Citation: HAN Lu, QIN Wei. Preparation and Electrochemical Hydrogen Storage Properties of TiO₂ Coated Co₉S₈[J]. Chinese Journal of Applied Chemistry, ;2018, 35(8): 963-968. doi: 10.11944/j.issn.1000-0518.2018.08.180143 shu

Preparation and Electrochemical Hydrogen Storage Properties of TiO₂ Coated Co₉S₈

HAN Lu ^a,b ,
QIN Wei ^c,,

a.
School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
b.
Institute of Chemical Engineering, Hebei Normal University of Science and Technology, Qinhuangdao, Hebei 066004, China
c.
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

Corresponding author: QIN Wei, qinwei@hit.edu.cn
Received Date: 2 May 2018
Revised Date: 25 June 2018
Accepted Date: 25 June 2018

Fund Project: the National Natural Science Foundation of China 51671074the National Natural Science Foundation of China 51572060Supported by the National Natural Science Foundation of China (No. 51572060, No. 51671074)

Figures(5)

Finding new energy has become the key to solving the energy and environmental problems. Hydrogen became the research focus because of its high energy efficiency and non-pollution. In recent years, Co₉S₈ is becoming a hot research topic with the excellent electrochemical hydrogen storage properties and high hydrogen storage capacity, but its anti-powering property still needs to be further improved. In this paper, TiO₂ with different mass fraction coated Co₉S₈ electrode materials were obtained by using sol-gel and calcination methods. X-ray diffraction spectra(XRD), scanning electron microscope(SEM) and electrochemical measurement system were used to analyze the composition and hydrogen storage capacity of coating materials. The effects of TiO₂ with different mass fractions on the electrochemical hydrogen storage performance were studied. The experimental results show that, when the mass fraction of TiO₂ is 3%, the hydrogen storage capacity and cycling stability of the product are disirable. The maximum hydrogen storage capacity of the product is 2.03%(mass fraction), along with a favorable cycling stability of 60% after 30 cycles.
- Co₉S₈,
- TiO₂,
- coating,
- electrochemical hydrogen storage property
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Preparation and Electrochemical Hydrogen Storage Properties of TiO₂ Coated Co₉S₈