Results 21 to 30 of about 18,542 (224)

New modified Nafion-bisphosphonic acid composite membranes for enhanced proton conductivity and PEMFC performance [PDF]

, 2021
Proton exchange membranes remain a crucial material and a key challenge to fuel cell science and technology. In this work, new Nafion membranes are prepared by a casting method using aryl- or azaheteroaromatic bisphosphonate compounds as dopants.
de Sá, Ana I., Ortiz Martínez, Víctor Manuel, Teixeira , Antonio P.S., Ortiz Uribe, Inmaculada, Teixeira, Fátima Candeias, Rangel, Carmen M., Ortiz Sainz de Aja, Alfredo   +6 more
core   +1 more source

Investigation on the effects of carbon monoxide contamination towards PEMFC transport phenomena using a kinetics-transport bridging model

Journal of Thermal Science and Technology, 2014
This paper reports a numerical study on the effects of CO contamination towards the distribution of chemical species, surface coverage, current density and temperature inside a PEMFC using a kinetics-transport bridging model.
Saiful HASMADY, Kazuyoshi FUSHINOBU
doaj   +1 more source

Selected Aspects of Designing Modular PEMFC Stacks as Power Sources for Unmanned Aerial Vehicles

Applied Sciences, 2021
Two types of air-cooled modular polymer membrane fuel cells (PEMFC) stacks with full equipment were constructed and investigated as components of hybrid power sources.
Magdalena Dudek, Bartłomiej Lis, Andrzej Raźniak, Mariusz Krauz, Michał Kawalec   +4 more
doaj   +1 more source

Optimization of Polymer Electrolyte Membrane Fuel Cell Performance by Geometrical Changes [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2017
Three-dimensional computational fluid dynamics in house-code of a Polymer Electrolyte Membrane Fuel Cell (PEMFC) has been developed. The conservation equations are numerically solved using finite volume technique.
Nima Ahmadi, Sajad Rezazadeh, Mehdi Asgharikia,, Ehsan Shabahangnia   +3 more
doaj  

Thermal management of metal hydride hydrogen storage tank coupled with proton exchange membrane fuel cells

Case Studies in Thermal Engineering, 2023
Metal hydride (MH), considered a promising hydrogen storage material, has received wide attention. As an efficient device for hydrogen energy utilization, a proton exchange membrane fuel cell (PEMFC) generates power and releases waste heat.
Liang Tong, Chengqing Yuan, Tianqi Yang, Yupeng Yuan, Richard Chahine, Jinsheng Xiao   +5 more
doaj   +1 more source

Performance Analysis and Optimization of a High-Temperature PEMFC Vehicle Based on Particle Swarm Optimization Algorithm

Membranes, 2021
In this paper, a high-temperature proton exchange membrane fuel cell (HT-PEMFC) model using the polybenzimidazole membrane doped with phosphoric acid molecules is developed based on finite time thermodynamics, considering various polarization losses and ...
Yanju Li, Zheshu Ma, Meng Zheng, Dongxu Li, Zhanghao Lu, Bing Xu   +5 more
doaj   +1 more source

VALIDATION OF SEMI-EMPIRICAL TEMPERATURE MODEL OF PEMFC USING ATOM SEARCH OPTIMIZATION ALGORITHM

Известия Томского политехнического университета: Инжиниринг георесурсов, 2022
Proton Exchange Membrane Fuel Cell (PEMFC) has unique thermal characteristics. The change in PEMFC temperature directly effects the PEMFC performance. The voltage and temperature of PEMFC at different loading/ambient conditions is not easy to predict. In
Amine Abbou, Abdennebi El Hassnaouib
doaj   +1 more source

Diagnosing Improper Membrane Water Content in Proton Exchange Membrane Fuel Cell Using Two-Dimensional Convolutional Neural Network

Energies, 2022
In existing proton exchange membrane fuel cell (PEMFC) applications, improper membrane water management will cause PEMFC performance decay, which restricts the reliability and durability of PEMFC systems.
Heng Zhang, Zhongyong Liu, Weilai Liu, Lei Mao   +3 more
doaj   +1 more source

Unrevealing the Impact of Annealing Condition on Catalytic Activity of PtNi Alloy Electrode Towards Oxygen Reduction Reaction

Indonesian Journal of Chemistry
Alloying platinum (Pt) with transition metals such as nickel (Ni) has been an effective approach for reducing Pt loading and enhancing catalytic activities towards the sluggish oxygen reduction reaction (ORR) on the cathode of proton exchange membrane ...
Anindya Pramudya Wardhani, Salwaa Tanaya, Retna Deca Pravitasari, Damisih Damisih, Dewi Kusuma Arti, Sri Rahayu, Muhammad Didik Gumelar, Elok Fidiani   +7 more
doaj   +1 more source

Molecular Engineering of a Mixed‐Spacer System Toward High‐Performance Polycarbazole Anion‐Exchange Membranes

Angewandte Chemie, EarlyView.
Mixed‐spacer polycarbazole membranes balance conductivity, swelling, and stability by tuning hydration and ionic connectivity. The optimized membrane reaches 184 mS cm−1 hydroxide conductivity and 2.51 W cm−2 peak power density, offering a promising strategy for high‐performance ether‐free AEMs.
Hao Liu, Yingdan Cui, Chanikya D. Jayawardana, Mohammed Al Murisi, Hai Zhao, Md Waliullah Hossain, Zhitao Hu, Cem Arkun, Iftikhar Ahmad, Qi Wang, Sophya Garashchuk, William Mustain, Chuanbing Tang   +12 more
wiley   +2 more sources