Quick in situ generation of a quinone-enriched surface of N-doped carbon cloth electrodes for electric double-layer capacitors

2021 ◽  
Vol 50 (10) ◽  
pp. 3651-3659
Author(s):  
Xiaowei Lv ◽  
Shan Ji ◽  
Jun Lu ◽  
Lei Zhang ◽  
Xuyun Wang ◽  
...  
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
Carbon Layer ◽  
Carbon Cloth ◽  
Nitrogen Doped ◽  
Electro Oxidation ◽  
In Situ Generation ◽  
Nitrogen Doped Carbon ◽  
Double Layer Capacitors

A method of electro-oxidation was developed to engineer the surface features of the carbon cloth wrapped with a nitrogen-doped carbon layer, then to obtain a highly hydrophilic, carbon cloth electrode with plenty of quinone-containing sites.

An evaporation-induced tri-consistent assembly route towards nitrogen-doped carbon microfibers with ordered mesopores for high performance supercapacitors

2015 ◽  
Vol 17 (6) ◽  
pp. 4724-4729 ◽  
Author(s):  
Ruili Liu ◽  
Lixia Pan ◽  
Li Wan ◽  
Dongqing Wu
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
Mesoporous Carbon ◽  
High Performance ◽  
Rate Capability ◽  
Nitrogen Doped ◽  
Carbon Microfibers ◽  
Nitrogen Doped Carbon ◽  
Double Layer Capacitors ◽  
Ordered Mesopores

Prepared via an evaporation-induced tri-consistent assembly approach, nitrogen-doped mesoporous carbon microfibers exhibit enhanced capacity, excellent rate capability and durability in electric double-layer capacitors.

Electrochemical Properties of Supercapacitors Using Boron Nitrogen Double-Doped Carbon Nanotubes as Conductive Additive

NANO ◽  
2019 ◽  
Vol 14 (07) ◽  
pp. 1950080
Author(s):  
Hao Hu ◽  
Xiaogang Sun ◽  
Wei Chen ◽  
Jie Wang ◽  
Xu Li ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Double Layer ◽  
Specific Surface Area ◽  
Electric Double Layer ◽  
X Ray ◽  
Nitrogen Doped ◽  
Conductive Additive ◽  
Double Layer Capacitors ◽  
Boron Nitrogen

Carbon nanotubes (CNTs) were doped by ammonium borate as the sources of nitrogen and boron. Under the protection of Ar gas, boron-nitrogen doped CNTs were prepared through nitriding and boronization at high temperature. It is a conductive additive. Then, the obtained CNTs were mixed with activated carbon (AC), SP, sodium dodecyl sulfate (SDS), and cellulose fiber to prepare electrodes. With all the materials, a symmetric electric double-layer supercapacitor (EDLC) was assembled. Next, the materials and electrodes were also characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The factors, chemical connections, and specific surface area of the CNTs were analyzed by X-ray energy spectrum analysis (EDS), X-ray photoelectron spectroscopy (XPS), as well as a specific surface area and porosimetry analyzer (BET). In addition, the electrochemical performances of electric double-layer capacitors were tested with the help of cyclic voltammetry, constant-current charging and discharging, and so on. From the results, we can make a conclusion, that is, both B and N atoms were added into the CNTs and formed bonds successfully with carbon atoms mutually. Besides, the specific surface area is about 1.5 times than that of the CNT. When the charge/discharge current density reaches 50[Formula: see text]mA/g, we can find that the mass specific capacitance of the capacitor can run up to 32.19[Formula: see text]F/g. Also, we observe that the maximum power density is close to 220[Formula: see text]W/kg (700[Formula: see text]mA/g), and the energy density can arrive 9.31[Formula: see text]Wh/kg (50[Formula: see text]mA/g). Based on the impedance test, the electrodes are characterized with low impedance. After 2000 cycles, the boron-nitrogen doped double-layer capacitors maintain a capacitance retention ratio of above 95%. Its power density can still achieve 220[Formula: see text]W/kg when the energy density keeps at 3.46[Formula: see text]Wh/kg. In other words, the electrochemical performance functions of the electric double-layer capacitors are enhanced while the CNTs serve as the electrodes.

scholarly journals High-Surface-Area Nitrogen-Doped Reduced Graphene Oxide for Electric Double-Layer Capacitors

ChemSusChem ◽  
2015 ◽  
Vol 8 (11) ◽  
pp. 1875-1884 ◽  
Author(s):  
Hee-Chang Youn ◽  
Seong-Min Bak ◽  
Myeong-Seong Kim ◽  
Cherno Jaye ◽  
Daniel A. Fischer ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Surface Area ◽  
Double Layer ◽  
Electric Double Layer ◽  
High Surface ◽  
High Surface Area ◽  
Nitrogen Doped ◽  
Reduced Graphene ◽  
Double Layer Capacitors

Inside Cover: High-Surface-Area Nitrogen-Doped Reduced Graphene Oxide for Electric Double-Layer Capacitors (ChemSusChem 11/2015)

ChemSusChem ◽  
2015 ◽  
Vol 8 (11) ◽  
pp. 1822-1822
Author(s):  
Hee-Chang Youn ◽  
Seong-Min Bak ◽  
Myeong-Seong Kim ◽  
Cherno Jaye ◽  
Daniel A. Fischer ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Surface Area ◽  
Double Layer ◽  
Electric Double Layer ◽  
High Surface ◽  
High Surface Area ◽  
Nitrogen Doped ◽  
Reduced Graphene ◽  
Double Layer Capacitors

scholarly journals Highly porous nitrogen-doped carbon for superior electric double-layer capacitors

RSC Advances ◽  
2017 ◽  
Vol 7 (71) ◽  
pp. 44735-44742 ◽  
Author(s):  
Da Sol Jeong ◽  
Je Moon Yun ◽  
Kwang-Ho Kim
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Carbon Material ◽  
Electric Double Layer ◽  
Large Specific Surface Area ◽  
Supercapacitive Performance ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Double Layer Capacitors ◽  
Highly Porous

The highly porous nitrogen-doped carbon material pyrolyzed from one of PVP/NaOH mixtures with different NaOH contents exhibited a large specific surface area of up to 2400 m2 g−1 and an excellent supercapacitive performance of maximum 478 F g−1.

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