A5064998546- Supercapacitor Materials and Fabrication
- Advancements in Battery Materials
- Conducting polymers and applications
- Graphene research and applications
- Advanced Battery Materials and Technologies
- Carbon Nanotubes in Composites
- Advanced battery technologies research
- Fuel Cells and Related Materials
- Fiber-reinforced polymer composites
- Mathematical Dynamics and Fractals
- Ionic liquids properties and applications
- Electrocatalysts for Energy Conversion
- Geometric and Algebraic Topology
- Advanced Battery Technologies Research
- Mesoporous Materials and Catalysis
- Advanced Sensor and Energy Harvesting Materials
- Electrochemical Analysis and Applications
- Boron and Carbon Nanomaterials Research
- French Urban and Social Studies
- Muon and positron interactions and applications
- Fullerene Chemistry and Applications
- Zeolite Catalysis and Synthesis
- Electrochemical sensors and biosensors
- Catalytic Processes in Materials Science
- Graphite, nuclear technology, radiation studies
Poznań University of Technology
2015-2024
Sorbonne Université
2023
Centre National de la Recherche Scientifique
2007-2023
Université Sorbonne Paris Nord
2015-2023
Laboratoire Analyse, Géométrie et Applications
2011-2023
Université Paris-Sud
2003-2016
Université d'Orléans
2003-2016
Université Paris-Saclay
2010-2016
Interfaces, Confinement, Matériaux et Nanostructures
2004-2014
Laboratoire de Mathématiques d'Orsay
2003-2012
Electrical energy storage (EES) is one of the most critical areas technological research around world. Storing and efficiently using electricity generated by intermittent sources transition our transportation fleet to electric drive depend fundamentally on development EES systems with high power densities. Supercapacitors are promising devices for highly efficient management, yet they still suffer from moderate densities compared batteries. To establish a detailed understanding science...
An oxygen-rich carbon for supercapacitors has been obtained by one-step carbonization of a natural biopolymer from seaweeds, e.g., sodium alginate. Although the specific surface area this is very low, it gives capacitance comparable to best activated carbons available. Due its low porosity (see figure), material high density and good electrical conductivity, also advantageous supercapacitor applications.
Electrochemical characteristics of supercapacitors built from multiwalled carbon nanotubes electrodes have been investigated and correlated with microtexture elemental composition the materials. Capacitance has estimated by cyclovoltammetry at different scan rates 1 to 10 mV/s, galvanostatic discharge, impedance spectroscopy in frequency range 100 kHz mHz. The presence mesopores due central canal and/or entanglement is origin an easy accessibility ions electrode/electrolyte interface for...
Abstract The sea provides a large variety of seaweeds that, because their chemical composition, are fantastic precursors nanotextured carbons. carbons obtained by the simple pyrolysis under nitrogen atmosphere between 600 and 900 °C, followed rinsing product in slightly acidic water. Depending on origin seaweed conditions, synthesis may be oriented to give an oxygen‐enriched carbon or tuned micro/mesoporous carbon. samples with rich oxygenated surface functionality excellent as...
Abstract A novel microporous templated carbon material doped with nitrogen is synthesized by using a two‐step nanocasting process acrylonitrile (AN) and propylene as precursors, Na–Y zeolite scaffold. Liquid‐phase impregnation in situ polymerization of the nitrogenated precursor inside nanochannels inorganic scaffold, followed gas‐phase propylene, enables pore‐size control functionality tuning resulting material. The thereby obtained has narrow distribution (PSD), within micropore range,...
Multiwalled carbon nanotubes (MWNTs) have unique mechanical properties and are ideal candidates for high-performance composites. Elastic measurements, performed with an atomic force microscope, described MWNTs produced by two methods: the arc-discharge method thermal decomposition of hydrocarbons in presence catalysts. Extended stacking defects, such as second production (which unlike first can yield almost continuous long fibers), shown to a much larger effect than point defects on elastic...
Tensile tests were carried out on free-standing composite films of poly(vinyl alcohol) and six different types carbon nanotubes for nanotube loading levels. Significant increases in Young's modulus by up to a factor 2 observed all cases. Theories such as the rule-of-mixtures or Halpin-Tsai-theory could not explain relative differences between composites made from tube types. However, it is possible show that reinforcement scales linearly with total surface area films, indicating low diameter...