directing agent and homogeneous precipitating agent[J]. Journal of Electrochemistry, 2016 , 22(4): 151119.
DOI: 10.13208/j.electrochem.151119
Available at: https://jelectrochem.xmu.edu.cn/journal/vol22/iss4/14