Pen lithography for flexible microsupercapacitors with layer-by-layer assembled graphene flake/PEDOT nanocomposite electrodes

2017 ◽  
Vol 5 (26) ◽  
pp. 13581-13590 ◽  
Author(s):  
Hee Uk Lee ◽  
Seung Wook Kim
Keyword(s):  
Solid State ◽  
Electrode Material ◽  
Current Collector ◽  
Charge Storage ◽  
Layer By Layer ◽  
Graphene Flake ◽  
Energy Device ◽  
High Charge ◽  
A Current ◽  
Nanocomposite Electrodes

An energy device using an all solid-state microsupercapacitor (MSC) has to play the roles of both a current collector and an electrode material, as well as demonstrating properties of high charge storage, conductivity, and flexibility.

Nanocellulose Aerogels Functionalized by Rapid Layer-by-Layer Assembly for High Charge Storage and Beyond

2013 ◽  
Vol 125 (46) ◽  
pp. 12260-12264 ◽  
Author(s):  
Mahiar Hamedi ◽  
Erdem Karabulut ◽  
Andrew Marais ◽  
Anna Herland ◽  
Gustav Nyström ◽  
...  
Keyword(s):  
Charge Storage ◽  
Layer By Layer ◽  
High Charge ◽  
Layer By Layer Assembly ◽  
Layer Assembly

Exceptional interfacial electrochemistry of few-layered 2D MoS2 quantum sheets for high performance flexible solid-state supercapacitors

2020 ◽  
Vol 8 (26) ◽  
pp. 13121-13131 ◽  
Author(s):  
Swapnil Shital Nardekar ◽  
Karthikeyan Krishnamoorthy ◽  
Parthiban Pazhamalai ◽  
Surjit Sahoo ◽  
Vimal Kumar Mariappan ◽  
...  
Keyword(s):  
Solid State ◽  
Electrode Material ◽  
High Performance ◽  
Charge Storage ◽  
Storage Mechanism ◽  
Interfacial Electrochemistry ◽  
Hidden Knowledge ◽  
Charge Storage Mechanism

Extracting the hidden knowledge behind the exception charge storage mechanism involved in the MoS2 quantum sheets electrode material.

Nanocellulose Aerogels Functionalized by Rapid Layer-by-Layer Assembly for High Charge Storage and Beyond

2013 ◽  
Vol 52 (46) ◽  
pp. 12038-12042 ◽  
Author(s):  
Mahiar Hamedi ◽  
Erdem Karabulut ◽  
Andrew Marais ◽  
Anna Herland ◽  
Gustav Nyström ◽  
...  
Keyword(s):  
Charge Storage ◽  
Layer By Layer ◽  
High Charge ◽  
Layer By Layer Assembly ◽  
Layer Assembly

Facile preparation of a highly efficient NiZn2O4–NiO nanoflower composite grown on Ni foam as an advanced battery-type electrode material for high-performance electrochemical supercapacitors

2020 ◽  
Vol 49 (11) ◽  
pp. 3622-3629 ◽  
Author(s):  
Yedluri Anil Kumar ◽  
Kulurumotlakatla Dasha Kumar ◽  
Hee-Je Kim
Keyword(s):  
Electrode Material ◽  
High Performance ◽  
Current Collector ◽  
Electrochemical Supercapacitors ◽  
Ni Foam ◽  
Highly Efficient ◽  
Binder Free ◽  
Synthesis Procedure ◽  
Facile Preparation ◽  
A Current

Schematic illustration of the synthesis procedure of binder-free battery-type NiZn2O4–NiO NFAs grown on Ni foam: (a) current collector; (b) NiZn2O4 NLAs; and (c) NiCo2O4–NiO NFAs.

scholarly journals An efficient electrode material for high performance solid-state hybrid supercapacitors based on a Cu/CuO/porous carbon nanofiber/TiO2 hybrid composite

2019 ◽  
Vol 10 ◽  
pp. 781-793 ◽  
Author(s):  
Mamta Sham Lal ◽  
Thirugnanam Lavanya ◽  
Sundara Ramaprabhu
Keyword(s):  
Solid State ◽  
Specific Capacitance ◽  
Current Density ◽  
Electrode Material ◽  
Porous Carbon ◽  
Carbon Nanofiber ◽  
High Energy ◽  
High Energy Density ◽  
Porous Carbon Nanofiber ◽  
A Current

A Cu/CuO/porous carbon nanofiber/TiO2 (Cu/CuO/PCNF/TiO2) composite uniformly covered with TiO2 nanoparticles was synthesized by electrospinning and a simple hydrothermal technique. The synthesized composite exhibits a unique morphology and excellent supercapacitive performance, including both electric double layer and pseudo-capacitance behavior. Electrochemical measurements were performed by cyclic voltammetry, galvanostatic charge–discharge and electrochemical impedance spectroscopy. The highest specific capacitance value of 530 F g−1 at a current density of 1.5 A g−1 was obtained for the Cu/CuO/PCNF/TiO2 composite electrode in a three-electrode configuration. The solid-state hybrid supercapacitor (SSHSC) fabricated based on this composite exhibits a high specific capacitance value of 330 F g−1 at a current density of 1 A g−1 with 78.8% capacitance retention for up to 10,000 cycles. At the same time, a high energy density of 45.83 Wh kg−1 at a power density of 1.27 kW kg−1 was also realized. The developed electrode material provides new insight into ways to enhance the electrochemical properties of solid-state supercapacitors, based on the synergistic effect of porous carbon nanofibers, metal and metal oxide nanoparticles, which together open up new opportunities for energy storage and conversion applications.

