Results 31 to 40 of about 25,227 (196)
Spatial Engineering of Gas Diffusion Layers Overcomes Mass Transport Limitations in Fuel Cells
Advanced Science, EarlyView.ABSTRACT Mass transport limitations at high current densities hinder polymer electrolyte fuel cell (PEFC) performance due to inefficient water management and reactant distribution. Gas diffusion layer (GDL) perforation offers a potential solution as an alternative to complex flow‐field modifications.
Shangwei Zhou +12 more
wiley +1 more source
Advanced Science, EarlyView.A CCM‐based architectural strategy is introduced for high‐temperature PEM fuel cells, enabling MPL‐free carbon paper gas diffusion layers via decal‐transfer processing. By co‐engineering the CCM, GDL, and a G‐foam flow field, oxygen transport is enhanced while phosphoric‐acid leakage is suppressed, resulting in high power density and stable operation ...
Seongmin Cho +6 more
wiley +1 more source
, 2009 An effective ex-situ method for characterizing electrochemical durability of a gas diffusion layer (GDL) under simulated polymer electrolyte membrane fuel cell (PEMFC) conditions is reported in this article.
Chen, Guobao +4 more
core +1 more source
, 2021 In this work, we used our previously developed method for determination of oxygen mass transport coefficients (k) to evaluate the effects of the gas diffusion layer (GDL) structure and texture on oxygen mass transfer in a cathode electrode and on proton ...
T. Reshetenko, Bonnie L. Ben
semanticscholar +1 more source
V2CTx MXene as a Sacrificial Promoter for NiFe Catalyst for Anion Exchange Membrane Electrolyzers
Advanced Science, EarlyView.These findings demonstrate that V2CTx functions beyond passive conductive support as an active electronic participant whose structural legacy sustains durable performance even after vanadium leaching in Anion Exchange Membrane (AEM) Electrolysers. ABSTRACT Nickel‐iron layered double hydroxides (NiFe‐LDH) show excellent activity, their poor conductivity
Bastian Schmiedecke +12 more
wiley +1 more source
Two-Phase Flow Dynamics in a Gas Diffusion Layer - Gas Channel - Microporous Layer System
, 2020 We have shown in our former study [1] that ordered microstructures can improve the effective electrical conductivity and permeability in the gas diffusion layer (GDL).
Eller, Jens +4 more
core +2 more sources
High Free‐Volume Imidazole‐Based Ionomers for High‐Temperature Proton Exchange Membrane Fuel Cells
Advanced Science, EarlyView.High free‐volume imidazole‐based ionomers (PF4IM‐72) enable enhanced phosphoric acid uptake and efficient proton transport, delivering peak power densities of 0.645 W cm−2 at 160 °C and 0.838 W cm−2 at 200 °C in HT‐PEMFCs. This work highlights a promising platform for next‐generation ionomers with improved high‐temperature performance and stability ...
Ge Chao +7 more
wiley +1 more source
International Journal of Energy Research, 2020 Proton exchange membrane fuel cells (PEMFCs) can intensely lessen the emissions from the energy sector through environmentally friendly attributes. This evaluation paper summarizes the key additives of the PEMFC which are associated with water formation ...
P. Okonkwo, C. Otor
semanticscholar +1 more source
Operando Raman Spectroscopy Reveals Backpressure‐Controlled Dynamics in Diluted CO2 Electrolysis
Advanced Science, EarlyView.High backpressure operation governs the CO2 reduction reaction (eCO2RR) kinetics and selectivity, as well as the CO2 and water dynamics, as revealed through operando Raman spectroelectrochemical measurement. Operating eCO2RR near diffusion‐limited conditions provides a platform for investigating the competition between eCO2RR and the hydrogen evolution
Muhammad Adib Abdillah Mahbub +7 more
wiley +1 more source
Permeability of a PEMFC Gas Diffusion Layer Based on Morphology
, 2011 The transport of gases and water through the gas diffusion layer of a PEMFC was investigated with a focus on the morphological characteristics of the carbon paper GDL.
Toshiaki Murahashi, Enju Nishiyama
core +1 more source