Results 61 to 70 of about 2,265 (207)

Porphyrin/sPEEK Membranes with Improved Conductivity and Durability for PEFC Technology [PDF]

ACS Applied Energy Materials, 2018
Advanced composite membranes have been obtained by incorporation of the meso-tetrakis(4-sulfonatophenyl)porphyrin (TPPS) into a sulfonated poly(etheretherketone) (sPEEK). The presence of porphyrins in their monomeric, dimeric, and aggregated forms into the membrane ionic domains have been investigated by static and time-resolved spectroscopic ...
Maria A Castriciano, Alessandra Carbone, Andrea Romeo, Giuseppe Portale, Rolando Pedicini, Irene Gatto, Luigi Monsù Scolaro   +6 more
openaire   +8 more sources

Applications of Polymers in Zinc Anode Protection for Aqueous Zinc‐Ion Batteries

Battery Energy, Volume 5, Issue 3, May 2026.
Zinc anodes suffer from dendrite growth and side reactions, severely restricting aqueous zinc‐ion battery applications. Polymers with adjustable structures and functions are widely used to protect the zinc anode. This review outlines design principles, mechanisms, and optimization strategies for polymer‐based interfacial layers and electrolytes ...
Shuping Zhao, Jinping Wu, Peng Lin, Peng Liu, Kai Hu, Huibing He, Dongdong Li   +6 more
wiley   +1 more source

Performance of high sulfonated poly(ether ether ketone) improved with microcrystalline cellulose and 2,3-dialdehyde cellulose for proton exchange membranes

Materials for Renewable and Sustainable Energy
Sulfonated poly (ether ether ketone) (SPEEK) has received substantial attention for its potential to improve the electrochemical behavior and thermomechanical capabilities of direct methanol fuel cells. This study examines how the integration by solution
Mohamed Amine Ben Moussa, Zakarya Ahmed, Khaled Charradi, Boutheina Ben Fraj, Sami Boufi, Andreas Koschella, Thomas Heinze, Sherif M. A. S. Keshk, Ibtissem Ben Assaker   +8 more
doaj   +1 more source

Highly selective SPEEK/ENR blended polymer electrolyte membranes for direct methanol fuel cell

, 2020
Sulfonated poly (ether ether ketone) (SPEEK) at higher degrees of sulfonation (DS) produced high proton conductivity, but it is impractical for DMFC application due to excessive swelling and severe methanol crossover.
Salleh, W. N. W., Noral Azman, W. N. E. W. M., Jaafar, J., Ismail, A. F., Rahman, M. A., Othman, M. H. D., Rasdi, F. R. M.   +6 more
core   +1 more source

Membrane Engineering for Battery Systems: Bridging Design Principles and Frontier Applications

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 3, May 2026.
The review emphasizes membrane separators' role in battery performance and safety, covering redox flow, lithium‐ion, and solid‐state batteries. It reviews advances in membrane materials (e.g., polymer electrolytes, hybrid composites) and ion transport mechanisms, while addressing challenges like dendrite growth and crossover losses.
Xiaoqun Zhou, Justice Delali Akoto, Rui Tan, Jun Ma   +3 more
wiley   +1 more source

Understanding of Nanophase Separation and Hydrophilic Morphology in Nafion and SPEEK Membranes: A Combined Experimental and Theoretical Studies

Nanomaterials, 2019
The understanding of the relationship between the chemical structure and the hydrophilic structure is crucial for the designing of high-performance PEMs.
Rujie Wang, Shanshan Liu, Lidong Wang, Ming Li, Chong Gao   +4 more
doaj   +1 more source

How to Chemically Protect PFAS‐Free Membranes in Fuel Cells: Radical Quenching Poly(vinylphosphonic acid) Layer

Advanced Functional Materials, Volume 36, Issue 32, 20 April 2026.
Hydrocarbon membranes are a greener alternative to PFSA in PEM fuel cells, but degrade rapidly from radical attack. We present a novel strategy using poly(vinylphosphonic acid) (PVPA) as a local radical scavenger. Incorporated as an interfacial barrier, PVPA enhances chemical stability and significantly extends membrane lifetime under accelerated ...
Hendrik Sannemüller, Hannes Liepold, Frederik Brendel, Janka Friese, Carolin Klose, Tym de Wild, Andreas Münchinger   +6 more
wiley   +1 more source

Water Uptake And Conductivity Of Cross-Linked Speek Membranes

, 2009
Water uptake is an important attribute of all membrane electrolytes, as it is related to mechanical strength, creep, and dimensional stability. Thus some means of controlling water uptake by a hydrophilic sulfonic acid polymer is desirable.
Linkous, C. A., Mohajeri, N., Linkous, W. G., Pearman, B. P., Rhoden, S. L.   +4 more
core   +1 more source

A self-assembling graphene oxide coating for enhanced bactericidal and osteogenic properties of poly-ether-ether-ketone

Frontiers in Bioengineering and Biotechnology
Poly-ether-ether-ketone (PEEK) is a biomedical plastic that can be used for orthopedic implants, but it offers poor antibacterial properties and bioactivity.
Run Huang, Run Huang, Run Huang, Yingjian Gu, Yingjian Gu, Yeju Yuan, Yunxiao Wang, Yusong Pan, Bo Li, Geliang Ren, Lei Huang, Yinghai Xie   +11 more
doaj   +1 more source

Construction of High-Strength Flame-Retardant Li-SPEEK-Modified PEG Gel Polymer Electrolytes for Lithium Batteries

The low mechanical performance and high flammability of gel polymer electrolytes limit their application. Here, we prepare a high-strength and nonflammable polymer Li-SPEEK (lithium sulfonated polyetheretherketone) to modify PEG (polyethylene glycol) and
Jun Jin (551362), Meifen Wu (1588090), Zhaoyin Wen (1418644), Lei Shi (8144), ZhaoFeng Jiang (16001122)   +4 more
core   +1 more source