Results 51 to 60 of about 5,611,362 (247)

Sustainable Materials Design With Multi‐Modal Artificial Intelligence

Advanced Science, EarlyView.
Critical mineral scarcity, high embodied carbon, and persistent pollution from materials processing intensify the need for sustainable materials design. This review frames the problem as multi‐objective optimization under heterogeneous, high‐dimensional evidence and highlights multi‐modal AI as an enabling pathway.
Tianyi Xu, Tianshuo Wei, Yan Ge, Bo Peng, Yue Li, Maolin Wang, Peng Wen, Chao Yang, Ye Wei   +8 more
wiley   +1 more source

Experimental study and comparison of various designs of gas flow fields to PEM fuel cells and cell stack performance

Frontiers in Energy Research, 2014
In this study, a significant number of experimental tests to PEM fuel cells were conducted to investigate the effect of gas flow fields on fuel cell performance.
Hong eLiu, Peiwen eLi, Daniel eJuarez-Robles, Kai eWang, Abel eHernandez-Guerrero   +4 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

Study on Performance Improvement of Low Temperature Proton Exchange Membrane Fuel Cell System by Stack Modification Using Simulation Tool

International Journal of Automotive Science and Technology
The low-temperature proton exchange membrane fuel cell (LT-PEMFC) is the leading contender and has been developed intensively over the past decades.
Karthikeyan Subramanian, Gopi Sankar M, Rajavel Ranagsamy   +2 more
doaj   +1 more source

Operando Visualization of Cathode Water Management in Proton Exchange Membrane Water Electrolyzers Using Synchrotron X‐Ray Radiography

Advanced Science, EarlyView.
The cathode of proton exchange membrane water electrolyzers remains a poorly understood region despite its importance for hydrogen purity and operational safety. Operando synchrotron X‐ray radiography directly visualizes liquid water behavior and uncovers a transition from continuous to pulsating transport, providing new insight into multiphase ...
Wataru Yoshimune, Tetsuichiro Hayakawa, Yuta Miyase   +2 more
wiley   +1 more source

Optimal Parameter Extraction of PEM Fuel Cell Using a Hybrid Weighted Mean of Vectors and Nelder-Mead Simplex Method

IEEE Access
Accurate modeling is an important aspect for a reliable design, control and optimization of proton exchange membrane (PEM) fuel cell. The mathematical model of PEM fuel cell involves a set of non-linear equations and is considered as multi-variate, multi-
Rahul Khajuria, Mahipal Bukya, Ravita Lamba, Rajesh Kumar   +3 more
doaj   +1 more source

Correlated Polymer‐Proton Hopping Enables Water‐Independent Fast Proton Transport in Poly(Ionic Liquid) Membranes

Advanced Science, EarlyView.
A polymer chain in motion: backbone, ring, and counterion dynamics interlock across timescales to relay protons through poly(ionic liquid) membranes. ABSTRACT Polymer electrolyte membranes composed of ionic liquids (IL), capable of conducting protons efficiently at elevated temperatures, without external humidification, could transform fuel cell ...
Keenan Smith, Antonela Gallastegui, Zixuan Yu, Yuliana Pairetti, Andrew Seel, Jacques Ollivier, Victoria Garcia Sakai, Bob C. Schroeder, Maria Forsyth, Aurelie Gueguen, David Mecerreyes, Fabrizia Foglia   +11 more
wiley   +1 more source

Static Drainage H2/O2 PEM Fuel Cells Enabled by Water Transport Plates: Pore‐Scale Design and Transport Mechanisms

Advanced Science, EarlyView.
The WTP is a key component of static drainage PEMFCs, enabling cathode water removal and gas sealing through capillary forces. This work investigates the mechanisms governing WTP drainage and sealing performance and develops predictive approaches for WTP design optimization.
Mengdi Guo, Diankai Qiu, Dong Zhu, Linfa Peng   +3 more
wiley   +1 more source

The Relative Humidity Effect Of The Reactants Flows Into The Cell To Increase PEM Fuel Cell Performance

MATEC Web of Conferences, 2018
Design of the Proton Exchange Membrane (PEM) fuel cell system is still developed and improved to achieve performance and efficiency optimal. Improvement of PEM fuel cell performance can be achieved by knowing the effect of system parameters based on ...
Mulyazmi, Daud W.R W, Octavia Silvi, Ulfah Maria   +3 more
doaj   +1 more source

High‐Current‐Density Acidic CO2 Electroreduction to Formic Acid Enabled by Multiscale Microenvironment Regulation Over Defect‐Rich Sn/SnOx

Advanced Science, EarlyView.
Acidic CO2 electroreduction to formic acid is enabled by integrating mixed Sn/SnOx nanoclusters, K+‐regulated interfacial solvation, and Janus wettability. Coordinated control of active sites, interfacial water, and gas‐liquid transport suppresses hydrogen evolution and delivers approximately 85% HCOOH Faradaic efficiency at 400 mA cm−2.
Qiaoqi Guo, Bowen Jiang, Le Huang, Kunyu Jiang, Rongrong Tang, Qinong Zhu, Huajun Feng, Mengyang Fan, Yijing Xia   +8 more
wiley   +1 more source