Covalently functionalized heterostructured carbon by redox-active p-phenylenediamine molecules for high-performance symmetric supercapacitors

2019 ◽  
Vol 43 (4) ◽  
pp. 1688-1698 ◽  
Author(s):  
Yuanyuan He ◽  
Xia Yang ◽  
Ning An ◽  
Xiaotong Wang ◽  
Yuying Yang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
High Performance ◽  
Active Material ◽  
Single Step ◽  
Redox Active ◽  
Electrochemically Active

p-Phenylenediamine (PPD) as a novel organic electrochemically active material for supercapacitors has been covalently grafted onto dissected carbon nanotubes (DCNTs) via a facile single-step reflux method.

scholarly journals “Wiring” redox-active polyoxometalates to carbon nanotubes using a sonication-driven periodic functionalization strategy

2016 ◽  
Vol 9 (3) ◽  
pp. 1095-1101 ◽  
Author(s):  
Jun Hu ◽  
Yuanchun Ji ◽  
Wei Chen ◽  
Carsten Streb ◽  
Yu-Fei Song
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
Lithium Ion ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Redox Active ◽  
One Step ◽  
Walled Carbon Nanotubes

A universal one-step strategy for the periodic deposition of redox-active polyoxometalate nanocrystals on single-walled carbon nanotubes is reported, giving access to high-performance electrodes for lithium-ion batteries.

Carbon nanospheres hanging on carbon nanotubes: a hierarchical three-dimensional carbon nanostructure for high-performance supercapacitors

2017 ◽  
Vol 5 (32) ◽  
pp. 16595-16599 ◽  
Author(s):  
Yongsheng Zhou ◽  
Pan Jin ◽  
Yatong Zhou ◽  
Yingchun Zhu
Keyword(s):  
Carbon Nanotubes ◽  
Vapor Deposition ◽  
High Performance ◽  
Three Dimensional ◽  
Chemical Vapor ◽  
Single Step ◽  
Chemical Vapor Deposition Method ◽  
Carbon Nanostructure ◽  
Carbon Nanospheres ◽  
Simple Chemical

We describe the single-step synthesis of carbon nanospheres hanging on carbon nanotubes (CNs/CNTs), using a simple chemical vapor deposition method.

Nitrogen-doped hollow carbon spheres functionalized by 9,10-phenanthrenequinone molecules as a high-performance electrode for asymmetric supercapacitors

2019 ◽  
Vol 43 (16) ◽  
pp. 6380-6387 ◽  
Author(s):  
Wenbin Wang ◽  
Yuying Yang ◽  
Xiaotong Wang ◽  
Yi Zhou ◽  
Xinyuan Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Active Material ◽  
Carbon Spheres ◽  
Asymmetric Supercapacitors ◽  
Nitrogen Doped ◽  
Electrochemically Active ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

9,10-Phenanthrenequinone as a novel organic electrochemically active material for supercapacitors has been non-covalently functionalized onto N-doped hollow carbon spheres.

Faradic redox active material of Cu7S4 nanowires with a high conductance for flexible solid state supercapacitors

Nanoscale ◽  
2015 ◽  
Vol 7 (32) ◽  
pp. 13610-13618 ◽  
Author(s):  
Muhammad Sufyan Javed ◽  
Shuge Dai ◽  
Mingjun Wang ◽  
Yi Xi ◽  
Qiang Lang ◽  
...  
Keyword(s):  
Solid State ◽  
Carbon Fiber ◽  
High Performance ◽  
Active Material ◽  
Carbon Fiber Fabric ◽  
Redox Active ◽  
Binder Free ◽  
Fiber Fabric ◽  
High Conductance

The high Faradic redox active material of Cu7S4-NWs coated on a carbon fiber fabric is directly used as a binder-free electrode for a high performance flexible solid state supercapacitor.

scholarly journals Carbon supported olivine type phosphate framework: a promising electrocatalyst for sensitive detection of dopamine

RSC Advances ◽  
2018 ◽  
Vol 8 (49) ◽  
pp. 27775-27785 ◽  
Author(s):  
Raja Nehru ◽  
Shen-Ming Chen
Keyword(s):  
Carbon Nanotubes ◽  
Human Serum ◽  
Rat Brain ◽  
Real Time ◽  
Active Material ◽  
Multiwall Carbon Nanotubes ◽  
The Real ◽  
Electrochemically Active ◽  
Multiwall Carbon ◽  
Functionalized Multiwall Carbon Nanotubes

In this study, layered olivine-type LiMnPO4/functionalized-multiwall carbon nanotubes composite is used as an electrochemically active material for the real-time detection of dopamine and extended for the detection of human serum (E48) and rat brain-serum (C7) samples.

