A General Carboxylate‐Assisted Approach to Boost the ORR Performance of ZIF‐Derived Fe/N/C Catalysts for Proton Exchange Membrane Fuel Cells
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DOI: 10.1002/adfm.202009645
Abstract: An Fe/N/C catalyst derived from the pyrolysis of metal–organic frameworks, for example, a zeolitic‐imidazolate‐framework‐8 (ZIF‐8), has been regarded as one of the most promising non‐precious metal catalysts toward oxygen reduction reaction (ORR) in proton exchange… read more here.
Keywords: carboxylate assisted; zif; exchange membrane; proton exchange ... See more keywords
An Initial Covalent Organic Polymer with Closed‐F Edges Directly for Proton‐Exchange‐Membrane Fuel Cells
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DOI: 10.1002/adma.202204570
Abstract: Covalent organic polymers (COPs) are a class of rising electrocatalysts for the oxygen reduction reaction (ORR) due to the atomically metrical control of the organic molecular components along with highly architectural robustness and thermodynamic stability… read more here.
Keywords: exchange membrane; proton exchange; closed edges; covalent organic ... See more keywords
Unlocking High Capacity and Fast Na+ Diffusion of HxCrS2 by Proton‐Exchange Pretreatment
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DOI: 10.1002/adma.202209811
Abstract: This study presents a new material, “HxCrS2” (denotes approximate composition) formed by proton‐exchange of NaCrS2 which has a measured capacity of 728 mAh g−1 with significant improvements to capacity retention, sustaining over 700 mAh g−1… read more here.
Keywords: hxcrs2; capacity; fast diffusion; proton exchange ... See more keywords
Tensile‐Strained RuO2 Loaded on Antimony‐Tin Oxide by Fast Quenching for Proton‐Exchange Membrane Water Electrolyzer
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DOI: 10.1002/advs.202201654
Abstract: Future energy demands for green hydrogen have fueled intensive research on proton‐exchange membrane water electrolyzers (PEMWE). However, the sluggish oxygen evolution reaction (OER) and highly corrosive environment on the anode side narrow the catalysts to… read more here.
Keywords: exchange membrane; antimony tin; fast quenching; proton exchange ... See more keywords
Low‐Voltage Driven Ionic Polymer‐Metal Composite Actuators: Structures, Materials, and Applications
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DOI: 10.1002/advs.202206135
Abstract: With the characteristics of low driving voltage, light weight, and flexibility, ionic polymer‐metal composites (IPMCs) have attracted much attention as excellent candidates for artificial muscle materials in the fields of biomedical devices, flexible robots, and… read more here.
Keywords: proton exchange; polymer metal; low voltage; ionic polymer ... See more keywords
Upgrading of Ethanol to 1,1-Diethoxyethane by Proton Exchange Membrane Electrolysis.
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DOI: 10.1002/cssc.202101188
Abstract: The direct acetalization of ethanol is a significant challenge for upgrading bioethanol to value-added chemicals. Herein, 1,1-diethoxyethane (DEE) was selectively synthesized by the electrolysis of ethanol using a proton exchange membrane (PEM) reactor. In the… read more here.
Keywords: proton exchange; exchange membrane; diethoxyethane; electrolysis ... See more keywords
Efficiently Boosted Proton Transfer of Proton Exchange Membrane by Interconnected and Zwitterion Functionalized Covalent Porous Material Structure.
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DOI: 10.1002/cssc.202202279
Abstract: Excellent proton conducting accelerators are indispensable for efficiently boosting proton conductivities of proton exchange membranes (PEMs). Covalent porous materials (CPMs) possess adjustable functionalities and well-ordered porosities, which hold grand promise as effective proton conductive accelerators.… read more here.
Keywords: proton exchange; structure; proton transfer; zwitterion ... See more keywords
Membrane‐hydration‐state detection in proton exchange membrane fuel cells using improved ambient‐condition‐based dynamic model
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Energy Research"
DOI: 10.1002/er.4927
Abstract: Proton‐exchange‐membrane fuel cells (PEMFCs) are a popular source of alternative energy because of their operational reliability and compactness. This paper presents an improved model to represent the semi‐empirical voltage of PEMFCs to overcome the limitations… read more here.
Keywords: membrane; water; exchange membrane; model ... See more keywords
Facile electrochemical preparation of nonprecious Co‐Cu alloy catalysts for hydrogen production in proton exchange membrane water electrolysis
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DOI: 10.1002/er.5099
Abstract: To realize nonprecious‐metal catalysts with practical applicability for the hydrogen evolution reaction (HER), improved corrosion resistance and catalytic activity are required. In this study, composition‐controlled Co‐Cu alloys were fabricated by electrodeposition for use as HER… read more here.
Keywords: exchange membrane; proton exchange; membrane water;
Optimization of channel structure for proton exchange membrane fuel cells based on a three‐dimensional two‐phase flow model
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DOI: 10.1002/er.6415
Abstract: The flow in the channel of the proton exchange membrane fuel cell (PEMFC) is very complicated, but important which determines the efficiency of mass transfer and water management and directly affects the performance of PEMFC.… read more here.
Keywords: channel; flow; exchange membrane; model ... See more keywords
Numerical simulation of particulate matter interaction with the gas diffusion layer of proton‐exchange membrane fuel cells under various relative humidity conditions
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DOI: 10.1002/er.6591
Abstract: Proton‐exchange membrane fuel cell (PEMFC) operation and performance degrade when particulate matter (PM) present in the reactant gas stream is collected in the porous structure of the gas diffusion layers (GDL). Interaction of PM carried… read more here.
Keywords: humidity; diffusion; exchange membrane; proton exchange ... See more keywords