Low Cost High Performance Electrodes for Supercapacitors: Graphene Oxide Nanoribbons Incorporated in Carbon Paste Electrodes

2018 ◽  
Vol 7 (6) ◽  
pp. M83-M88 ◽  
Author(s):  
Luis Gustavo Brogliato Camargo ◽  
Cassiano Rodrigues de Oliveira ◽  
Sidney Xavier dos Santos ◽  
Kaique Augusto Moreira Lourenço Cruz
Keyword(s):  
Graphene Oxide ◽  
High Performance ◽  
Low Cost ◽  
Carbon Paste ◽  
Carbon Paste Electrodes ◽  
Graphene Oxide Nanoribbons ◽  
Electrodes For Supercapacitors

Metal-organic framework derived metal oxide/reduced graphene oxide nanocomposite, a new tool for the determination of dipyridamole

2021 ◽  
Author(s):  
Naeime Salandari-Jolge ◽  
Ali A. Ensafi ◽  
Behzad Rezaei
Keyword(s):  
Myocardial Infarction ◽  
Graphene Oxide ◽  
High Performance ◽  
High Selectivity ◽  
Low Cost ◽  
Metal Organic Framework ◽  
Heart Patients ◽  
Reduced Graphene ◽  
Metal Organic

Dipyridamole is a prescribed medication used to treat cardiovascular diseases, angina pectoris, imaging tests for heart patients, and myocardial infarction. Therefore, high selectivity and sensitivity, low cost, and high-performance speed...

scholarly journals Hierarchical Porous RGO/PEDOT/PANI Hybrid for Planar/Linear Supercapacitor with Outstanding Flexibility and Stability

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Fuwei Liu ◽  
Luoyuan Xie ◽  
Li Wang ◽  
Wei Chen ◽  
Wei Wei ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Energy Density ◽  
Structural Design ◽  
High Performance ◽  
Rate Capability ◽  
Cotton Yarn ◽  
Reduced Graphene ◽  
Hierarchical Porous ◽  
Good Rate Capability ◽  
Electrodes For Supercapacitors

AbstractMany hybrid electrodes for supercapacitors (SCs) are a reckless combination without proper structural design that keeps them from fulfilling their potential. Herein, we design a reduced graphene oxide/poly(3,4-ethylenedioxythiophene)/polyaniline (RGO/PEDOT/PANI) hybrid with hierarchical and porous structure for high-performance SCs, where components fully harness their advantages, forming an interconnected and conductive framework with substantial reactive sites.Thus, this hybrid achieves a high capacitance of 535 F g−1 along with good rate capability and cyclability. The planar SC based on this hybrid deliver an energy density of 26.89 Wh kg−1 at a power density of 800 W kg−1. The linear SC developed via modifying a cotton yarn with the hybrid exhibits good flexibility and structural stability, which operates normally after arbitrary deformations. This work provides a beneficial reference for developing SCs.

scholarly journals Low Dark Current and Performance Enhanced Perovskite Photodetector by Graphene Oxide as an Interfacial Layer

Nanomaterials ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 190
Author(s):  
Ali Hassan ◽  
Muhammad Azam ◽  
Yeong Hwan Ahn ◽  
Muhammad Zubair ◽  
Yu Cao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Dark Current ◽  
High Performance ◽  
Carrier Transport ◽  
Defect Density ◽  
Low Cost ◽  
Degradation Process ◽  
Device Performance ◽  
Interface Engineering ◽  
Defect Passivation

Organic–inorganic hybrid perovskite photodetectors are gaining much interest recently for their high performance in photodetection, due to excellent light absorption, low cost, and ease of fabrication. Lower defect density and large grain size are always favorable for efficient and stable devices. Herein, we applied the interface engineering technique for hybrid trilayer (TiO2/graphene oxide/perovskite) photodetector to attain better crystallinity and defect passivation. The graphene oxide (GO) sandwich layer has been introduced in the perovskite photodetector for improved crystallization, better charge extraction, low dark current, and enhanced carrier lifetime. Moreover, the trilayer photodetector exhibits improved device performance with a high on/off ratio of 1.3 × 104, high responsivity of 3.38 AW−1, and low dark current of 1.55 × 10−11 A. The insertion of the GO layer also suppressed the perovskite degradation process and consequently improved the device stability. The current study focuses on the significance of interface engineering to boost device performance by improving interfacial defect passivation and better carrier transport.

scholarly journals Template-assisted synthesis of NiCoO2 nanocages/reduced graphene oxide composites as high-performance electrodes for supercapacitors

