High-voltage aqueous symmetric supercapacitor based on 3D bicontinuous, highly-wrinkled, N-doped porous graphene-like ultrathin carbon sheets

2022 ◽  
Author(s):  
Boran Tao ◽  
Na Zhang ◽  
Tian Ye ◽  
Pengfei Gao ◽  
Hongda Li ◽  
...  
Keyword(s):  
High Voltage ◽  
Mantis Shrimp ◽  
Nitrogen Doped ◽  
Porous Graphene ◽  
Shrimp Shell ◽  
Symmetric Supercapacitor ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Carbon Sheet

In this study, a facile pyrolysis is utilized to convert mantis shrimp shell into 3D bicontinuous porous, highly wrinkled, nitrogen doped, graphene-like ultrathin carbon sheet (3D BWGC). 3D BWGC achieves...

Octahedral high voltage LiNi0.5Mn1.5O4 spinel cathode: enhanced capacity retention of hybrid aqueous capacitors with nitrogen doped graphene

2015 ◽  
Vol 3 (23) ◽  
pp. 12386-12395 ◽  
Author(s):  
R. Aswathy ◽  
T. Kesavan ◽  
K. T. Kumaran ◽  
P. Ragupathy
Keyword(s):  
High Voltage ◽  
Capacity Retention ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Good Contact ◽  
Spinel Cathode

A new hybrid aqueous supercapacitor (HSC) has been constructed using electrospun octahedral LiNi0.5Mn1.5O4 as the cathode and nitrogen doped graphene as the anode. HSC exhibits remarkable capacity retention upon cycling due to the presence of (111) planes on the surface of facets offering good contact between the electrodes and electrolyte.

A high voltage cathode of Na2+2xFe2−x(SO4)3 intensively protected by nitrogen-doped graphene with improved electrochemical performance of sodium storage

2018 ◽  
Vol 6 (10) ◽  
pp. 4354-4364 ◽  
Author(s):  
Wei Wang ◽  
Xiaohao Liu ◽  
Qunjie Xu ◽  
Haimei Liu ◽  
Yong-Gang Wang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
High Voltage ◽  
Nitrogen Doped ◽  
Storage Performance ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Sodium Storage

A high voltage alluaudite sulfate Na2+2xFe2−x(SO4)3 composited with nitrogen-doped graphene and the sodium storage performance is remarkably improved.

scholarly journals Porous graphene nanocages with wrinkled surfaces enhancing electrocatalytic activity of lithium/sulfuryl chloride batteries

RSC Advances ◽  
2021 ◽  
Vol 11 (16) ◽  
pp. 9469-9475
Author(s):  
Xiangyang Li ◽  
Hirbod Maleki Kheimeh Sari ◽  
Lanjie Niu ◽  
Gege He ◽  
Yao Zhou ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Graphene Layer ◽  
High Surface ◽  
Sulfuryl Chloride ◽  
Interface Properties ◽  
Nitrogen Doped ◽  
Porous Graphene ◽  
N Doping ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

Nitrogen-doped graphene nanocages with high surface roughness highly overcome the defect of lithium/sulfuryl chloride batteries, which is attributed to the superior interface properties from the porous graphene layer and N-doping effect.

scholarly journals Nitrogen doped graphene with diamond-like bonds achieves unprecedented energy density at high power in a symmetric sustainable supercapacitor

2022 ◽  
Author(s):  
Veronika Šedajová ◽  
Aristides Bakandritsos ◽  
Piotr Błoński ◽  
Miroslav Medveď ◽  
Rostislav Langer ◽  
...  
Keyword(s):  
Energy Density ◽  
High Power ◽  
Radical Chemistry ◽  
Nitrogen Doped ◽  
Symmetric Supercapacitor ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

A nitrogen-superdoped graphene with diamond-like interlayer bonds is obtained via the radical chemistry of fluorographene, affording a symmetric supercapacitor with an energy density of 200 W h L−1 at a power of 2.6 kW L−1 and 143 W h L−1 at 52 kW L−1.

scholarly journals Nitrogen-Doped Graphene Iron-Based Particle Electrode Outperforms Activated Carbon in Three-Dimensional Electrochemical Water Treatment Systems

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3121
Author(s):  
Hosna Ghanbarlou ◽  
Nikoline Loklindt Pedersen ◽  
Morten Enggrob Simonsen ◽  
Jens Muff
Keyword(s):  
Activated Carbon ◽  
Three Dimensional ◽  
Cell Voltage ◽  
Reduction Reaction ◽  
Process Data ◽  
Nitrogen Doped ◽  
Pesticide Removal ◽  
Optimal Value ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

The synergy between electrochemical oxidation and adsorption on particle electrodes was investigated in three-dimensional (3D) systems for p-nitrosodimethylaniline (RNO) decolorization and pesticide removal. A comparison was made between granular activated carbon (GAC) and a novel synthesized nitrogen-doped graphene-based particle electrode (NCPE). Experiments on RNO decolorization show that the synergy parameter of the 3D-NCPE system was improved 3000 times compared to the studied 3D-GAC system. This was due to the specific nanostructure and composition of the NCPE material. Nitrogen-doped graphene triggered an oxygen reduction reaction, producing hydrogen peroxide that simultaneously catalyzed on iron sites of the NCPEs to hydroxyl radicals following the electro-Fenton (EF) process. Data showed that in the experimental setup used for the study, the applied cell voltage required for the optimal value of the synergy parameter could be lowered to 5V in the 3D-NCPEs process, which is significantly better than the 15–20 V needed for synergy to be found in the 3D-GAC process. Compared to previous studies with 3D-GAC, the removal of pesticides 2,6 dichlorobenzamide (BAM), 2-methyl-4-chlorophenoxyaceticacid (MCPA), and methylchlorophenoxypropionic acid (MCPP) was also enhanced in the 3D-NCPE system.

scholarly journals CoMn phosphide encapsulated in nitrogen-doped graphene for electrocatalytic hydrogen evolution over a broad pH range

2021 ◽  
Author(s):  
Jingjing Liu ◽  
Wenyao Li ◽  
Zhe Cui ◽  
Jiaojiao Li ◽  
Fang Yang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Core Shell ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Ph Range ◽  
Excellent Stability

A core–shell CoMn-P@NG heterostructure electrode demonstrated impressive performance of hydrogen evolution over a broad pH range and maintained excellent stability.

Sign in / Sign up

Export Citation Format

Share Document