Results 111 to 120 of about 40,011 (297)

Controllable Carbon Shell Encapsulation via Rapid Joule Heating Calcination for High‐Performance Asymmetric Supercapacitor With Suppressed Self‐Discharge and Robust Cycling Stability

open access: yesAdvanced Science, EarlyView.
The H‐Fe3O4@C negative electrode and H‐NiCo2S4@C positive electrode are designed through a controllable carbon shell encapsulation strategy. The as‐constructed asymmetric supercapacitor presents robust cycling stability with 93.7% capacity retention after 25 000 cycles.
Qiang Zhou   +8 more
wiley   +1 more source

Methods of Assessing Degradation of Supercapacitors by Using Various Measurement Techniques

open access: yesApplied Sciences, 2019
This article presents the qualitative analyses of the construction of supercapacitor samples. The analyses are based on the suggested thermographic measurements as well as the technique of testing the inherent noise of the investigated element.
Stanislaw Galla   +3 more
doaj   +1 more source

Bon estiu (Juliol 2017)

open access: yes, 2017
Imatge utilitzada per fer publicitat de novetats del CRAI de la Universitat de Barcelona - Vitrina Juliol 2017.Estem acabant el mes de juliol i molts de vosaltres ja estareu gaudint d’unes merescudes vacances. Però si encara no les heu començat recordeu
Universitat de Barcelona. CRAI
core  

Solution‐Shearing of Highly Smooth Ion‐Gel Thin Films: Facilitating the Deposition of Organic Semiconductors for Ion‐Gated Organic Field Effect Transistors

open access: yesAdvanced Electronic Materials, Volume 11, Issue 6, May 2025.
A straightforward method is introduced to produce ion‐gel films with very low surface roughness by employing a solution‐shearing coating process. These ion‐gel films permit the growth of crystalline thin films of various small molecule organic semiconductor molecules directly on top of the ion‐gel layer, thereby enabling “inverted” small molecule ...
Jonathan Perez Andrade   +10 more
wiley   +1 more source

Molecular simulations of supercapacitors

open access: yes, 2023
Supercapacitors are energy storage devices with the ability to deliver and store energy at a fast rate. Therefore, they are mainly utilised in applications where a fast response time is required, e.g. regenerative braking systems of vehicles and for balancing the supply and demand of intermittent renewable energy.
openaire   +2 more sources

Scalable Wheat Bran‐Algae Composites for Edible Electronics with Spray‐Coated Food‐Grade Conductive Inks

open access: yesAdvanced Electronic Materials, EarlyView.
A fully edible wheat bran–algae substrate is fabricated through scalable mould‐compression and spray‐coating, enabling robust, food‐grade platforms for sustainable electronics. A chitosan barrier improves water resistance and ink compatibility, while activated‐carbon conductive films form uniform electrodes with Ohmic behaviour.
Jaz Johari   +7 more
wiley   +1 more source

Multiphysics Measurement Method for Supercapacitors State of Health Determination

open access: yesMicromachines
This work presents a comparative study on the ageing of supercapacitors and a method for monitoring their state of health (SoH) through mechanical deformation.
Thomas Doucet   +6 more
doaj   +1 more source

Wood‐Based Bioelectronics: Lignosulfonate‐Based Conductive Biocomposites for Paper Organic Electrochemical Transistors

open access: yesAdvanced Electronic Materials, EarlyView.
Biodegradable wood‐based bioelectronics are realized by integrating poly (2,3‐ethylenedioxythiopene:lignosulfonate (PEDOT:LigS) as a mixed ionicelectronic channel in organic electrochemical transistors fabricated on paper substrates. The biocomposite exhibits high conductivity, biocompatibility, and strong transistor performance, while devices built on
Katharina Matura   +8 more
wiley   +1 more source

Printed Flexible WO3‐Based Supercapacitors for Powering Low‐Powered Electronics in Wearable Devices and Energy Autonomous Temperature Monitoring

open access: yesAdvanced Electronic Materials, EarlyView.
This study represents one of the systematic demonstrations of a screen‐printed, flexible WO3‐based supercapacitor, exhibiting excellent charge‐storage performance for powering wearable electronics. The device shows a specific capacitance of 3.44 F g−1 and an energy density of 0.302 Wh kg−1 at 0.05 mA, which enable to operate multiple wearable ...
Jithin Kanathedath   +6 more
wiley   +1 more source

Polymer Electrolytes for Supercapacitors

open access: yesPolymers
Because of safety concerns associated with the use of liquid electrolytes and electrolyte solutions options of non-liquid materials like gels and polymers used as ion conducting electrolytes have been explored intensely. The low ionic conductivity of hard and soft solid materials was too low for practical applications in supercapacitors which require ...
Xuecheng Chen, Rudolf Holze
openaire   +2 more sources

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