Journal ArticleDOI
Water photolysis at 12.3% efficiency via perovskite photovoltaics and Earth-abundant catalysts
Jingshan Luo,Jingshan Luo,Jeong-Hyeok Im,Jeong-Hyeok Im,Matthew T. Mayer,Marcel Schreier,Mohammad Khaja Nazeeruddin,Nam-Gyu Park,S. David Tilley,Hong Jin Fan,Michael Grätzel +10 more
TLDR
It is shown that a pair of perovskite cells connected in series can power the electrochemical breakdown of water into hydrogen and oxygen efficiently, and the combination of the two yields a water-splitting photocurrent density and a solar-to-hydrogen efficiency of 12.3%.Abstract:
Although sunlight-driven water splitting is a promising route to sustainable hydrogen fuel production, widespread implementation is hampered by the expense of the necessary photovoltaic and photoelectrochemical apparatus. Here, we describe a highly efficient and low-cost water-splitting cell combining a state-of-the-art solution-processed perovskite tandem solar cell and a bifunctional Earth-abundant catalyst. The catalyst electrode, a NiFe layered double hydroxide, exhibits high activity toward both the oxygen and hydrogen evolution reactions in alkaline electrolyte. The combination of the two yields a water-splitting photocurrent density of around 10 milliamperes per square centimeter, corresponding to a solar-to-hydrogen efficiency of 12.3%. Currently, the perovskite instability limits the cell lifetime.read more
Citations
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Journal ArticleDOI
Design and Application of Foams for Electrocatalysis
TL;DR: In this article, the authors reviewed the recent significant progress and rational design of foam-based electrocatalysts and discussed some insights into current challenges and future directions of foams for efficient electrocatalysis.
Journal ArticleDOI
High-Performance Oxygen Redox Catalysis with Multifunctional Cobalt Oxide Nanochains: Morphology-Dependent Activity
Prashanth W. Menezes,Arindam Indra,Diego González-Flores,Nastaran Ranjbar Sahraie,Ivelina Zaharieva,Michael Schwarze,Peter Strasser,Peter Strasser,Holger Dau,Matthias Driess +9 more
TL;DR: In this article, the authors report cobalt oxide nanochains as multifunctional catalysts for the electrochemical oxygen evolution reaction (OER) at both alkaline and neutral pH, oxidant-driven, photochemical water oxidation in various pH, and the Electrochemical oxygen reduction reaction (ORR) in alkaline medium.
Journal ArticleDOI
Perovskite–Hematite Tandem Cells for Efficient Overall Solar Driven Water Splitting
Gurudayal,Dharani Sabba,Mulmudi Hemant Kumar,Lydia Helena Wong,James Barber,James Barber,Michael Grätzel,Nripan Mathews +7 more
TL;DR: It is shown that a single solution processed organic-inorganic halide perovskite solar cell in tandem with a Fe2O3 photoanode can achieve overall unassisted water splitting with a solar-to-hydrogen conversion efficiency of 2.4%.
Journal ArticleDOI
Ultrathin two-dimensional cobalt–organic framework nanosheets for high-performance electrocatalytic oxygen evolution
TL;DR: In this article, the ultrathin two-dimensional cobalt-organic framework (Co-MOF) nanosheets with good catalytic activity for the oxygen evolution reaction were synthesized by a simple surfactant-assisted hydrothermal method.
Journal ArticleDOI
Rational Design of Graphene-Supported Single Atom Catalysts for Hydrogen Evolution Reaction
Delowar Hossain,Zhenjing Liu,Minghao Zhuang,Xingxu Yan,Gui-Liang Xu,Chaitanya Gadre,Abhishek Tyagi,Irfan Haider Abidi,Cheng-Jun Sun,Hoilun Wong,Alexander A. Guda,Yufeng Hao,Xiaoqing Pan,Khalil Amine,Zhengtang Luo +14 more
TL;DR: In this paper, an activity correlation with catalysts, electronic structure, in order to clarify the origin of reactivity for a series of transition metals supported on nitrogen-doped graphene as SACs for hydrogen evolution reaction (HER) by a combination of density functional theory calculations and electrochemical measurements.
References
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Journal ArticleDOI
Electrochemical Photolysis of Water at a Semiconductor Electrode
Akira Fujishima,Kenichi Honda +1 more
TL;DR: Water photolysis is investigated by exploiting the fact that water is transparent to visible light and cannot be decomposed directly, but only by radiation with wavelengths shorter than 190 nm.
Journal ArticleDOI
A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films
TL;DR: In this article, the authors describe a photovoltaic cell, created from low-to medium-purity materials through low-cost processes, which exhibits a commercially realistic energy-conversion efficiency.
Journal ArticleDOI
Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells
TL;DR: Two organolead halide perovskite nanocrystals were found to efficiently sensitize TiO(2) for visible-light conversion in photoelectrochemical cells, which exhibit strong band-gap absorptions as semiconductors.
Journal ArticleDOI
Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites
Michael M. Lee,Joël Teuscher,Tsutomu Miyasaka,Takurou N. Murakami,Takurou N. Murakami,Henry J. Snaith +5 more
TL;DR: A low-cost, solution-processable solar cell, based on a highly crystalline perovskite absorber with intense visible to near-infrared absorptivity, that has a power conversion efficiency of 10.9% in a single-junction device under simulated full sunlight is reported.
Journal ArticleDOI
Sequential deposition as a route to high-performance perovskite-sensitized solar cells
Julian Burschka,Norman Pellet,Norman Pellet,Soo-Jin Moon,Robin Humphry-Baker,Peng Gao,Mohammad Khaja Nazeeruddin,Michael Grätzel +7 more
TL;DR: A sequential deposition method for the formation of the perovskite pigment within the porous metal oxide film that greatly increases the reproducibility of their performance and allows the fabrication of solid-state mesoscopic solar cells with unprecedented power conversion efficiencies and high stability.
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Electrochemical Photolysis of Water at a Semiconductor Electrode
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