Effect of Mesopore Ordering in Otherwise Similar Micro/Mesoporous Carbons on the High-Rate Performance of Electric Double-Layer Capacitors

2014 ◽  
Vol 118 (48) ◽  
pp. 27715-27720 ◽  
Author(s):  
Mani Karthik ◽  
Edurne Redondo ◽  
Eider Goikolea ◽  
Vladimir Roddatis ◽  
Stefania Doppiu ◽  
...  
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
High Rate ◽  
Mesoporous Carbons ◽  
Rate Performance ◽  
Double Layer Capacitors ◽  
High Rate Performance ◽  
Electric Double Layer Capacitors

scholarly journals A Holey Graphene Additive for Boosting Performance of Electric Double-Layer Supercapacitors

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 765
Author(s):  
Jun-Bin Huang ◽  
Jagabandhu Patra ◽  
Ming-Hsien Lin ◽  
Ming-Der Ger ◽  
Yih-Ming Liu ◽  
...  
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
Graphene Nanosheets ◽  
Low Cost ◽  
Scale Up ◽  
Synthesis Temperature ◽  
High Rate ◽  
Active Materials ◽  
Double Layer Capacitors ◽  
High Rate Performance

We demonstrate a facile and effective method, which is low-cost and easy to scale up, to fabricate holey graphene nanosheets (HGNSs) via ultrafast heating during synthesis. Various heating temperatures are used to modify the material properties of HGNSs. First, we use HGNSs as the electrode active materials for electric double-layer capacitors (EDLCs). A synthesis temperature of 900 °C seems to be optimal, i.e., the conductivity and adhesion of HGNSs reach a compromise. The gravimetric capacitance of this HGNS sample (namely HGNS-900) is 56 F·g−1. However, the volumetric capacitance is low, which hinders its practical application. Secondly, we incorporate activated carbon (AC) into HGNS-900 to make a composite EDLC material. The effect of the AC:HGNS-900 ratio on the capacitance, high-rate performance, and cycling stability are systematically investigated. With a proper amount of HGNS-900, both the electrode gravimetric and volumetric capacitances at high rate charging/discharging are clearly higher than those of plain AC electrodes. The AC/HGNS-900 composite is a promising electrode material for nonaqueous EDLC applications.

Effects of the mesostructural order on the electrochemical performance of hierarchical micro–mesoporous carbons

2014 ◽  
Vol 2 (30) ◽  
pp. 12023-12030 ◽  
Author(s):  
M. Enterría ◽  
A. Castro-Muñiz ◽  
F. Suárez-García ◽  
A. Martínez-Alonso ◽  
J. M. D. Tascón ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Double Layer ◽  
Electric Double Layer ◽  
Architectural Design ◽  
Mesoporous Carbons ◽  
Porous Carbons ◽  
Double Layer Capacitors ◽  
Ordered Porous ◽  
Electric Double Layer Capacitors

Hierarchical ordered porous carbons show a better behavior as electric double layer capacitors (EDLCs) than disordered carbons especially at high rates thanks to their unique architectural design.

Superior electric double layer capacitors using ordered mesoporous carbons

Carbon ◽  
2006 ◽  
Vol 44 (2) ◽  
pp. 216-224 ◽  
Author(s):  
W. Xing ◽  
S.Z. Qiao ◽  
R.G. Ding ◽  
F. Li ◽  
G.Q. Lu ◽  
...  
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
Mesoporous Carbons ◽  
Ordered Mesoporous Carbons ◽  
Ordered Mesoporous ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

Mesoporous carbon spheres grafted with carbon nanofibers for high-rate electric double layer capacitors

Carbon ◽  
2011 ◽  
Vol 49 (3) ◽  
pp. 895-903 ◽  
Author(s):  
Cheng-Wei Huang ◽  
Chun-Han Hsu ◽  
Ping-Lin Kuo ◽  
Chien-Te Hsieh ◽  
Hsisheng Teng
Keyword(s):  
Carbon Nanofibers ◽  
Double Layer ◽  
Electric Double Layer ◽  
Mesoporous Carbon ◽  
High Rate ◽  
Carbon Spheres ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors
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