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.

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.

Accurately manipulating hierarchical flower-like Fe2P@CoP@nitrogen-doped carbon spheres as an efficient carrier material of Pt-based catalyst

Nanoscale ◽  
2021 ◽  
Author(s):  
Fei Xie ◽  
Mengyu Gan ◽  
Li Ma
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Catalytic Performance ◽  
Effective Strategy ◽  
Large Specific Surface Area ◽  
Carbon Spheres ◽  
Nitrogen Doped ◽  
Porous Catalysts ◽  
Hierarchical Porous ◽  
Nitrogen Doped Carbon

Fabrication of hierarchical porous catalysts with large specific surface area and tunable architecture provides an effective strategy to promote the catalytic performance of Pt-based catalysts. Herein, we design and construct...

Coassembly and high ORR performance of monodisperse Pt nanocrystals with a mesopore-rich nitrogen-doped graphene aerogel

2017 ◽  
Vol 5 (33) ◽  
pp. 17544-17548 ◽  
Author(s):  
Beibei Xie ◽  
Yong Zhang ◽  
Renjie Zhang
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Large Specific Surface Area ◽  
Graphene Aerogel ◽  
N Content ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Pt Nanocrystals

Monodisperse Pt nanocrystals in NGA with a large specific surface area and high N content yield high ORR performance.

scholarly journals Precursor-controlled and template-free synthesis of nitrogen-doped carbon nanoparticles for supercapacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (62) ◽  
pp. 50063-50069 ◽  
Author(s):  
Li-Ping Lv ◽  
Zhong-Shuai Wu ◽  
Long Chen ◽  
Hao Lu ◽  
Yi-Ran Zheng ◽  
...  
Keyword(s):  
Specific Surface ◽  
Specific Capacitance ◽  
Surface Area ◽  
Specific Surface Area ◽  
Carbon Nanoparticles ◽  
High Specific Surface Area ◽  
Nitrogen Doped ◽  
Hierarchical Porous ◽  
Template Free ◽  
Nitrogen Doped Carbon

We describe the synthesis of hierarchical porous nitrogen-doped carbon nanoparticles with high specific surface area and specific capacitance for supercapacitors.

Fabrication and Basic Investigation of Flat Lignocellulosic Carbon Material for Self-Supporting Electrodes in Electric Double-Layer Capacitors

2013 ◽  
Vol 1497 ◽  
Author(s):  
Tsubasa Funabashi ◽  
Masamichi Sato ◽  
Masao Kitajima ◽  
Shuichi Shoji ◽  
Jun Mizuno
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Double Layer ◽  
Specific Surface Area ◽  
Photoelectron Spectroscopy ◽  
Carbon Material ◽  
Electric Double Layer ◽  
Vacuum Ultraviolet ◽  
Electrode Materials ◽  
Picea Jezoensis

ABSTRACTA novel flat, wood-based carbon material with heterogeneous pores, referred to as flat lignocellulosic carbon material (FLCM), was successfully fabricated by carbonizing samples of the softwood Picea jezoensis (Ezomatsu or Jezo spruce, a Japanese conifer). Simultaneous improvements of the specific surface area of the FLCM and the affinity of electric double-layer capacitor (EDLC) for electrolyte solvents were achieved by vacuum ultraviolet/ozone (VUV/O3) treatment. The specific surface area of the VUV/O3-treated FLCM showed a 50% increase over that of the original FLCM. The spectra measured by X-ray photoelectron spectroscopy (XPS) indicated that the number of O-C=O (carboxyl or ester) bonds increased, whereas the number of C-C bonds decreased. Additionally, the feasibility of using the FLCM as a self-supporting electrode in EDLCs was examined by measuring the electrochemical properties in a three-electrode system. The FLCM was confirmed as an appropriate self-supporting EDLC electrode material without warps and cracks. In addition, the FLCM can be used without any binder. Realization of FLCM-based EDLC electrodes with bendability, an area of several tens of square centimeters, and no risk of warp or crack formation, were indicated. Thus, FLCMs present a fascinating class of self-supporting carbon electrode materials for EDLCs.

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.

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
Sign in / Sign up

Export Citation Format

Share Document