One-Step Synthesis of Graphene/Polyaniline Nanotube Composite for Supercapacitor Electrode

2015 ◽  
Vol 34 (1) ◽  
pp. 107-113 ◽  
Author(s):  
Xin Fan ◽  
Zhewei Yang ◽  
Zheng Liu
Keyword(s):  
Supercapacitor Electrode ◽  
One Step

scholarly journals Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1676 ◽  
Author(s):  
Pianpian Ma ◽  
Na Lei ◽  
Bo Yu ◽  
Yongkun Liu ◽  
Guohua Jiang ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Cloth ◽  
Supercapacitor Electrode ◽  
Cooperative Effects ◽  
Flexible Supercapacitor ◽  
Symmetric Supercapacitor ◽  
One Step ◽  
New Type

La-based perovskite-type oxide is a new type of supercapacitor electrode material with great potential. In the present study, LaMnO3/MnO (LMO/MnO) nano-arrays supported by carbon cloth are prepared via a simple one-step electrodeposition as flexible supercapacitor electrodes. The structure, deposit morphology of LMO/MnO, and the corresponding electrochemical properties have been investigated in detail. Carbon cloth-supported LMO/MnO electrode exhibits a specific capacitance of 260 F·g−1 at a current density of 0.5 A·g−1 in 0.5 M Na2SO4 aqueous electrolyte solution. The cooperative effects of LMO and MnO, as well as the uniform nano-array morphology contribute to the good electrochemical performance. In addition, a symmetric supercapacitor with a wide voltage window of 2 V is fabricated, showing a high energy density of 28.15 Wh·kg−1 at a power density of 745 W·kg−1. The specific capacitance drops to 65% retention after the first 500 cycles due to the element leaching effect and partial flaking of LMO/MnO, yet remains stable until 5000 cycles. It is the first time that La-based perovskite has been exploited for flexible supercapacitor applications, and further optimization is expected.

Facile one-step synthesis of Co(OH)2 microsphere/graphene composites for an efficient supercapacitor electrode material

RSC Advances ◽  
2015 ◽  
Vol 5 (48) ◽  
pp. 38324-38329 ◽  
Author(s):  
Guixiang Du ◽  
PanPan Liu ◽  
Xinhui Yang ◽  
Jingbo Zhang ◽  
Xiaoxu Wang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Hydrothermal Method ◽  
Electrode Material ◽  
Supercapacitor Electrode ◽  
Excellent Electrochemical Performance ◽  
One Step

A simple one-step hydrothermal method is developed for the synthesis of flower-like Co(OH)2 microspheres/graphene composites, which exhibit an excellent electrochemical performance.

scholarly journals One-step cathodic electrodeposition of a cobalt hydroxide–graphene nanocomposite and its use as a high performance supercapacitor electrode material

RSC Advances ◽  
2018 ◽  
Vol 8 (47) ◽  
pp. 26818-26827 ◽  
Author(s):  
Seyed Abbas Rahimi ◽  
Parviz Norouzi ◽  
Mohammad Reza Ganjali
Keyword(s):  
High Performance ◽  
Electrode System ◽  
Constant Current ◽  
Cobalt Hydroxide ◽  
Supercapacitor Electrode ◽  
Constant Current Density ◽  
Cathodic Electrodeposition ◽  
Reduced Graphene ◽  
One Step ◽  
Graphene Nanocomposite

In this study, Co(OH)2-reduced graphene oxide has been synthesized using a simple and rapid one-step cathodic electrodeposition method in a two electrode system at a constant current density on a stainless steel plate, and then characterized as a supercapacitive material on Ni foam.

scholarly journals Preparation of cellulose acetate derived carbon nanofibers by ZnCl2 activation as a supercapacitor electrode

RSC Advances ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 6419-6428 ◽  
Author(s):  
Qingchao Fan ◽  
Chang Ma ◽  
Liqiang Wu ◽  
Chengbiao Wei ◽  
Huihui Wang ◽  
...  
Keyword(s):  
Cellulose Acetate ◽  
Carbon Nanofibers ◽  
Porous Carbon ◽  
Supercapacitor Electrode ◽  
One Step ◽  
Zncl2 Activation

Porous carbon nanofibers are fabricated by one-step carbonization and activation of electrospun cellulose acetate (CA) nanofibres.

