Facile one-step synthesis of highly graphitized hierarchical porous carbon nanosheets with large surface area and high capacity for lithium storage

RSC Advances ◽  
2016 ◽  
Vol 6 (56) ◽  
pp. 51146-51152 ◽  
Author(s):  
Qi Yang ◽  
Zongbin Zhao ◽  
Yanbao Jia ◽  
Yanfeng Dong ◽  
Zhengfa Yu ◽  
...  
Keyword(s):  
Surface Area ◽  
Porous Carbon ◽  
High Capacity ◽  
Large Specific Surface Area ◽  
Hierarchical Porous Carbon ◽  
Lithium Storage ◽  
Carbon Nanosheets ◽  
Graphitization Degree ◽  
Hierarchical Porous ◽  
One Step

Hierarchical porous carbon nanosheets with both high graphitization degree and large specific surface area were prepared and applied as anode for lithium storage, exhibiting a high reversible discharge capacity.

Ultrahigh-surface-area hierarchical porous carbon from chitosan: acetic acid mediated efficient synthesis and its application in superior supercapacitors

2017 ◽  
Vol 5 (47) ◽  
pp. 24775-24781 ◽  
Author(s):  
Jianyu Huang ◽  
Yeru Liang ◽  
Hang Hu ◽  
Simin Liu ◽  
Yijin Cai ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Surface Area ◽  
Porous Carbon ◽  
Efficient Synthesis ◽  
Hierarchical Porous Carbon ◽  
Capacitive Properties ◽  
Hierarchical Porous

Acetic acid mediated efficient synthesis of ultrahigh-surface-area hierarchical porous carbon from chitosan with very attractive capacitive properties was reported.

Preparation of Fe/N co-doped hierarchical porous carbon nanosheets derived from chitosan nanofibers for high-performance supercapacitors

2021 ◽  
pp. 1-16
Author(s):  
Yaqi Yang ◽  
Ziqiang Shao ◽  
Feijun Wang
Keyword(s):  
Specific Surface ◽  
Specific Capacitance ◽  
Surface Area ◽  
Double Layer ◽  
Specific Surface Area ◽  
Porous Carbon ◽  
Active Sites ◽  
Transport Pathway ◽  
Carbon Nanosheets ◽  
Hierarchical Porous

Abstract Due to the low specific capacitance and small specific surface area of conventional carbon materials used as electrode materials for double-layer capacitors, the search for more ideal materials and ingenious preparation methods remains a major challenge. In this study, fractional porous carbon nanosheets were prepared by co-doping Fe and N with chitosan as nitrogen source. The advantage of this method is that the carbon nanosheets can have a large number of pore structures and produce a large specific surface area. The presence of Fe catalyzes the graphitization of carbon in the carbon layer during carbonization process, and further increases the specific surface area of the electrode material. This structure provides an efficient ion and electron transport pathway, which enables more active sites to participate in the REDOX reaction, thus significantly enhancing the electrochemical performance of SCs. The specific surface area of CS-800 is up to 1587 m2 g−1. When the current density is 0.5 A g−1, the specific capacitance of CS-800 reaches 308.84 F g−1, and remains 84.61 % of the initial value after 10,000 cycles. The Coulomb efficiency of CS-800 is almost 100 % after a long cycle, which indicates that CS-800 has more ideal double-layer capacitance and pseudo capacitance.

Biowaste-Derived Hierarchical Porous Carbon Nanosheets for Ultrahigh Power Density Supercapacitors

ChemSusChem ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 1678-1685 ◽  
Author(s):  
Dengfeng Yu ◽  
Chong Chen ◽  
Gongyuan Zhao ◽  
Lei Sun ◽  
Baosheng Du ◽  
...  
Keyword(s):  
Power Density ◽  
Porous Carbon ◽  
Hierarchical Porous Carbon ◽  
Carbon Nanosheets ◽  
Hierarchical Porous
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