Results 151 to 160 of about 106,519 (399)

Modification Strategies of Carbon‐Based Electrodes From Structural Regulation to Multifunctional Integration

open access: yesAdvanced Science, EarlyView.
Tracing the evolution from structural regulation to multifunctional integration, this paper systematically analyzes modification strategies for carbon‐based electrodes. It evaluates how element doping, surface functionalization, and composite material design affect the electrode performance, and offers perspectives on future applications and challenges
Yunlei Wang   +4 more
wiley   +1 more source

Fe/N‐Doped Carbon with Nearly Ordered Mesopores and Tunable Particle Sizes as Model Catalysts for Quantitative Evaluation of Electrocatalytic Active Sites

open access: yesAdvanced Science, EarlyView.
This study is dedicated to the design and synthesis of MOF‐derived mesoporous Fe/N‐doped carbons as model catalysts, aiming to quantitatively evaluate the utilization of active sites in the ORR. Through modulation followed by pyrolysis, we successfully prepare size‐tunable Fe/MNC‐x with doped iron atoms and mesoporous structures. The smaller Fe/MNC‐250
Hongjuan Zhang   +7 more
wiley   +1 more source

Analytical model for space constrained optimization of proton exchange membrane fuel cells [abstract] [PDF]

open access: yes, 2006
only availableHydrogen fuel cells are currently being looked at as one of the energy conversion devices of the future. Of the different fuel cell varieties Proton Exchange Membrane (PEM) technology, is the most promising given its high efficiency and ...
Bajpayee, Anurag
core  

Beyond Sabatier: Multiplicate Spillover Phenomena for Manipulating Catalytic Dynamics in Various Electrocatalysis

open access: yesAdvanced Science, EarlyView.
Various spillover‐mediated electrocatalytic reactions, such as hydrogen and oxygen evolution, carbon dioxide and nitrogen reduction, and methanol oxidization reactions, are systematically summarized. Abstract Spillover phenomenon, which is characterized by the dynamic migration of active species across catalyst surfaces, provides a promising avenue to ...
Di Wang   +5 more
wiley   +1 more source

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

open access: yesAdvanced Science, EarlyView.
Laser induced graphene offers a scalable route to flexible, porous gas sensor with tunable properties and self heating functionality. This summarizes the overview of the design and application landscape of LIG‐based wearable gas sensor in healthcare. ABSTRACT Direct laser irradiation of carbonaceous precursors such as polyimide and wood is a scalable ...
Md Abu Sayeed Biswas   +6 more
wiley   +1 more source

Simulation of novel Pt-M nanocatalysis for proton exchange membrane fuel cells

open access: yesAIP Advances
To enhance proton exchange membrane fuel cells, an ultra-thin cathode catalytic layer based on PtPdCu nanowires is analyzed. The purpose is to optimize fuel cell performance by analyzing key parameters of the catalytic layer in detail, such as thickness ...
Yusong He, Minli Bai
doaj   +1 more source

Combining Electrochemical Reduction with Biosynthesis for Directed Conversion of CO2 into a Library of C3 Chemicals

open access: yesAdvanced Science, EarlyView.
In the H‐type electrolytic cell, carbon dioxide is reduced to acetic acid via electro‐microbial catalysis. The simply processed acetic acid is further converted through biological fermentation into high‐value‐added products, including acrylic acid, L‐lactic acid, and β‐alanine.
Kaixing Xiao   +8 more
wiley   +1 more source

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