Theoretical Exploration of 2,2’-Bipyridines as Electro-Active Compounds in Flow Batteries

2019 ◽  
Author(s):  
Mariano Sánchez-Castellanos ◽  
Martha M. Flores-Leonar ◽  
Zaahel Mata-Pinzón ◽  
Humberto G. Laguna ◽  
Karl García-Ruiz ◽  
...  
Keyword(s):  
Redox Potential ◽  
Active Material ◽  
Chemical Properties ◽  
Small Subset ◽  
Solubility In Water ◽  
Protonation Reaction ◽  
Redox Active ◽  
Physico Chemical ◽  
Pka Value ◽  
Flow Batteries

Compounds from the 2,2’-bipyridine molecular family were investigated for use as redox-active materials in organic flow batteries. For 156 2,2’-bipyridine derivatives reported in the academic literature, we calculated the redox potential, the pKa for the first protonation reaction, and the solubility in aqueous solutions. Using experimental data on a small subset of derivatives, we were able to calibrate our calculations. We find that functionalization with electron-withdrawing groups leads to an increase of the redox potential and to an increase of the molecular acidity (as expressed in a reduction of the pKa value for the first protonation step). Furthermore, calculations of solubility in water indicate that some of the studied derivatives have adequate solubility for flow battery applications. Based on an analysis of the physico-chemical properties of the 156 studied compounds, we down-select five molecules with carbonyl- and nitro-based functional groups, whose parameters are especially promising for potential application as negative redox-active material inorganic flow batteries.

Theoretical Exploration of 2,2’-Bipyridines as Electro-Active Compounds in Flow Batteries

2019 ◽  
Author(s):  
Mariano Sánchez-Castellanos ◽  
Martha M. Flores-Leonar ◽  
Zaahel Mata-Pinzón ◽  
Humberto G. Laguna ◽  
Karl García-Ruiz ◽  
...  
Keyword(s):  
Redox Potential ◽  
Active Material ◽  
Chemical Properties ◽  
Small Subset ◽  
Solubility In Water ◽  
Protonation Reaction ◽  
Redox Active ◽  
Physico Chemical ◽  
Pka Value ◽  
Flow Batteries

Compounds from the 2,2’-bipyridine molecular family were investigated for use as redox-active materials in organic flow batteries. For 156 2,2’-bipyridine derivatives reported in the academic literature, we calculated the redox potential, the pKa for the first protonation reaction, and the solubility in aqueous solutions. Using experimental data on a small subset of derivatives, we were able to calibrate our calculations. We find that functionalization with electron-withdrawing groups leads to an increase of the redox potential and to an increase of the molecular acidity (as expressed in a reduction of the pKa value for the first protonation step). Furthermore, calculations of solubility in water indicate that some of the studied derivatives have adequate solubility for flow battery applications. Based on an analysis of the physico-chemical properties of the 156 studied compounds, we down-select five molecules with carbonyl- and nitro-based functional groups, whose parameters are especially promising for potential application as negative redox-active material inorganic flow batteries.

Cambiarenes: Single-Step Synthesis and Anion Binding of a Clip- Shaped Macrocycle with a Redox-Active Core

2019 ◽  
Author(s):  
Riley J. Petersen ◽  
Brett J. Rozeboom ◽  
Shalisa Oburn ◽  
Nolan Blythe ◽  
Tanner Rathje ◽  
...  
Keyword(s):  
Electron Density ◽  
Single Step ◽  
Anion Binding ◽  
Host Molecule ◽  
Selective Binding ◽  
The Core ◽  
Redox Active ◽  
Active Core ◽  
Guest Binding

<div>We report the synthesis of a novel macrocyclic host molecule that forms in a single step from commercially available starting materials. The core of the macrocycle backbone possesses two quinone rings and, thus, is redox-active. Host-guest binding involving the clip-shaped cavity indicates selective binding of pyridine <i>N</i>-oxides based of the electron density of and steric bulk of the anionic oxygen.</div>

Sign in / Sign up

Export Citation Format

Share Document