Application of a carbon nanotube (CNT) sheet as a current collector for all-solid-state lithium batteries

2015 ◽  
Vol 299 ◽  
pp. 70-75 ◽  
Author(s):  
Sunho Choi ◽  
Junghoon Kim ◽  
Minyong Eom ◽  
Xianghe Meng ◽  
Dongwook Shin
Keyword(s):  
Carbon Nanotube ◽  
Solid State ◽  
Lithium Batteries ◽  
Current Collector ◽  
A Current

Fabrication and charge storage capacitance of PPY/TiO2/PPY jacket nanotube array

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Yibing Xie
Keyword(s):  
Density Of States ◽  
Electrode Material ◽  
Acidic Solution ◽  
Tube Wall ◽  
Internal Surface ◽  
Experimental Result ◽  
Charge Storage ◽  
Current Response ◽  
Supercapacitor Electrode ◽  
Nanotube Array

AbstractA PPY/TiO2/PPY jacket nanotube array was fabricated by coating PPY layer on the external and internal surface of a tube wall-separated TiO2 nanotube array. It shows coaxial triple-walled nanotube structure with two PPY nanotube layers sandwiching one TiO2 nanotube layer. PPY/TiO2/PPY reveals much higher current response than TiO2. The theoretical calculation indicates PPY/TiO2/PPY reveals higher density of states and lower band gap, accordingly presenting higher conductivity and electroactivity, which is consistent with the experimental result of a higher current response. The electroactivity is highly enhanced in H2SO4 rather than Na2SO4 electrolyte due to feasible pronation process of PPY in an acidic solution. PPY/TiO2/PPY could conduct the redox reaction in H2SO4 electrolyte which involves the reversible protonation/deprotonation and HSO4− doping/dedoping process and accordingly contributes to Faradaic pseudocapacitance. The specific capacitance is highly enhanced from 1.7 mF cm−2 of TiO2 to 123.4 mF cm−2 of PPY/TiO2/PPY at 0.1 mA cm−2 in H2SO4 electrolyte. The capacitance also declines from 123.4 to 31.7 mF cm−2 when the current density increases from 0.1 to 1 mA cm−2, presenting the rate capacitance retention of 26.7% due to the semiconductivity of TiO2. A PPY/TiO2/PPY jacket nanotube with high charge storage capacitance is regarded as a promising supercapacitor electrode material.

scholarly journals Inkjet Printing of Polypyrrole Electroconductive Layers Based on Direct Inks Freezing and Their Use in Textile Solid-State Supercapacitors

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3577
Author(s):  
Zbigniew Stempien ◽  
Mohmmad Khalid ◽  
Marcin Kozanecki ◽  
Paulina Filipczak ◽  
Angelika Wrzesińska ◽  
...  
Keyword(s):  
Solid State ◽  
Inkjet Printing ◽  
Surface Resistance ◽  
Spectroscopic Studies ◽  
Polymerization Temperature ◽  
Textile Fabrics ◽  
Symmetric Supercapacitor ◽  
Novel Method ◽  
A Current ◽  
Standard Support

In this work, we propose a novel method for the preparation of polypyrrole (PPy) layers on textile fabrics using a reactive inkjet printing technique with direct freezing of inks under varying temperature up to −16 °C. It was found that the surface resistance of PPy layers on polypropylene (PP) fabric, used as a standard support, linearly decreased from 6335 Ω/sq. to 792 Ω/sq. with the decrease of polymerization temperature from 23 °C to 0 °C. The lowest surface resistance (584 Ω/sq.) of PPy layer was obtained at −12 °C. The spectroscopic studies showed that the degree of the PPy oxidation as well as its conformation is practically independent of the polymerization temperature. Thus, observed tendences in electrical conductivity were assigned to change in PPy layer morphology, as it is significantly influenced by the reaction temperature: the lower the polymerization temperature the smoother the surface of PPy layer. The as-coated PPy layers on PP textile substrates were further assembled as the electrodes in symmetric all-solid-state supercapacitor devices to access their electrochemical performance. The electrochemical results demonstrate that the symmetric supercapacitor device made with the PPy prepared at −12 °C, showed the highest specific capacitance of 72.3 F/g at a current density of 0.6 A/g, and delivers an energy density of 6.12 Wh/kg with a corresponding power density of 139 W/kg.

Sign in / Sign up

Export Citation Format

Share Document