Results 91 to 100 of about 3,212,715 (300)

Efficient Hydroxyl Diffusion Triggers Surface Hydronium Enrichment and Bulk Proton Participation to Boost Alkaline Hydrogen‐Evolving Reaction

Advanced Materials, EarlyView.
For the first time, we shed light on the surface‐to‐bulk diffusion, induction, and reaction behaviors of OH−, H+, and H2O species on model oxides for alkaline hydrogen‐evolving reaction (HER). We first demonstrate that bulk OH− diffusion significantly affects the generation of proton sources and the diffusion/reaction behaviors of protons, thus ...
Daqin Guan, Hengyue Xu, Xiao Sun, Leqi Zhao, Chun‐Kuo Peng, Chao Jing, Yu‐Cheng Huang, Jiayi Tang, Nai Shi, Zezhou Lin, Xiaomin Xu, Zhiwei Hu, Zongping Shao   +12 more
wiley   +1 more source

Performance optimization of a proton exchange membrane water electrolyzer

Prasad, Ajay K.Green hydrogen can contribute significantly to combating climate change by helping to decarbonize the world's energy sector. Hydrogen can be produced in a carbon-free manner using renewable energy by electrolysis which is environmentally ...
Alkhaldi, Shabeeb Ali
core   +1 more source

Research trends in proton exchange membrane fuel cells during 2008–2018: A bibliometric analysis [PDF]

, 2018
A bibliometric analysis of proton exchange membrane fuel cells (PEMFCs) content from a total of 15.020 research publications was conducted between 2008 and 2018, the papers being detailed in the online version of SCIExpanded, Thomson Reuters Web of ...
Meriño-Stand, Lourdes, Silva Ortega, Jorge Iván, Silva-Ortega, Jorge Ivan, Escobar Yonoff, Rony, Valencia Ochoa, Guillermo, Cardenas-Escorcia, Yulineth   +5 more
core   +1 more source

Initial open circuit voltage response as a practical diagnostic approach in proton exchange membrane water electrolysis

Discover Electrochemistry
Proton exchange membrane water electrolysis is a promising technology for sustainable hydrogen production yet transferable diagnostics across systems, especially in early operation remain as a key challenge for a reproducible operation.
Özge Kiziltan, Marc Armin Preihs, Andrea Raab, Jörg Feldmann, Viktor Hacker, Merit Bodner   +5 more
doaj   +1 more source

A Review of Proton Exchange Membrane Degradation Pathways, Mechanisms, and Mitigation Strategies in a Fuel Cell

Energies
Proton exchange membrane fuel cells (PEMFCs) have the potential to tackle major challenges associated with fossil fuel-sourced energy consumption. Nafion, a perfluorosulfonic acid (PFSA) membrane that has high proton conductivity and good chemical ...
Dharmjeet Madhav, Junru Wang, Rajesh Keloth, Jorben Mus, Frank Buysschaert, Veerle Vandeginste   +5 more
doaj   +1 more source

Lattice Strain and Built‐In Field Synergistically Boost Urea Oxidation via Dynamic NiOOH Mediation at Multiphase Heterointerfaces

Advanced Materials, EarlyView.
A sulfur‐doped lignin‐derived carbon‐coated Ni‐NiO‐MoO2 nanorod array was synthesized, exhibiting enhanced UOR performance ‐ due to lattice‐strain and built‐in electric field effects by multiphase heterogeneous interface in Ni‐NiO‐MoO2@SC, excellent corrosion resistance, mass‐transport ability, and long‐term stability (500 mA cm−2 at 1.53 V for 500 h ...
Jiawei Li, Liancen Li, Guangfu Qian, Zishan Cai, Yiping Cao, Yihao Xu, Ruyu Zhang, Jinli Chen, Changzhou Chen, Panagiotis Tsiakaras   +9 more
wiley   +1 more source

Influence of Silica/Sulfonated Polyether-Ether Ketone as Polymer Electrolyte Membrane for Hydrogen Fueled Proton Exchange Membrane Fuel Cells

International Journal of Science and Engineering, 2011
The operation of non-humidified condition of proton exchange membrane fuel cell (PEMFC) using composite sPEEK-silica membrane is reported. Sulfonated membrane of PEEK is known as hydrocarbon polyelectrolyte membrane for PEMFC and direct methanol fuel ...
Sri Handayani, Eniya Listiani Dewi Listiani Dewi   +1 more
doaj   +1 more source

Spatial‐Compatibility‐Assisted Molecular Intercalation in MXenes

Advanced Materials, EarlyView.
This work demonstrates a solvent–free NH4F–mediated route for simultaneous Al removal and molecular intercalation in MXenes. Intercalants are selected by comparing their crystallographic X, Y, and Z dimensions with the MXene interlayer spacing, establishing a spatial‐compatibility criterion that rationalizes guest–host matching and enables predictive ...
Minhao Sheng, Xiaoqing Bin, Xiangyang Liu, Yingji Zhao, Wenxiu Que, Yusuke Asakura, Yusuke Yamauchi   +6 more
wiley   +1 more source

Hybrid Nafion-inorganic oxides membrane doped with heteropolyacids for high temperature operation of proton exchange membrane fuel cell

, 2006
Performance of the proton exchange membrane fuel cell (PEMFC) with composite Nafion-inorganic additives such as silicon oxide (SiO2), titanium dioxide (TiO2), tungsten oxide (WO3), and SiO2/phosphotungstic acid (PWA) has been studied for the operation of
Xu, HF, 邵志刚, Shao, ZG, Hsing, IM, Li, MQ   +4 more
core   +1 more source

Self‐Assembling Copolymers Encapsulating Single Endothelial Cells Induce Endogenous ECM Deposition and Vascular Regeneration

Advanced Materials, EarlyView.
This study presents the first demonstration of stable sub‐50‐micron single‐cell GPM vesicles fabricated through the intrinsic self‐assembly of an amphiphilic copolymer. Hierarchical assembly of cell containing GPM vesicles into microspheres enable tunable, sustained cell delivery with immune protection.
Viola B. Morris, Sangho Lee, Kalp Soni, Simon He, Matthew Huang, Dandan Chen, Dae Hoon Lee, Kyung Hee Kim, Seonggeon Cho, Laura Pencea, Divit Jain, Young‐Sup Yoon   +11 more
wiley   +1 more source