Electrocatalysis for the oxygen evolution reaction: recent development and future perspectives

Chemical Society Reviews, Год журнала: 2017, Номер 46(2), С. 337 - 365

Опубликована: Янв. 1, 2017

We review the fundamental aspects of metal oxides, chalcogenides and pnictides as effective electrocatalysts for oxygen evolution reaction.

Язык: Английский

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Particulate Photocatalysts for Light-Driven Water Splitting: Mechanisms, Challenges, and Design Strategies

Chemical Reviews, Год журнала: 2019, Номер 120(2), С. 919 - 985

Опубликована: Авг. 8, 2019

Solar-driven water splitting provides a leading approach to store the abundant yet intermittent solar energy and produce hydrogen as clean sustainable carrier. A straightforward route light-driven is apply self-supported particulate photocatalysts, which expected allow be competitive with fossil-fuel-derived on levelized cost basis. More importantly, powder-based systems can lend themselves making functional panels large scale while retaining intrinsic activity of photocatalyst. However, all attempts generate via water-splitting date have unfortunately fallen short efficiency values required for practical applications. Photocatalysis photocatalyst particles involves three sequential steps: (i) absorption photons higher energies than bandgap excitation electron-hole pairs in particles, (ii) charge separation migration these photoexcited carriers, (iii) surface chemical reactions based carriers. In this review, we focus challenges each step summarize material design strategies overcome obstacles limitations. This review illustrates that it possible employ fundamental principles underlying photosynthesis tools materials science prepare photocatalysts overall splitting.

Язык: Английский

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Spinels: Controlled Preparation, Oxygen Reduction/Evolution Reaction Application, and Beyond

Chemical Reviews, Год журнала: 2017, Номер 117(15), С. 10121 - 10211

Опубликована: Июль 26, 2017

Spinels with the formula of AB2O4 (where A and B are metal ions) properties magnetism, optics, electricity, catalysis have taken significant roles in applications data storage, biotechnology, electronics, laser, sensor, conversion reaction, energy storage/conversion, which largely depend on their precise structures compositions. In this review, various spinels controlled preparations oxygen reduction/evolution reaction (ORR/OER) beyond summarized. First, composition structure introduced. Then, recent advances preparation solid-, solution-, vapor-phase methods summarized, new particularly highlighted. The physicochemical characteristics such as compositions, structures, morphologies, defects, substrates been rationally regulated through approaches. This regulation can yield improved ORR/OER catalytic activities, further accelerate speed, prolong life, narrow polarization fuel cells, metal-air batteries, water splitting devices. Finally, magnetic, optical, electrical, OER/ORR also discussed. future considered to be closely related environmental issues, will aided by development species advanced characterizations.

Язык: Английский

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Precision and correctness in the evaluation of electrocatalytic water splitting: revisiting activity parameters with a critical assessment

Energy & Environmental Science, Год журнала: 2018, Номер 11(4), С. 744 - 771

Опубликована: Янв. 1, 2018

To avoid unnoticed errors made by researchers who are working in the area of nanostructured materials for water splitting, correct and precise use evaluation parameters is discussed detail, stating their acceptability validity.

Язык: Английский

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Heterostructures for Electrochemical Hydrogen Evolution Reaction: A Review

Advanced Functional Materials, Год журнала: 2018, Номер 28(43)

Опубликована: Авг. 16, 2018

Abstract Developing sustainable and renewable energy sources along with efficient storage conversion technologies is vital to address environmental challenges. Electrochemical water splitting coupling grid‐scale harvesting becoming one of the most promising approaches. Besides, hydrogen highest mass‐energy density any fuel regarded as ultimate clean carrier. The realization practical depends heavily on development low‐cost, highly active, durable catalysts for evolution reactions (HERs) oxygen (OERs). Recently, heterostructured catalysts, which are generally composed electrochemical active materials various functional additives, have demonstrated extraordinary electrocatalytic performance toward HER OER, particularly a number precious‐metal‐free heterostructures delivered comparable activity precious‐metal‐based catalysts. Herein, an overview presented recent research progress It starts summarizing fundamentals approaches evaluating activity. Then, design synthesis heterostructures, performance, related mechanisms enhancement discussed. Finally, future opportunities challenges highlighted from points view both fundamental understandings applications.

