scholarly journals Electrodeposited Cobalt-Sulfide Catalyst for Electrochemical and Photoelectrochemical Hydrogen Generation from Water

2013 ◽  
Vol 135 (47) ◽  
pp. 17699-17702 ◽  
Author(s):  
Yujie Sun ◽  
Chong Liu ◽  
David C. Grauer ◽  
Junko Yano ◽  
Jeffrey R. Long ◽  
...  
Keyword(s):  
Hydrogen Generation ◽  
Cobalt Sulfide ◽  
Sulfide Catalyst

scholarly journals Enhanced photoelectrochemical hydrogen generation in neutral electrolyte using non-vacuum processed CIGS photocathodes with an earth-abundant cobalt sulfide catalyst

2019 ◽  
Vol 55 (17) ◽  
pp. 2465-2468 ◽  
Author(s):  
Mingqing Wang ◽  
Yung-Shan Chang ◽  
Chun-Wen Tsao ◽  
Mei-Jing Fang ◽  
Yung-Jung Hsu ◽  
...  
Keyword(s):  
Hydrogen Generation ◽  
Cobalt Sulfide ◽  
Sulfide Catalyst ◽  
Earth Abundant ◽  
Neutral Electrolyte

A CIGS-based photocathode combined with an earth abundant Co–S catalyst has demonstrated remarkable photoelectrochemical hydrogen generation in neutral electrolyte.

So-called ·CoMoS“ phase observed in carbon-supported cobalt sulfide catalyst by mössbauer emission spectroscopy

1988 ◽  
Vol 39 ◽  
pp. L7-L10 ◽  
Author(s):  
A.M. Van Der Kraan ◽  
M.W.J. Crajé ◽  
E. Gerkema ◽  
W.L.T.M. Ramselaar ◽  
V.H.J. De Beer
Keyword(s):  
Emission Spectroscopy ◽  
Cobalt Sulfide ◽  
Sulfide Catalyst

Silicon Decorated with Amorphous Cobalt Molybdenum Sulfide Catalyst as an Efficient Photocathode for Solar Hydrogen Generation

ACS Nano ◽  
2015 ◽  
Vol 9 (4) ◽  
pp. 3829-3836 ◽  
Author(s):  
Yang Chen ◽  
Phong D. Tran ◽  
Pablo Boix ◽  
Yi Ren ◽  
Sing Yang Chiam ◽  
...  
Keyword(s):  
Hydrogen Generation ◽  
Molybdenum Sulfide ◽  
Sulfide Catalyst ◽  
Solar Hydrogen

scholarly journals Cobalt Sulfide as Photoelectrode of Photoelectrochemical Hydrogen Generation from Water

2020 ◽  
Vol 49 (12) ◽  
pp. 3063-3069
Author(s):  
Mustafid Amna Rambey ◽  
Khuzaimah Arifin ◽  
Lorna Jeffery Minggu ◽  
Mohammad B. Kassim
Keyword(s):  
Water Splitting ◽  
Hydrogen Generation ◽  
Linear Sweep Voltammetry ◽  
Photocurrent Density ◽  
Cobalt Sulfide ◽  
X Ray Diffraction ◽  
Tauc Plot ◽  
Fourier Transform Raman Spectroscopy ◽  
Different Temperatures ◽  
Pec Water Splitting

This study aimed to synthesize and characterize cobalt sulfide deposited on FTO by hydrothermal method and investigate its photoelectrochemical (PEC) water splitting performance. Cobalt sulfide thin films were produced by annealing at two different temperatures, namely, 400 and 500 °C. X-ray diffraction (XRD) and Fourier transform Raman spectroscopy were used to characterize the phase structure. Scanning electron microscopy was used to observe the morphology. Ultraviolet-visible spectroscopy and linear sweep voltammetry analyses were used to determine the thin-film band gap and evaluate the PEC water splitting performance, respectively. From the XRD and Raman analyses, all the samples produced consisted of mixed phases of Co3S4 and Co9S8. However, each sample contained different percentage phases. The sample annealed at 400 °C contained more Co9S8, whereas that annealed at 500 °C contained comparable amounts of Co3S4 and Co9S8. The morphologies of pre-annealed samples showed vertical flakes with diameters around 200-250 nm and flake thickness around 25-50 nm. When the temperature was increased from pre-annealing temperature to 400 and 500 °C, several flakes were destructed and formed spherical-like clusters. The Tauc plot from absorption analysis showed that the samples annealed at 400 and 500 °C produced similar band gaps at ~2.0 eV. The PEC performance analysis results show that annealing at 400 °C produced the highest photocurrent density of 10 µA/cm2 at a potential of -0.7 V.

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