Results 121 to 130 of about 30,361 (249)

A coated Nafion membrane with a PVdF copolymer/Nafion blend for direct methanol fuel cells (DMFCs)

, 2005
To enhance the compatibility between electrode and membrane and also reduce methanol crossover from anode to cathode in direct methanol fuel cells, a Nafion membrane coated with a PVdF copolymer/Nafion blend has been prepared and characterized.
Choi, NS, Park, JK, Sung, YE, Cho, KY, Sung, SJ, Jung, HY, Choi, JH   +6 more
core   +1 more source

Overcoming Out‐of‐Plane Conduction by Changing Nanosheet Morphology

Advanced Science, EarlyView.
HTaWO6 membrane made of stacked nanotubes exhibits high out‐of‐plane proton conductivity of 1.7 mS/cm. High current density (1.26 A cm−2) and power density (294 mW cm−2) indicate the potential as a fuel‐cell electrolyte. The morphology‐driven strategy establishes topology engineering as a new design principle for efficient ion transport in two ...
Yuichi Sakuda, Kazuto Hatakeyama, Asahi Yuji, Tatsuki Tsugawa, Keigo Ueno, Satsuki Tomatsu, Zulita Dian Utami, Shintaro Ida   +7 more
wiley   +1 more source

The effect of sorbates(water,methanol,TEOS)on the preparation of Nafion/SiO2 composite membrane via in situ sol-gel reaction

, 2009
Nafion/SiO2 composite membranes were studied for the H2/Air proton exchange membrane fuel cells operated above 100℃. SiO2/Nafion 212 composite membranes were prepared via in situ sol-gel reaction of tetracthylorthosilicate(TEOS)on sorption behavior of ...
李晓锦, 邵志刚, 衣宝廉, 柯长春   +3 more
core  

Protonation Modification of Commercial OPBI as Binders Toward High‐Performance High‐Temperature PEM Fuel Cells

Advanced Science, EarlyView.
Commercial OPBI binders is regulated via a facile formic‐acid protonation strategy without disrupting the polymer backbone. Protonation introduces positively charged benzimidazole sites, inducing interchain electrostatic repulsion that loosens chain packing, enlarges intermolecular spacing, and promotes uniform binder dispersion over catalyst surfaces.
Jinzhen Huang, Minhui Liang, Jingjing Lin, Zhihuan Pan, Jinwu Peng, Lei Wang   +5 more
wiley   +1 more source

Deciphering Intricacies in Directional CO2 Conversion From Electrolysis to CO2 Batteries

Advanced Energy Materials, EarlyView.
This review will delve into the inherent connections and distinctions of CO2‐directed conversion in ECO2RR and CO2 batteries, in terms of product types, catalyst selection, catalytic mechanisms, and electrochemical performances, while proposing a benchmarking framework for the evaluation of CO2 batteries and innovative CO2 battery configurations for ...
Changfan Xu, Huaping Zhao, Lizhuang Chen, Weidong Shi, Guosheng Shao, Yong Lei   +5 more
wiley   +1 more source

Morphology and Structure of PEDOT:Nafion: Insights from Experiment and Molecular Dynamics Simulations

Macromolecular Materials and Engineering
Poly(3,4‐ethylenedioxythiophene) (PEDOT)/Nafion is a promising mixed ionic–electronic conducting polymer. However, in contrast to the well‐studied PEDOT:poly(styrenesulfonate) (PSS) system, the nanoscale morphology and the relationship between ...
Mohsen Modarresi, Mirko Prato, Stefano Carli, Edoardo Marchini, Igor Zozoulenko   +4 more
doaj   +1 more source

Facile synthesis of Nafion-stabilized iridium nanoparticles and its direct use for fuel cell and water electrolyzers

, 2009
Nanoparticles (NPs) are of great interest for their promise use as advanced materials，and an effective way to obtain a better control of the shape, particle size and size distribution is using stabilizes.
张益宁, 钟和香, 马海鹏, 马原蔚, 张华民, 张宇   +5 more
core  

A Compact Hollow Fiber Electrode Assembly Architecture for Continuous Electrochemical Marine Carbon Dioxide Removal

Advanced Energy Materials, EarlyView.
A coaxial, membrane‐integrated hollow fiber electrode assembly (HFEA) is developed for continuous marine carbon mineralization. By utilizing a sub‐millimeter inter‐electrode gap, the HFEA minimizes Ohmic losses, achieving 50% energy reduction and over 85% DIC removal.
Inhwan Park, Young Hun Lee, Jung Hun Lee, Seung‐Jeong Oh, T. Alan Hatton, Dong‐Yeun Koh   +5 more
wiley   +1 more source

Modulation of Local Environment for Selective Bicarbonate Conversion to Multi‐Carbon Products

Advanced Energy Materials, EarlyView.
Highly porous Cu electrode partially coated with an ionomer/carbon composite enables efficient conversion of bicarbonate to multi‐carbon products. By regulating the local reaction microenvironment, this strategy overcomes selectivity and reaction‐rate limitations, achieving Faradaic efficiencies of 43% for ethylene and 60% for total multi‐carbon ...
Tai Nguyen, Anh N. Nguyen, Guorui Gao, Jackson Crane, Thành Trần‐Phú, Gelson Tavares da Silva, Aldo Gonzalez‐Lopez, Hung Lai, Khac Huy Dinh, Duc‐Minh Phan‐Pham, Martin Guay, Carlos Escobedo, Rosalie K. Hocking, Jonathan Raisin, Lucia H. Mascaro, Cao‐Thang Dinh   +15 more
wiley   +1 more source

Ultrathin Aluminum–Air Batteries via Hygroscopic Electrolytes for Continuous Operation of Imperceptible On‐Skin Electronics

Advanced Energy Materials, EarlyView.
This study presents ultrathin, high‐capacity aluminum‐air batteries (AABs) for self‐sustaining, skin‐conformal electronics. By utilizing ambient moisture and oxygen alongside a LiCl‐based hygroscopic hydrogel electrolyte, the design significantly reduces battery thickness while preventing dehydration and Al self‐corrosion.
Jaeil Park, Inho Lee, Namhee Kim, Wonseok Shin, Joo Sung Kim, Daegun Kim, Giwon Lee, Jinhan Cho, Hoon‐Hee Ryu, Myung‐Han Yoon, Seung Joon Yoo, Woo‐Jin Song, Sungjun Park   +12 more
wiley   +1 more source