Journal ArticleDOI
A bifunctional hexa-filamentous microfibril multimetallic foam: an unconventional high-performance electrode for total water splitting under industrial operation conditions
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In this paper, a surface rough-cellulose-based bamboo fiber with unique and naturally-convoluted morphology is adopted for the fabrication of catalytically active cobalt substrates for water splitting.Abstract:
Cellulose in various forms possesses high strength, low density, and high aspect ratio with a three-dimensional open network structure, making them ideal candidates as current collectors in energy conversion application. Herein, a surface rough-cellulose-based bamboo fiber with unique and naturally-convoluted morphology is adopted for the fabrication of catalytically active cobalt substrates for water splitting. For the efficient evolution of hydrogen and oxygen, cobalt-based bimetallic alloys, namely, cobalt–molybdenum and cobalt–iron, were electrodeposited. The proposed system possesses a highly macro-porous network of hexa-filament micro-fibrils that demonstrate exceptional catalytic activities. In quantitative terms, the anodic and cathodic current density of 50 and −10 mA cm−2 at respective overpotentials (η) of 250 and 46 mV with a low activation energy (Ea) of 28 kJ mol−1 were achieved. Moreover, when operated under harsh industrial standards of 5 M KOH@343 K, electrodes demonstrate excellent water electrolyzing catalytic activities (η-100(HER) = 147 mV; η100(OER) = 209 mV). This work, thus, promises a new strategy for designing electrode systems that are highly efficient as well as economical as the substrate was obtained from a ubiquitous earth-friendly material for energy conversion application.read more
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Electrochemical Water Splitting: Bridging the Gaps between Fundamental Research and Industrial Applications
TL;DR: In this article , a review of the very recent endeavors to bridge the gaps between fundamental research and industrial applications for water electrolysis is presented, which reveal the progress of moving the practical applications forward and accelerating synergies between material science and engineering.
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Ru-tweaking of non-precious materials: The tale of a strategy that ensures both cost and energy efficiency in electrocatalytic water splitting
TL;DR: In this article, a detailed review of water splitting electrocatalysis and mechanisms involving Ru is given with insights on the phenomena that make it an active interface for water electrolysis, and the same is also benchmarked against their performance at different conditions.
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Biopolymer-derived (nano)catalysts for hydrogen evolution via hydrolysis of hydrides and electrochemical and photocatalytic techniques: A review
Babak Jaleh,Mahmoud Nasrollahzadeh,Atefeh Nasri,Mahtab Eslamipanah,Aida Moradi,Zahra Nezafat +5 more
TL;DR: In this article, the three non-polluting and economical techniques, that is, electrochemical hydrogen evolution reaction (HER), photocatalytic technique, and hydrolysis of hydrides, are reviewed in this paper.
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Corrosion of monometallic iron- and nickel-based electrocatalysts for the alkaline oxygen evolution reaction: A review
TL;DR: In this paper, the authors review the corrosion of five types of monometallic Fe-and Ni-based OER catalysts: pure metals, oxides, (oxy)hydroxides, phosphides, and sulfides.
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Synergistically Coupled CoMo/CoMoP Electrocatalyst for Highly Efficient and Stable Overall Water Splitting.
TL;DR: In this paper , a novel heterostructure electrocatalyst composed of cobalt-molybdenum (CoMo) alloy particles integrated with CoMoP nanosheets via the method of template-assisted conversion, followed by electrodeposition.
References
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Journal ArticleDOI
Structural absorption by barbule microstructures of super black bird of paradise feathers
TL;DR: Physical structure is known to contribute to the appearance of bird plumage through structural color and specular reflection, but a third mechanism, structural absorption, leads to low reflectance and super black color in birds of paradise feathers.
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Benchmarking Hydrogen Evolving Reaction and Oxygen Evolving Reaction Electrocatalysts for Solar Water Splitting Devices
Charles C. L. McCrory,Suho Jung,Ivonne M. Ferrer,Shawn Chatman,Jonas C. Peters,Thomas F. Jaramillo +5 more
TL;DR: A standard protocol is used as a primary screen for evaluating the activity, short-term (2 h) stability, and electrochemically active surface area (ECSA) of 18 and 26 electrocatalysts for the hydrogen evolution reaction (HER and OER) under conditions relevant to an integrated solar water-splitting device in aqueous acidic or alkaline solution.
Journal ArticleDOI
Efficient generation of mouse models of human diseases via ABE- and BE-mediated base editing
Zhen Liu,Zongyang Lu,Guang Yang,Shisheng Huang,Guanglei Li,S. M. Feng,Yajing Liu,Jianan Li,Wenxia Yu,Yu Zhang,Jia Chen,Qiang Sun,Xingxu Huang,Xingxu Huang +13 more
TL;DR: In vivo generation of mouse models carrying clinically relevant mutations using C→T and A→G editors is demonstrated, making it feasible to model and potentially cure relevant genetic diseases.
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Self-Supported Nanoporous Cobalt Phosphide Nanowire Arrays: An Efficient 3D Hydrogen-Evolving Cathode over the Wide Range of pH 0–14
TL;DR: The topotactic fabrication of self-supported nanoporous cobalt phosphide nanowire arrays on carbon cloth via low-temperature phosphidation of the corresponding Co(OH)F/CC precursor offers excellent catalytic performance and durability under neutral and basic conditions.
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An Investigation of Thin-Film Ni–Fe Oxide Catalysts for the Electrochemical Evolution of Oxygen
TL;DR: Observations suggest that the OER is catalyzed by Ni in Ni-Fe films and that the presence of Fe alters the redox properties of Ni, causing a positive shift in the potential at which Ni(OH)2/NiOOH redox occurs.