Язык: Английский

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High-performance bifunctional porous non-noble metal phosphide catalyst for overall water splitting

Nature Communications, Год журнала: 2018, Номер 9(1)

Опубликована: Июнь 25, 2018

Water electrolysis is an advanced energy conversion technology to produce hydrogen as a clean and sustainable chemical fuel, which potentially stores the abundant but intermittent renewable sources scalably. Since overall water splitting uphill reaction in low efficiency, innovative breakthroughs are desirable greatly improve efficiency by rationally designing non-precious metal-based robust bifunctional catalysts for promoting both cathodic evolution anodic oxygen reactions. We report hybrid catalyst constructed iron dinickel phosphides on nickel foams that drives reactions well base, thus substantially expedites at 10 mA cm-2 with 1.42 V, outperforms integrated iridium (IV) oxide platinum couple (1.57 V), among best activities currently. Especially, it delivers 500 1.72 V without decay even after durability test 40 h, providing great potential large-scale applications.

Язык: Английский

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Interfacial water reorganization as a pH-dependent descriptor of the hydrogen evolution rate on platinum electrodes

Nature Energy, Год журнала: 2017, Номер 2(4)

Опубликована: Март 20, 2017

Язык: Английский

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Water electrolysis: from textbook knowledge to the latest scientific strategies and industrial developments

Chemical Society Reviews, Год журнала: 2022, Номер 51(11), С. 4583 - 4762

Опубликована: Янв. 1, 2022

Replacing fossil fuels with energy sources and carriers that are sustainable, environmentally benign, affordable is amongst the most pressing challenges for future socio-economic development.

Язык: Английский

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NiFe‐Based (Oxy)hydroxide Catalysts for Oxygen Evolution Reaction in Non‐Acidic Electrolytes

Advanced Energy Materials, Год журнала: 2016, Номер 6(23)

Опубликована: Июль 4, 2016

NiFe‐based (oxy)hydroxides are highly active catalysts for the oxygen evolution reaction in alkaline electrolyte solutions. These can be synthesized different ways leading to nanomaterials and thin films with distinct morphologies, stoichiometries long‐range order. Notably, their structure evolves under operating conditions respect as‐synthesized state. Therefore, many researchers have dedicated efforts on identification of catalytic sites employing operando experimental methods theoretical calculations. investigations pivotal rationally design materials outstanding performances that will constitute anodes practical commercial electrolyzers. The family oxyhydroxide reported recent years is addressed actual state research special focus understanding oxygen‐evolution‐reaction phase described. Finally, an overview proposed mechanisms occurring electrocatalysts provided.

Язык: Английский

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Photocatalytic Water Splitting: Quantitative Approaches toward Photocatalyst by Design

ACS Catalysis, Год журнала: 2017, Номер 7(11), С. 8006 - 8022

Опубликована: Окт. 11, 2017

A widely used term, "photocatalysis", generally addresses photocatalytic (energetically downhill) and photosynthetic uphill) reactions refers to the use of photonic energy as a driving force for chemical transformations, i.e., electron reorganization form/break bonds. Although there are many such important reactions, this contribution focuses on fundamental aspects water splitting into hydrogen oxygen by using light from solar spectrum, which is one most investigated reactions. Photocatalytic considered be artificial photosynthesis that produces fuel because reaction mimics nature's not only in its redox type but also thermodynamics (water splitting: 1.23 eV vs glucose formation: 1.24 eV). To achieve efficient splitting, all parameters, though involved at different time scales spatial resolutions, should optimized overall efficiency obtained multiplication these efficiencies. The purpose Review provide guidelines concept, "photocatalysis design", opposite "black box screening"; concept making quantitative descriptions associated physical properties determine events/parameters have impact improving performance, contrast arbitrarily ranking photocatalyst materials. First, can quantitatively measured or calculated identified. Second, quantities identified determined performing adequate measurements and/or calculations. Third, values integrated equations so kinetic/energetic bottlenecks specific properties/processes determined, then altered further improve process. Accumulation knowledge ranging fields solid-state physics electrochemistry multidisciplinary approach conduct modeling manner required fully understand photocatalysis.

Язык: Английский

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