Journal ArticleDOI
Highly active oxide photocathode for photoelectrochemical water reduction
Adriana Paracchino,Vincent Laporte,Kevin Sivula,Michael Grätzel,Elijah Thimsen,Elijah Thimsen +5 more
TLDR
A highly active photocathode for solar H(2) production is presented, consisting of electrodeposited cuprous oxide, which was protected against photocathodic decomposition in water by nanolayers of Al-doped zinc oxide and titanium oxide and activated for hydrogen evolution with electroDeposited Pt nanoparticles.Abstract:
A clean and efficient way to overcome the limited supply of fossil fuels and the greenhouse effect is the production of hydrogen fuel from sunlight and water through the semiconductor/water junction of a photoelectrochemical cell, where energy collection and water electrolysis are combined into a single semiconductor electrode. We present a highly active photocathode for solar H(2) production, consisting of electrodeposited cuprous oxide, which was protected against photocathodic decomposition in water by nanolayers of Al-doped zinc oxide and titanium oxide and activated for hydrogen evolution with electrodeposited Pt nanoparticles. The roles of the different surface protection components were investigated, and in the best case electrodes showed photocurrents of up to -7.6 mA cm(-2) at a potential of 0 V versus the reversible hydrogen electrode at mild pH. The electrodes remained active after 1 h of testing, cuprous oxide was found to be stable during the water reduction reaction and the Faradaic efficiency was estimated to be close to 100%.read more
Citations
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Synthesis and characterization of photoelectrochemical and photovoltaic Cu2BaSnS4 thin films and solar cells
TL;DR: In this paper, the authors synthesize CBTS thin films from precursors with different Cu compositions and find that the Cu composition of the precursor can influence the phase formation and structural preferred orientation in the resultant CBTS films.
Journal ArticleDOI
Using chemical bath deposition to create nanosheet-like CuO electrodes for supercapacitor applications.
S.K. Shinde,Hemraj M. Yadav,Gajanan Ghodake,Avinash A. Kadam,V.S. Kumbhar,Jiwook Yang,Kyo-Jung Hwang,Ajay D. Jagadale,Sunil Kumar,Dae-Young Kim +9 more
TL;DR: Findings indicate that the HPDMIM(C1):CuO thin films are a candidate for energy-storage applications, and the highest specific capacitance was achieved for the electrode with a nanosheet-like structure produced by functionalization with the H PDMIM (C1) ionic liquid.
Journal ArticleDOI
Controlled Electrodeposition of Photoelectrochemically Active Amorphous MoSx Cocatalyst on Sb2Se3 Photocathode
TL;DR: X-ray photoelectron spectroscopy confirmed that different chemical states of a-MoS x (photoelectrochemically active sites) were developed on the basis of the electrodeposit morphology, which improved the photocurrent density and reduced the charge-transfer resistance at the semiconductor/electrolyte interface, as compared to its particulate counterpart.
Journal ArticleDOI
Boosting the visible-light photoactivities of BiVO4 nanoplates by Eu doping and coupling CeOx nanoparticles for CO2 reduction and organic oxidation
TL;DR: In this paper, the amount-optimized CeOx/BiVO4:Eu3+ nanoparticles possess a ∼3-time enhancement in visible-light photocatalytic performance for CO2 conversion to CH4 and degradation of 2,4-dichlorophenol (2,4)-DCP.
Journal ArticleDOI
Photoelectrode for water splitting: Materials, fabrication and characterization
Zhiliang Wang,Lianzhou Wang +1 more
TL;DR: A review on the development of PEC water splitting in the aspect of materials exploring, fabrication method and characterization is provided to provide some fundamental insight of P EC and inspire the design of more effective PEC systems.
References
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Journal Article
Photoelectrochemical cells : Materials for clean energy
TL;DR: In this paper, the authors look into the historical background, and present status and development prospects for photoelectrochemical cells, based on nanocrystalline materials and conducting polymer films.
Journal ArticleDOI
A Monolithic Photovoltaic-Photoelectrochemical Device for Hydrogen Production via Water Splitting
O. Khaselev,John A. Turner +1 more
TL;DR: Direct water electrolysis was achieved with a novel, integrated, monolithic photoelectrochemical-photovoltaic design that splits water directly upon illumination; light is the only energy input.
Journal ArticleDOI
Cu2O as a photocatalyst for overall water splitting under visible light irradiation
Michikazu Hara,Takeshi Kondo,Mutsuko Komoda,Sigeru Ikeda,Junko N. Kondo,Kazunari Domen,Kiyoaki Shinohara,Akira Tanaka +7 more
TL;DR: In this paper, the photocatalytic water splitting on Cu2O powder proceeds without any noticeable decrease in the activity for more than 1900 h. The authors investigated the decomposition of water into H2 and O2 under visible light irradiation.
Journal ArticleDOI
High Density n-Si/n-TiO2 Core/Shell Nanowire Arrays with Enhanced Photoactivity
TL;DR: It is observed that highly dense Si/TiO(2) core/shell nanowire arrays enhanced the photocurrent by 2.5 times compared to planar Si/ TiO( 2) structure due to their low reflectance and high surface area.
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