Results 31 to 40 of about 10,893 (255)

Electrospun Composite Proton-Exchange and Anion-Exchange Membranes for Fuel Cells

Energies, 2021
A fuel cell is an electrochemical device that converts the chemical energy of a fuel and oxidant into electricity. Cation-exchange and anion-exchange membranes play an important role in hydrogen fed proton-exchange membrane (PEM) and anion-exchange ...
Zhihao Shang, Ryszard Wycisk, Peter Pintauro   +2 more
doaj   +1 more source

Research progress of key materials in proton exchange membrane fuel cell

Cailiao gongcheng, 2022
Fuel cell, which directly enables the generation of electricity from the conversion of the fuel through an electrochemical reaction at the electrode and electrolyte interface, without going through the heat engine process, is an incredibly powerful ...
DU Zhenzhen, WANG Jun, WANG Jing, YU Fan, LI Jiongli, WANG Xudong   +5 more
doaj   +1 more source

Functionalizing Micro‐to‐Mesoscopic Electrode Architectures for Regulating Electron Transfer Behaviors in Electrocatalysis

Advanced Functional Materials, EarlyView.
A systematic review is conducted to assess the influence of electrode architecture across micro‐ to mesoscopic length scales on electron‐transfer pathways in electrocatalysis. We discuss the structure‐activity relationships in electrocatalytic applications, including resource recovery and environmental remediation, and provide cost‐effective, efficient
Manshu Zhao, Jiaojiao Zhang, Shideng Yuan, Xinmeng Yu, Keming Wan, Xiaoguang Duan, Zhining Wang   +6 more
wiley   +1 more source

Novel PVA/La2Ce2O7 hybrid nanocomposite membranes for application in proton exchange membrane fuel cells [PDF]

Hydrogen, Fuel Cell & Energy Storage, 2014
Proton exchange membrane fuel cells (PEMFCs) are electrochemical devices that show the highest power densities compared to the other type of fuel cell.
Mehran Javanbakht, Khadijeh Hooshyari, Morteza Enhessari, Hossein Beydaghi   +3 more
doaj   +1 more source

Reactivation System for Proton-Exchange Membrane Fuel-Cells [PDF]

Energies, 2012
In recent years, Proton-Exchange Membrane Fuel Cells (PEMFCs) have been the focus of very intensive researches. Manufacturers of these alternative power sources propose a rejuvenation sequence after the FC has been operating at high power for a certain period of time.
Carlos Restrepo, Oriol Avino, Javier Calvente, Alfonso Romero, Miro Milanovic, Roberto Giral   +5 more
openaire   +4 more sources

Ultrafast Thermal Shock Synthesis of CuNiSnLa Medium‐Entropy Metallic Glass for Sustainable Nitrogen Fixation via Plasma‐Coupled Electrocatalysis

Advanced Functional Materials, EarlyView.
This work introduces an ultrafast thermal shock strategy to synthesize a CuNiSnLa medium‐entropy metallic glass (MEMG). The rapid heating and cooling process generates a robust, highly active catalyst for electrocatalytic nitrate reduction to ammonia (NRA).
Hongbo Chen, Peng‐Jun Deng, Yang Liu, Shenglong Huang, Shuo Sun, Haoxuan Li, Jiajia Lu, Panagiotis Tsiakaras   +7 more
wiley   +1 more source

Preparation of Sulfonated Polyarylene Ether Membranes Reinforced with Sulfonated Graphene Oxide as Proton Exchange Membranes in Polymer Electrolyte Fuel Cells [PDF]

Journal of Advanced Materials in Engineering
Introduction and Objectives: This study aimed to develop nanocomposite membranes based on sulfonated poly(arylene ether) (sPAE) and evaluate the effect of incorporating sulfonated graphene oxide (sGO) nanosheets on their physicochemical and ...
Maryam Oroujzadeh, Maryam Jalili Marand
doaj   +1 more source

2D Co‐Assembly of Solid Acids Enables Stable Superprotonic Conduction Above 260°C

Advanced Functional Materials, EarlyView.
A two‐dimensional co‐assembly strategy integrates antimony phosphate and phosphotungstic acid nanosheets into free‐standing inorganic lamellar membranes with confined acid–acid interfaces. The resulting interfacial hydrogen‐bond network enables anhydrous proton conductivity exceeding 0.1 S cm−1 at 260°C and supports stable high‐temperature fuel‐cell ...
Qiuning Li, Kaiqiang He, Dehua Dong, Fanmengjing Wang, Xiangcheng Liu, Zhikao Li, Jacek J. Jasieniak, Paul A. Webley, Huanting Wang   +8 more
wiley   +1 more source

Balancing Hydrophobicity and Hydrophilicity: Dual Filler‐Engineered Proton Exchange Membranes for Durable, High‐Power Fuel Cells

Advanced Functional Materials, EarlyView.
Polarity‐matched Zr–MOFs program Nafion's nanoscale morphology during solution casting. Hydrophilic UiO‐66 preserves hydrated pathways, while hydrophobic UiO‐67 increases the proton hopping sites by densifying ionic clusters. Combining both fillers yields a membrane that delivers 176 mS cm−1 conductivity, reaches 1.46 W cm−2 under 200 kPa, and triples ...
Yonghwi Cho, Yunseong Ji, Minkyu Choi, Junsu Kim, Yejin Kim, Su Jeong Lee, Wooyoung Choi, Choong Hoo Lee, Ju Yeon Kim, Ohchan Kwon, Hanim Kim, Du Yeol Ryu, Ki Chul Kim, Dae Woo Kim   +13 more
wiley   +1 more source

POM‐Based Water Splitting Catalyst Under Acid Conditions Driven by Its Assembly on Carbon Nanotubes

Advanced Materials, EarlyView.
A newly‐engineered POM‐based electrocatalyst incorporating non‐innocent counter cations exhibits fast kinetics for either the OER or HER under strongly acidic conditions (1 m H2SO4), depending on whether it is assembled on carbon nanotubes (1@CNT) or physically mixed with them (1/CNT). In water‐splitting tests using a two‐electrode setup, these systems
Eugenia P. Quirós‐Díez, Melanie Guillén‐Soler, Carlos Herreros‐Lucas, Alejandro López‐Moreno, José Manuel Vila‐Fungueiriño, Antonio Luis Llamas‐Saiz, Karol Strutyński, Manuel Melle‐Franco, María del Carmen Giménez‐López   +8 more
wiley   +1 more source