Preparation and characterization of silica-modified activated carbon fibers

Author(s):  
Akihiko Matsumoto ◽  
Masatoshi Ruike ◽  
Takaomi Suzuki ◽  
Katsumi Kaneko
Langmuir ◽  
1996 ◽  
Vol 12 (11) ◽  
pp. 2820-2824 ◽  
Author(s):  
D. Cazorla-Amorós ◽  
J. Alcañiz-Monge ◽  
A. Linares-Solano

Author(s):  
Zahra Abedi ◽  
Desiree Leistenschneider ◽  
Douglas Ivey ◽  
Weixing Chen

Abstract Birnessite type Mn oxide (potassium birnessite hydrate) powder (as-δ-MnO2) with a layered microstructure was prepared via a hydrothermal process. To improve its capacitive performance, the microstructure was thermally modified (annealed) at 400 oC (400-δ-MnO2) in a N2 reducing environment. By removing the hydrated cations (K+) layers inserted between the main layers of birnessite, damaging the microstructure, intercalation/deintercalation of the electrolyte species (Li+1) became more effective. Characterization of as-δ-MnO2 and 400-δ-MnO2 revealed that no phase transformation occurred during the annealing process. The microstructure became less crystalline and the total pore volume increased from 0.20 cm3 g-1 to 0.43 cm3 g-1, while the oxidation state of Mn remained 4+ after annealing the as-δ-MnO2 at 400 oC. The 400-δ-MnO2 sample was then coated on asphaltene derived activated carbon fibers (ACF-400-δ-MnO2) to improve the performance by making use of the high electrical conductivity and capacitive behavior of ACF. Coating the 400-δ-MnO2 sample led to a significant increase in the capacitance (328 F g-1 and 195 F g-1 for ACF-400-δ-MnO2 and 400-δ-MnO2 at 0.4 A g-1, respectively), improved energy and power values (~7 kW kg-1 at ~4.2 Wh kg-1 for ACF-400-δ-MnO2 and 240 W kg-1 at 2.4 Wh kg-1 for 400-δ-MnO2) and improved cycling behavior.


2010 ◽  
Vol 158 (3-4) ◽  
pp. 515-520 ◽  
Author(s):  
Bingzheng Li ◽  
Zhiping Lei ◽  
Xiaohang Zhang ◽  
Zhanggen Huang

2009 ◽  
Vol 113 (14) ◽  
pp. 5886-5890 ◽  
Author(s):  
Cristian I. Contescu ◽  
Craig M. Brown ◽  
Yun Liu ◽  
Vinay V. Bhat ◽  
Nidia C. Gallego

2006 ◽  
Vol 110 (20) ◽  
pp. 9764-9767 ◽  
Author(s):  
Yoshiyuki Hattori ◽  
Hideki Tanaka ◽  
Fujio Okino ◽  
Hidekazu Touhara ◽  
Yoshitaka Nakahigashi ◽  
...  

RSC Advances ◽  
2018 ◽  
Vol 8 (43) ◽  
pp. 24665-24672 ◽  
Author(s):  
Chencheng Zhang ◽  
Pingfang Han ◽  
Xiaoping Lu ◽  
Qinghui Mao ◽  
Jiangang Qu ◽  
...  

Herein, we describe the hydrothermal immobilization of BiVO4 on activated carbon fibers, using Reactive Black KN-B photocatalytic performance evaluation and establishing the experimental conditions yielding maximalphotocatalytic activity.


2007 ◽  
Vol 25 (4) ◽  
pp. 553-557 ◽  
Author(s):  
Bing-Yu Jia ◽  
Li-Yan Duan ◽  
Chuan-Li Ma ◽  
Chun-Ming Wang

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