Results 91 to 100 of about 122,035 (305)

Activation strategies of water-splitting electrocatalysts

open access: yes, 2020
Electrocatalysts featuring high activity, selectivity and stability are urgently needed in solar-electricity powered energy-conversion technologies. In the past decade, various electrocatalysts have been demonstrated to be electrocatalytically active ...
Zhao, Huijun   +5 more
core   +1 more source

Strategies for designing more efficient electrocatalysts towards the urea oxidation reaction

open access: yes, 2022
The urea oxidation reaction (UOR) is a pivotal half-reaction for urea-assisted water splitting to produce hydrogen, direct urea fuel cells and electrochemical degradation of urea-containing wastewater.
Zhang, Huaiyu   +7 more
core   +1 more source

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

open access: yesAdvanced Functional Materials, EarlyView.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies   +2 more
wiley   +1 more source

Iron Sulfide Materials: Catalysts for Electrochemical Hydrogen Evolution

open access: yesInorganics, 2019
The chemical challenge of economically splitting water into molecular hydrogen and oxygen requires continuous development of more efficient, less-toxic, and cheaper catalyst materials.
Dominikus Heift
doaj   +1 more source

Rapid Synthesis of Phase-Engineered Tungsten Carbide Electrocatalysts via Flash Joule Heating for High-Current-Density Hydrogen Evolution [PDF]

open access: yes
Fabricating durable and high-performance electrocatalysts operating at high current densities for industrial acidic hydrogen evolution remains a daunting challenge.
Kyeongjae, Cho   +6 more
core   +2 more sources

Nitride MXenes Beyond Carbides: Bridging the Gap Between Computational Prediction and Experimental Realization

open access: yesAdvanced Functional Materials, EarlyView.
Nitride MXenes remain constrained by a persistent gap between computational prediction and experimental realization. This Review identifies the thermodynamic, kinetic, and chemical barriers limiting their synthesis, critically evaluates emerging fabrication routes, and proposes a multidimensional computational‐experimental framework to accelerate the ...
Naresh Varnakavi, Masoud Soroush
wiley   +1 more source

Core–Shell Structured NiFeSn@NiFe (Oxy)Hydroxide Nanospheres from an Electrochemical Strategy for Electrocatalytic Oxygen Evolution Reaction

open access: yesAdvanced Science, 2020
Efficient electrocatalysts for the oxygen evolution reaction (OER) are highly desirable because of the intrinsically sluggish kinetics of OER. Herein, core–shell structured nanospheres of NiFexSn@NiFe (oxy)hydroxide (denoted as NiFexSn‐A) are prepared as
Mingxing Chen   +3 more
doaj   +1 more source

Rotating electrode methods and oxygen reduction electrocatalysts

open access: yes, 2014
Rotating disk electrode (RDE) and rotating ring-disk electrode (RRDE) techniques are one kind of the important and commonly used methods in electrochemical science and technology, particularly, in the fundamental understanding of electrochemical ...
Yin, Geping   +5 more
core   +1 more source

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

open access: yesAdvanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu   +3 more
wiley   +1 more source

Applicability of analytical protocols for the characterisation of carbon-supported platinum group metal fuel cell electrocatalysts

open access: yesSouth African Journal of Science, 2009
The nanoparticulate size of fuel cell electrocatalysts raises significant challenges in the analytical techniques used in their structural and electrochemical characterisation. For this reason, the applicability of analytical protocols in the qualitative
M. Williams   +5 more
doaj  

Home - About - Disclaimer - Privacy