scholarly journals Fabrication of high B-doped ordered mesoporous carbon with 4-hydroxyphenylborate phenolic resin for supercapacitor electrode materials

RSC Advances ◽  
2020 ◽  
Vol 10 (19) ◽  
pp. 11210-11218 ◽  
Author(s):  
Yan Zhang ◽  
Fengsong Qi ◽  
Yujian Liu
Keyword(s):  
Mesoporous Carbon ◽  
Phenolic Resin ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
Electrochemical Performances ◽  
Ordered Structure ◽  
Supercapacitor Electrode ◽  
Boron Doped ◽  
Ordered Mesoporous ◽  
Supercapacitor Electrode Materials

The HPB-OMCs, with 3.96 wt% boron-doped and well-ordered structure, show a much high specific capacitance of 183 F g−1 at the current density of 1 A g−1 and ideal electrochemical performances.

A Facile Synthesis of NiFe2O4 with High Specific Capacitance as Supercapacitor Electrode Material

2018 ◽  
Vol 281 ◽  
pp. 854-858
Author(s):  
Xi Cheng Gao ◽  
Jian Qiang Bi ◽  
Wei Li Wang ◽  
Guo Xun Sun ◽  
Xu Xia Hao ◽  
...  
Keyword(s):  
Particle Size ◽  
Specific Capacitance ◽  
Electrochemical Property ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
Constant Current ◽  
X Ray Diffraction ◽  
Supercapacitor Electrode ◽  
Constant Current Charge ◽  
Supercapacitor Electrode Materials

NiFe2O4 powders were synthesized by a facile hydrothermal method at 180°C followed by a thermal treatment at 300°C. The phase composition and morphology were analyzed by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results showed that the NiFe2O4 powders were well-crystallized, and they possessed a particle size in the range of 50-100 nm. The electrochemical property was characterized via cyclic voltammetry (CV) and constant current charge-discharge method. Encouragingly, the NiFe2O4 powders had an excellent electrochemical property, whose specific capacitance reached 266.84 F/g at the electric current density of 1 A/g due to the small particle size. Compared with other Fe-based metal compound oxides, NiFe2O4 has a better electrochemical performance, which can be widely used in the supercapacitor electrode materials.

Ordered Mesoporous Carbon Nano Spheres as Electrode Material for Supercapacitors

2013 ◽  
Vol 320 ◽  
pp. 661-664
Author(s):  
Hai Jing Zhao ◽  
Dong Lin Zhao ◽  
Ji Ming Zhang ◽  
Dong Dong Zhang
Keyword(s):  
Mesoporous Carbon ◽  
Electrode Materials ◽  
Rate Capability ◽  
Nitrogen Adsorption ◽  
Ordered Mesoporous Carbon ◽  
Electrochemical Performances ◽  
Carbon Nanospheres ◽  
Electrochemical Testing ◽  
Ordered Mesoporous ◽  
Coating Method

Ordered mesoporous carbon nanospheres with uniformly penetrating channels have been successfully synthesized by a nanocasting method using mesoporous silica as a template. The ordered mesoporous carbon nanospheres were investigated as electrode materials for supercapacitors via high-resolution transmission electron microscopy, nitrogen adsorption and desorption isotherms and a variety of electrochemical testing techniques. The electrodes with ordered mesoporous carbon nanospheres prepared by coating method exhibited good rate capability and reversibility at high scan rates in electrochemical performances. Ordered mesoporous carbon nanosphere electrode with specific surface area of 904 m2/g maintained a stable specific capacitance of 210 F g-1under specific current of 0.1 A g-1for 500 cycles of charge/discharge.

Effect of dopant on the morphology and electrochemical performance of Ni1-xCaxCo2O4 (0 ≤ x ≤ 0.8) oxide hierarchical structures

MRS Advances ◽  
2020 ◽  
pp. 1-8
Author(s):  
D. Guragain ◽  
C. Zequine ◽  
R. Bhattarai ◽  
J. Choi ◽  
R. K. Gupta ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Energy Band ◽  
Electrode Materials ◽  
Morphological Structure ◽  
Hierarchical Structures ◽  
High Specific Capacitance ◽  
Supercapacitor Electrode ◽  
Binary Metal Oxides ◽  
Supercapacitor Electrode Materials

ABSTRACT The binary metal oxides are increasingly used as supercapacitor electrode materials in energy storing devices. Particularly NiCo2O4 has shown promising electrocapacitive performance with high specific capacitance and energy density. The electrocapacitive performance of these oxides largely depends on their morphology and electrical properties governed by their energy band-gaps and defects. The morphological structure of NiCo2O4 can be altered via the synthesis route, while the energy band-gap could be altered by doping. Also, doping can enhance crystal stability and bring in grain refinement, which can further improve the much-needed surface area for high specific capacitance. Given the above, this study evaluates the electrochemical performance of Ca-doped Ni1-xCaxCo2O4 (0 ≤ x ≤ 0.8) compounds. This stipulates promising applications for electrodes in future supercapacitors.

Mn0.5Co2.5O4 nanofibers sandwiched in graphene sheets for efficient supercapacitor electrode materials

RSC Advances ◽  
2016 ◽  
Vol 6 (106) ◽  
pp. 103923-103929 ◽  
Author(s):  
Jinzuan Wang ◽  
Jun Yang ◽  
Tao Huang ◽  
Wenyan Yin
Keyword(s):  
Electrical Conductivity ◽  
Active Sites ◽  
Electrode Materials ◽  
Graphene Sheets ◽  
Electrochemical Performances ◽  
Supercapacitor Electrode ◽  
Supercapacitor Electrode Materials

With unique sandwich-like structures, rich active sites, and boosted electrical conductivity, the Mn0.5Co2.5O4@G composite demonstrates superior electrochemical performances for supercapacitors.

Expeditious fabrication of flower-like hierarchical mesoporous carbon superstructures as supercapacitor electrode materials

2014 ◽  
Vol 2 (40) ◽  
pp. 16884-16891 ◽  
Author(s):  
Jiyuan Liang ◽  
Shenglan Chen ◽  
Mingjiang Xie ◽  
Yongzheng Wang ◽  
Xiangke Guo ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Electrode Materials ◽  
Hydrothermal Reaction ◽  
Supercapacitor Electrode ◽  
One Pot ◽  
Supercapacitor Electrode Materials

Flower-like hierarchical mesoporous carbon superstructures (FMCS), fabricated by one-pot hydrothermal reaction, exhibit outstanding supercapacitive performances.

Sign in / Sign up

Export Citation Format

Share Document