Results 41 to 50 of about 3,492 (211)

A survey on parameters estimation of the proton exchange membrane fuel cells based on the swarm-inspired optimization algorithms

Frontiers in Energy Research, 2023
The main purpose of this study is to review various swarm-inspired optimization algorithms to discuss the significance of some established works in this area. Accurate parameter estimation is required to guarantee proper modeling of PEMFCs.
Navid Razmjooy
doaj   +1 more source

Escaping the Scaling Relationships in Oxygen Reduction Catalysis: Implications for PEM Fuel Cells

Advanced Materials, EarlyView.
Escaping the scaling relationships of the oxygen reduction reaction is vital for hydrogen fuel cells. This outlook examines how interfacial heterogeneity, spanning the subsurface lattice, chemisorption layer, and near‐interface solvation volume, mechanistically decouples intermediate binding energetics.
Muhammad Bilal Wazir, Lourdes F. Vega, Maryam Khaleel   +2 more
wiley   +1 more source

Adsorption‐Engineered Hydrocarbon Ionomers for Durable Proton‐Exchange Membrane Fuel Cells

Advanced Materials, EarlyView.
Hydrocarbon ionomers suffer from oxidation‐driven interfacial degradation in PEM fuel cell cathodes, leading to catalyst instability. Here, adsorption‐engineered poly(fluorene) ionomers decouple interfacial anchoring from oxidative degradation, enabling strong catalyst–ionomer interactions while resisting electrochemical oxidation.
Heemin Park, Kate Chen, Su Min Ahn, Hengquan Guo, Cy Fujimoto, Jong‐Ho Choi, Lynda Amichi, Danah Kim, Seung Geol Lee, Xiaojing Wang, Jacob S. Spendelow, Sun Young Kang, Panagiotis Bexis, Eun Joo S. Park, Yu Seung Kim   +14 more
wiley   +1 more source

A Novel Tubular Shape Design for Polymer Electrolyte Membrane Fuel Cell (PEMFC) to Enhance the Performance [PDF]

Iranian Journal of Chemistry & Chemical Engineering
The Polymer Exchange Membrane Fuel Cell set is an efficient system that can transform hydrogen energy into an electrical one. Due to higher power density, the tubular shape is the preferred architecture among the different architectures over the ...
Sepehr Senfi, Ata Chitsaz, Abdolsalam Ebrahimpour, Roghayyeh Motallebzadeh   +3 more
doaj   +1 more source

Effect of Baffle Dimensionless Size Factor on the Performance of Proton Exchange Membrane Fuel Cell

Energies, 2022
In this paper, the model of a proton exchange membrane fuel cell (PEMFC) with single straight channel is established to investigate the effect of dimensionless size factor of baffles on PEMFC performance.
Yonghua Cai, Jingming Sun, Fan Wei, Ben Chen   +3 more
doaj   +1 more source

Understanding Operando Water Management in Hydroxide‐Exchange‐Membrane Fuel Cells

Advanced Materials Interfaces, EarlyView.
Effective water management is vital for high‐performance hydroxide‐exchange‐membrane fuel cells. Using a custom water‐flux station, this study quantifies how membrane thickness, microporous layers, and operating conditions dictate internal water transport.
Catherine M. Weiss, Shiyi Wang, Brian P. Setzler, Yushan Yan, Adam Z. Weber   +4 more
wiley   +1 more source

Numerical analysis on the dynamic response of a plate-and-frame membrane humidifier for PEMFC vehicles under various operating conditions

Open Physics, 2018
PEMFC needs to be maintained at an appropriate temperature and humidity in a rapidly changing environment for automobile applications. In this study, a pseudo-multi-dimensional dynamic model for predicting the heat and mass transfer performance of a ...
Yun Sungho, Cha Dowon, Song Kang Sub, Hong Seong Ho, Lee Sang Hun, Yang Wonseok, Kim Yongchan   +6 more
doaj   +1 more source

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, Hyeon Keun Cho, Chang Yeon Hyun, Shirong Li, Jong Geun Seong, So Young Lee, Nanwen Li, Young Moo Lee   +7 more
wiley   +1 more source

Hydrogen fuel cells as a key technology for increasing UAV flight duration: challenges and prospects

Физика волновых процессов и радиотехнические системы
Background. The efficiency of unmanned aerial vehicle (UAV) applications in agriculture, logistics, and infrastructure monitoring directly depends on their flight endurance.
Andrew A. Voronoy, Vyacheslav V. Gerasimov, Svetlana V. Sitnikova   +2 more
doaj   +1 more source

Overcoming the Catalytic Bucket Effect in Pt‐based High‐Entropy Nanocages Through Interface Defect and Strain Engineering

Advanced Science, EarlyView.
PtPdNiCuMnAu HENCs exhibit a remarkable half‐wave potential (E1/2) of 0.925 V vs. RHE. The catalyst displays exceptional electrochemical stability, with only a 4 mV negative shift in E1/2 and a mere 5.6% loss in MA after 10, 000 accelerated durability test cycles.
Qian Liu, Haoran Kang, Yiou Liu, Xiaowei Zhang, Xu Chen, Faming Gao   +5 more
wiley   +1 more source