RSC Advances ◽  
2018 ◽  
Vol 8 (30) ◽  
pp. 16902-16909 ◽  
Author(s):  
Xiao-Hui Guan ◽  
Mu Li ◽  
Hai-Zhen Zhang ◽  
Liu Yang ◽  
Guang-Sheng Wang
Keyword(s):  
Graphene Oxide ◽  
Metal Oxides ◽  
High Performance ◽  
Reduced Graphene ◽  
Binary Metal Oxides ◽  
Cubic Structure ◽  
Oxide Composites ◽  
Template Assisted Synthesis ◽  
Electrodes For Supercapacitors ◽  
Coordinating Etching And Precipitating

Here we reported a coordinating etching and precipitating method to synthesize a complex binary metal oxides hollow cubic structure.

scholarly journals Charge-Transporting-Layer-Free, Vacuum-Free, All-Inorganic CsPbIBr2 Perovskite Solar Cells Via Dipoles-Adjusted Interface

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1324
Author(s):  
Wentao Zhang ◽  
Zeyulin Zhang ◽  
Qubo Jiang ◽  
Ziming Wei ◽  
Yuting Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
Open Circuit ◽  
Research Field ◽  
Carbon Paste ◽  
Inorganic Perovskite ◽  
Electron Transporting Layer ◽  
Hole Transporting ◽  
Halide Perovskite

The inorganic perovskite has a better stability than the hybrid halide perovskite, and at the same time it has the potential to achieve an excellent photoelectric performance as the organic-inorganic hybrid halide perovskite. Thus, the pursuit of a low-cost and high-performance inorganic perovskite solar cell (PSC) is becoming the research hot point in the research field of perovskite devices. In setting out to build vacuum-free and carbon-based all-inorganic PSCs with the traits of simple fabrication and low cost, we propose the ones with a simplified vertical structure of FTO/CsPbIBr2/carbon upon interfacial modification with PEI species. In this structure, both the electron-transporting-layer and hole-transporting-layer are abandoned, and the noble metal is also replaced by the carbon paste. At the same time, FTO is modified by PEI, which brings dipoles to decrease the work function of FTO. Through our measurements, the carrier recombination has been partially suppressed, and the performance of champion PSCs has far exceeded the control devices without PEI modification, which yields a power conversion efficiency of 4.9% with an open circuit voltage of 0.9 V and a fill factor of 50.4%. Our work contributes significantly to give an available method to explore charge-transporting-layer-free, low-cost, and high-performance PSCs.

Far-infrared reduced graphene oxide as high performance electrodes for supercapacitors

Carbon ◽  
2014 ◽  
Vol 75 ◽  
pp. 201-208 ◽  
Author(s):  
Feng Xiang ◽  
Jing Zhong ◽  
Ningyu Gu ◽  
Rahul Mukherjee ◽  
Il-Kwon Oh ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Far Infrared ◽  
Reduced Graphene ◽  
Electrodes For Supercapacitors

High performance dielectric composites by latex compounding of graphene oxide-encapsulated carbon nanosphere hybrids with XNBR

2014 ◽  
Vol 2 (29) ◽  
pp. 11144-11154 ◽  
Author(s):  
Ming Tian ◽  
Qin Ma ◽  
Xiaolin Li ◽  
Liqun Zhang ◽  
Toshio Nishi ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Graphene Oxide ◽  
Elastic Modulus ◽  
High Performance ◽  
High Dielectric Constant ◽  
Low Cost ◽  
Low Dielectric ◽  
Low Elastic Modulus ◽  
High Dielectric ◽  
Latex Compounding

A novel dielectric composite with high dielectric constant (k), low dielectric loss, low elastic modulus and large actuated strain at a low electric field was prepared by a simple, low-cost and efficient method.

Synergistic effects of a TiNb2O7–reduced graphene oxide nanocomposite electrocatalyst for high-performance all-vanadium redox flow batteries

2018 ◽  
Vol 6 (28) ◽  
pp. 13908-13917 ◽  
Author(s):  
Anteneh Wodaje Bayeh ◽  
Daniel Manaye Kabtamu ◽  
Yu-Chung Chang ◽  
Guan-Cheng Chen ◽  
Hsueh-Yu Chen ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
High Performance ◽  
Freeze Drying ◽  
Synergistic Effects ◽  
Low Cost ◽  
Redox Flow Batteries ◽  
Reduced Graphene ◽  
Flow Batteries ◽  
Vanadium Redox

In this study, a simple, low-cost, and powerful titanium niobium oxidereduced graphene oxide (TiNb2O7–rGO) nanocomposite electrocatalyst was synthesized through dispersion and blending in aqueous solution followed by freeze-drying and annealing for all-vanadium redox flow batteries (VRFBs).

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