Results 61 to 70 of about 27,011 (268)

Solid-polymer-electrolyte fuel cells [PDF]

, 1992
A transport model for polymer electrolytes is presented, based on concentrated solution theory and irreversible thermodynamics. Thermodynamic driving forces are developed, transport properties are identified and experiments devised. Transport number of water in Nafion 117 membrane is determined using a concentration cell.
openaire   +1 more source

Pore Size Effects of Mesoporous N‐Doped Carbon Nanospheres as Advanced Support Material on the Activity of Molybdenum Sulfide Catalysts for the Hydrogen Evolution Reaction

Advanced Functional Materials, EarlyView.
By tuning the pore size of mesoporous N‐doped carbon (MPNC) nanospheres as support material for molybdenum sulfide, the electrochemical activity of the composite material for the hydrogen evolution reaction can be optimized. An ideal MPNC pore size of 60 nm allows a high number of molybdenum sulfide active sites while maintaining efficient proton and ...
Niklas Ortlieb, Christian Völker, Lars Guggolz, Anna Fischer   +3 more
wiley   +1 more source

An anisotropic strategy for developing polymer electrolytes endowing lithium metal batteries with electrochemo-mechanically stable interface

Nature Communications
Developing versatile solid polymer electrolytes is a reasonable approach to achieving reliable lithium metal batteries but is still challenging due to the nonuniform lithium deposition associated with the sluggish Li+ kinetics and insufficient mechanical
Jingren Gou, Kaixuan Cui, Suqing Wang, Zheng Zhang, Jiale Huang, Haihui Wang   +5 more
doaj   +1 more source

DNA: Novel Crystallization Regulator for Solid Polymer Electrolytes in High-Performance Lithium-Ion Batteries

Nanomaterials
In this work, we designed a novel polyvinylidene fluoride (PVDF)@DNA solid polymer electrolyte, wherein DNA, as a plasticizer-like additive, reduced the crystallinity of the solid polymer electrolyte and improved its ionic conductivity. At the same time,
Xiong Cheng, Joonho Bae
doaj   +1 more source

Electrochemically Driven Dissipative Growth of Affinity Hydrogels for Bioresponsive Interfaces

Advanced Functional Materials, EarlyView.
Voltage pulses drive the growth and reinforcement of hydrogel films under dissipative conditions. This biocompatible strategy enables efficient integration of affinity ligands into the hydrogel matrix, enhancing the selective capture of growth factors and allowing precise temporal control over their release, making them well‐suited as adaptive ...
Roberto Baretta, Marco Frasconi
wiley   +1 more source

Preparation of new composite electrolytes for solid-state lithium rechargeable batteries by compounding LiTFSI, PVDF-HFP and LLZTO

International Journal of Electrochemical Science, 2020
The addition of Li7La3Zr1.4Ta0.6O12 (LLZTO) particles to polymer electrolytes can reduce the crystallinity of polymer materials, promote the migration of lithium ions, and then improve the ionic conductivity of polymer solid electrolytes.
Yuanchun Gu, Faqian Liu, Guangye Liu
doaj   +1 more source

Operando Temperature Sensing at the Actual Electrocatalytic Interface by Nanodiamond Quantum Sensors

Advanced Functional Materials, EarlyView.
By integrating a wide‐field microscope with a custom‐designed electrolyzer, nanoscale temperature changes can be recorded in situ during the electrolysis process without interfering with ongoing electrochemical reactions. This method establishes a correlation between the interface temperature and specific electrochemical reactions, making the measured ...
Zan Li, Hui Wang, Mingzhong Ai, Yao Gao, Xinyi Feng, Junchen Ye, Ying Wang, Quan Li   +7 more
wiley   +1 more source

Solid polymer electrolytes based on ethylene oxide polymers

Polimery, 2014
Solid salt solutions in poly(ethylene oxide) have been intensively studied in view of their practical application in lithium batteries and other electrochemical devices. Many attempts of modifying the polymer matrix chemical structure and morphology have been undertaken to improve the conducting properties of these systems and increase the ion ...
Zbigniew Florjanczyk, Ewa Zygadlo-Monikowska, Justyna Ostrowska, Anita Frydrych   +3 more
openaire   +1 more source

Rational Device Design and Doping‐Controlled Performance in Fast‐Response π‐Ion Gel Transistors

Advanced Functional Materials, EarlyView.
π‐Ion gel transistors (PIGTs) achieve extraordinary transconductance and stability through device configuration optimization, high‐mobility conjugated polymer selection, and hole scavenger doping. The optimized PIGTs maintain performance on flexible substrates, enabling printed, fast‐response, and wearable electronics.
Masato Kato, Soh Kushida, Nafees Umar Draz, Dan Kyotani, Emanuel Smarsly, Kyota Yoshinaga, Wenhao He, Uwe H. F. Bunz, Kazuhiro Marumoto, Tatsuya Mori, Yohei Yamamoto   +10 more
wiley   +1 more source

Polymer Electrolytes for Lithium/Sulfur Batteries

Membranes, 2012
This review evaluates the characteristics and advantages of employing polymer electrolytes in lithium/sulfur (Li/S) batteries. The main highlights of this study constitute detailed information on the advanced developments for solid polymer electrolytes ...
The Nam Long Doan, Denise Gosselink, Yongguang Zhang, Mikhail Sadhu, Ho-Jae Cheang, Pu Chen, Yan Zhao   +6 more
doaj   +1 more source