Fabrication of nitrogen-doped hierarchical porous carbons from Sargassum as advanced electrode materials for supercapacitors

2021 ◽  
Author(s):  
Feiqiang Guo ◽  
Yinbo Zhan ◽  
Xiaopeng Jia ◽  
Huiming Zhou ◽  
Shuang Liang ◽  
...  
Keyword(s):  
High Performance ◽  
Nitrogen Doping ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Koh Activation ◽  
Porous Carbons ◽  
Nitrogen Doped ◽  
Novel Approach ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons

Using Sargassum as the precursor, a novel approach was developed to synthesize three-dimensional porous carbons as high-performance electrode materials for supercapacitors via KOH activation and subsequent nitrogen-doping employing melamine as...

Porous nitrogen-doped hollow carbon spheres derived from polyaniline for high performance supercapacitors

2014 ◽  
Vol 2 (15) ◽  
pp. 5352-5357 ◽  
Author(s):  
Jinpeng Han ◽  
Guiyin Xu ◽  
Bing Ding ◽  
Jin Pan ◽  
Hui Dou ◽  
...  
Keyword(s):  
Porous Structure ◽  
High Performance ◽  
Nitrogen Doping ◽  
Electrode Materials ◽  
Carbon Spheres ◽  
Hierarchical Porous Structure ◽  
Nitrogen Doped ◽  
Hierarchical Porous ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

The porous nitrogen-doped hollow carbon spheres derived from polyaniline are promising electrode materials for high performance supercapacitors due to their hierarchical porous structure and nitrogen-doping.

scholarly journals Macroalgae-derived nitrogen-doped hierarchical porous carbons with high performance for H2 storage and supercapacitors

RSC Advances ◽  
2017 ◽  
Vol 7 (52) ◽  
pp. 32795-32805 ◽  
Author(s):  
Xingxing Wu ◽  
Zhongwei Tian ◽  
Langqing Hu ◽  
Sha Huang ◽  
Jinjun Cai
Keyword(s):  
Surface Area ◽  
Pore Volume ◽  
High Performance ◽  
Enteromorpha Prolifera ◽  
Porous Carbons ◽  
Excellent Performance ◽  
Nitrogen Doped ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons

Enteromorpha prolifera was converted into hierarchical carbons through the carbonization and activation with surface area and pore volume up to 3345 m2 g−1 and 1.94 cm3 g−1, showing excellent performance for H2 storage and supercapacitors.

scholarly journals Three-dimensional ordered macroporous ZIF-8 nanoparticle-derived nitrogen-doped hierarchical porous carbons for high-performance lithium–sulfur batteries

RSC Advances ◽  
2020 ◽  
Vol 10 (69) ◽  
pp. 41983-41992
Author(s):  
Xinxin Ji ◽  
Qian Li ◽  
Haoquan Yu ◽  
Xiaolin Hu ◽  
Yuanzheng Luo ◽  
...  
Keyword(s):  
High Performance ◽  
Specific Capacity ◽  
Three Dimensional ◽  
High Specific Capacity ◽  
Nitrogen Doped ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons ◽  
Lithium Sulfur Batteries ◽  
Ordered Macroporous ◽  
Lithium Sulfur

Lithium–sulfur (Li–S) batteries have attracted considerable attention due to their ultra-high specific capacity and energy density.

Cation exchanged MOF-derived nitrogen-doped porous carbons for CO2capture and supercapacitor electrode materials

2017 ◽  
Vol 5 (20) ◽  
pp. 9544-9552 ◽  
Author(s):  
Ying Pan ◽  
Yuxin Zhao ◽  
Shanjun Mu ◽  
Yu Wang ◽  
Chunming Jiang ◽  
...  
Keyword(s):  
Active Site ◽  
Electrode Materials ◽  
Porous Carbons ◽  
Supercapacitor Electrode ◽  
Nitrogen Doped ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons ◽  
Supercapacitor Electrode Materials

N-Doped hierarchical porous carbons with enhanced microporosity were prepared byin situintroduction of active site K+into MOF precursors.

From a ZIF-8 polyhedron to three-dimensional nitrogen doped hierarchical porous carbon: an efficient electrocatalyst for the oxygen reduction reaction

2018 ◽  
Vol 6 (23) ◽  
pp. 10731-10739 ◽  
Author(s):  
Cuijuan Xuan ◽  
Baoshan Hou ◽  
Weiwei Xia ◽  
Zongkai Peng ◽  
Tao Shen ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Porous Carbons ◽  
Hierarchical Porous Carbon ◽  
Nitrogen Doped ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons

Three-dimensional nitrogen doped hierarchical porous carbons are synthesized by NaCl-assisted pyrolysis exfoliation of a ZIF-8 polyhedron with enhanced ORR electrocatalytic activities.

Preparation of hierarchical porous carbon with high capacitance

2018 ◽  
Vol 15 (3) ◽  
pp. 323-329 ◽  
Author(s):  
Yuming Guan ◽  
Jingbo Mu ◽  
Hongwei Che ◽  
Xiaoliang Zhang ◽  
Zhixiao Zhang
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Phenol Formaldehyde ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Koh Activation ◽  
Type I ◽  
Content Type ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons

Purpose The purpose of this study is to design carbon electrode materials for high performance electric double-layer capacitors (EDLCs) with pores that are large enough and have suitable pore size distribution for the electrolyte to access completely to improve EDLCs’ electrochemical performance. Design/methodology/approach This study develop an improved traditional KOH activation method, and a series of micro-meso hierarchical porous carbons have been successfully prepared from phenol formaldehyde resin by combining polyethylene glycol (PEG) and conventional KOH activation. Findings As evidenced by N2 adsorption/desorption tests, the obtained samples present Types IV and I-IV hybrid shape isotherms compared with KOH-activated resin (typical of Type I). The sample AC2-7-1, which the addition quantity of PEG is 25 per cent PF (weight ration) activated at 700? For 1 h is considered as the optimum preparation condition. It exhibits the highest specific capacitance value of 240 F/g in 30 wt% KOH aqueous electrolytes because of its higher specific surface area (2085 m2/g), greater pore volume (1.08 cm3/g) and the maximum mesoporosity (43 per cent). In addition, the capacity decay of this material is only 3.1 per cent after 1000 cycles. Originality/value The materials that are rich in micropores and mesopores show great potential in EDLC capacitors, particularly for applications where high power output and good high-frequency capacitive performances are required.

One-step production of O-N-S co-doped three-dimensional hierarchical porous carbons for high-performance supercapacitors

Nano Energy ◽  
2018 ◽  
Vol 47 ◽  
pp. 547-555 ◽  
Author(s):  
Gongyuan Zhao ◽  
Chong Chen ◽  
Dengfeng Yu ◽  
Lei Sun ◽  
Chenhui Yang ◽  
...  
Keyword(s):  
High Performance ◽  
Three Dimensional ◽  
Porous Carbons ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons ◽  
One Step ◽  
Co Doped
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