scholarly journals Cross-linked poly(ionic liquid) as precursors for nitrogen-doped porous carbons

RSC Advances ◽  
2019 ◽  
Vol 9 (15) ◽  
pp. 8137-8145 ◽  
Author(s):  
Shifu Cheng ◽  
Bihua Chen ◽  
Li Qin ◽  
Yongya Zhang ◽  
Guohua Gao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Network Structure ◽  
Porous Carbons ◽  
Nitrogen Doped ◽  
The Cross ◽  
Poly Ionic Liquid

The cross-linked PIL with “network structure” can fabricate nitrogen-doped porous carbons with higher specific surface area.

Anion exchange: a novel way of preparing hierarchical porous structure in poly(ionic liquid)s

2017 ◽  
Vol 53 (26) ◽  
pp. 3785-3788 ◽  
Author(s):  
Li Qin ◽  
Binshen Wang ◽  
Yongya Zhang ◽  
Li Chen ◽  
Guohua Gao
Keyword(s):  
Ionic Liquid ◽  
Specific Surface ◽  
Porous Structure ◽  
Surface Area ◽  
Anion Exchange ◽  
Specific Surface Area ◽  
Hierarchical Porous Structure ◽  
Hierarchical Porous ◽  
Poly Ionic Liquid

The exchange of bulky salicylate and its dimers/clusters in PILs by other smaller anions increased specific surface area and fabricated a hierarchical porous structure.

KCl-assisted activation: Moringa oleifera branch-derived porous carbon for high performance supercapacitor

2021 ◽  
Vol 45 (12) ◽  
pp. 5712-5719
Author(s):  
Yongxiang Zhang ◽  
Peifeng Yu ◽  
Mingtao Zheng ◽  
Yong Xiao ◽  
Hang Hu ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Porous Carbon ◽  
High Performance ◽  
Moringa Oleifera ◽  
High Specific Surface Area ◽  
Porous Carbons

Porous carbons with a high specific surface area (2314–3470 m2 g−1) are prepared via a novel KCl-assisted activation strategy for high-performance supercapacitor.

Enteromorpha based porous carbons activated by zinc chloride for supercapacitors with high capacity retention

RSC Advances ◽  
2015 ◽  
Vol 5 (21) ◽  
pp. 16575-16581 ◽  
Author(s):  
Mingbo Wu ◽  
Peng Li ◽  
Yang Li ◽  
Jun Liu ◽  
Yang Wang
Keyword(s):  
Specific Surface ◽  
Specific Capacitance ◽  
Surface Area ◽  
Specific Surface Area ◽  
Zinc Chloride ◽  
Porous Carbon ◽  
High Capacity ◽  
Porous Carbons ◽  
Capacity Retention

Porous carbons were prepared from enteromorpha with ZnCl2 as active reagent. The prepared porous carbon with a specific surface area of 1651 m2 g−1 exhibited a specific capacitance of 206 F g−1 and capacity retention of 93% even after 5000 cycles.

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.

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.

A porous ternary PtPdCu alloy with a spherical network structure for electrocatalytic methanol oxidation

RSC Advances ◽  
2016 ◽  
Vol 6 (86) ◽  
pp. 83373-83379 ◽  
Author(s):  
Yang Fan ◽  
Yan Zhang ◽  
Ying Cui ◽  
Jiaoli Wang ◽  
Mengmeng Wei ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Methanol Oxidation ◽  
Ternary Alloy ◽  
Specific Surface Area ◽  
Network Structure ◽  
Electrocatalytic Activity ◽  
High Specific Surface Area

A porous ternary alloy Pt5PdCu5 was prepared, which exhibits a unique spherical network structure with a high specific surface area of 86.9 m2 g−1 and enhanced electrocatalytic activity towards methanol oxidation.

Sign in / Sign up

Export Citation Format

Share Document