Construction of leaf-like CuO–Cu2O nanocomposites on copper foam for high-performance supercapacitors

2017 ◽  
Vol 46 (10) ◽  
pp. 3318-3324 ◽  
Author(s):  
Dong He ◽  
Guanda Wang ◽  
Guolong Liu ◽  
Hui Suo ◽  
Chun Zhao
Keyword(s):  
High Performance ◽  
Supercapacitor Electrode ◽  
Copper Foam ◽  
One Step ◽  
Binder Free ◽  
Anodization Method

Leaf-like CuO–Cu2O nanosheets have been prepared on copper foam by a one-step simple anodization method, which can be used as an advanced binder-free supercapacitor electrode.

A Ni1−xZnxS/Ni foam composite electrode with multi-layers: one-step synthesis and high supercapacitor performance

2016 ◽  
Vol 4 (33) ◽  
pp. 12929-12939 ◽  
Author(s):  
Xiaobing Wang ◽  
Jin Hao ◽  
Yichang Su ◽  
Fanggang Liu ◽  
Jian An ◽  
...  
Keyword(s):  
Composite Electrode ◽  
Hydrothermal Reaction ◽  
Ni Foam ◽  
Supercapacitor Electrode ◽  
Foam Composite ◽  
One Step ◽  
Supercapacitor Performance

Multi-layer NixZn1−xS/Ni foam composites were synthesized by a one-step hydrothermal reaction generating in situ growth on the Ni foam. The doping of Zn into the NixZn1−xS/Ni composite constructs the multi-layer nanostructure. The as-fabricated Ni1−xZnxS/Ni foam-2 h supercapacitor electrode shows outstanding rate properties.

Scalable one-step synthesis of N,S co-doped graphene-enhanced hierarchical porous carbon foam for high-performance solid-state supercapacitors

2019 ◽  
Vol 7 (13) ◽  
pp. 7591-7603 ◽  
Author(s):  
Liya Ma ◽  
Jin Liu ◽  
Song Lv ◽  
Qin Zhou ◽  
Xinyu Shen ◽  
...  
Keyword(s):  
Solid State ◽  
High Performance ◽  
Carbon Foam ◽  
Electrochemical Performances ◽  
Step Method ◽  
Supercapacitor Electrode ◽  
Hierarchical Porous ◽  
Doped Graphene ◽  
One Step ◽  
Co Doped

N,S co-doped graphene-enhanced HPC is prepared by a facile one-step method, and exhibits superior electrochemical performances as a solid-state supercapacitor electrode.

MnO2/rGO Nanocomposites as a Supercapacitor Electrode Material

2021 ◽  
Vol 21 (5) ◽  
pp. 3148-3155
Author(s):  
Sadhna Rai ◽  
Rabina Bhujel ◽  
Meghna Khadka ◽  
Rudra lal Chetry ◽  
Bibhu Prasad Swain ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Interlayer Spacing ◽  
Spectroscopic Studies ◽  
Supercapacitor Electrode ◽  
Retention Capacity ◽  
X Ray ◽  
Raman Spectroscopic ◽  
Reduced Graphene ◽  
One Step

MnO2 nanoparticles were incorporated in reduced graphene oxide (rGO) sheets employing an in-situ, one-step and eco-friendly method. The X-ray diffraction result shows that MnO2 nanoparticles encapsulation increases the interlayer spacing of rGO. The UV-Vis, FTIR, X-ray photoelectron and Raman spectroscopic studies show that MnO2 nanoparticles are well intercalated within reduced graphene oxide sheets. The electrochemical studies were executed in 0.5 M aqueous sulphuric acid. The maximum ‘specific capacitance’ value for MnO2/reduced graphene oxide nanocomposite was 152.5 F/g at 0.05 V/s. The MnO2/reduced graphene oxide (MnO2/rGO) nanocomposite sample displayed an excellent charge retention capacity of 92% after 1000 cycles.

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