Activated carbon from nitrogen rich watermelon rind for high-performance supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (64) ◽  
pp. 59333-59342 ◽  
Author(s):  
Ru-Juan Mo ◽  
Yang Zhao ◽  
Min Wu ◽  
Hong-Mei Xiao ◽  
Shigenori Kuga ◽  
...  

Nitrogen rich biomass materials was selected as precursor of nitrogen-doped carbon materials for supercapacitor for the first time.

RSC Advances ◽  
2021 ◽  
Vol 11 (15) ◽  
pp. 8628-8635
Author(s):  
Chang Ki Kim ◽  
Jung-Min Ji ◽  
M. Aftabuzzaman ◽  
Hwan Kyu Kim

The incorporation of the Te element into nitrogen-doped carbon-based nanomaterials is a good strategy to improve the capacitive performance of carbon materials and the incorporation of two types of atoms improves the overall capacitive performance of the materials due to a synergetic effect.


RSC Advances ◽  
2021 ◽  
Vol 11 (47) ◽  
pp. 29555-29563
Author(s):  
Songlin Zhao ◽  
Fushan Chen ◽  
Qunfeng Zhang ◽  
Lingtao Meng

Nitrogen-doped porous carbon materials have high potential in metal-free electrocatalysts, which is essential for several renewable energy conversion systems.


2017 ◽  
Vol 41 (15) ◽  
pp. 7392-7399 ◽  
Author(s):  
Cancan Wang ◽  
Winston Duo Wu ◽  
Ying Wang ◽  
Dan Xu ◽  
Feng Yan

Gentiana scabraBunge-derived porous carbon materials as high-performance catalysts for the oxygen reduction reaction in both acidic and alkaline solutions were introduced.


2019 ◽  
Vol 7 (21) ◽  
pp. 13154-13163 ◽  
Author(s):  
Yuntong Li ◽  
Ling Liu ◽  
Yuzhe Wu ◽  
Tong Wu ◽  
Haiyang Wu ◽  
...  

Hierarchical porous nitrogen-doped carbon materials possess an outstanding supercapacitance performance in both acidic and alkaline electrolytes.


Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3175
Author(s):  
Lok Kumar Shrestha ◽  
Rekha Goswami Shrestha ◽  
Rashma Chaudhary ◽  
Raja Ram Pradhananga ◽  
Birendra Man Tamrakar ◽  
...  

Biomass-derived activated carbon materials with hierarchically nanoporous structures containing nitrogen functionalities show excellent electrochemical performances and are explored extensively in energy storage and conversion applications. Here, we report the electrochemical supercapacitance performances of the nitrogen-doped activated carbon materials with an ultrahigh surface area prepared by the potassium hydroxide (KOH) activation of the Nelumbo nucifera (Lotus) seed in an aqueous electrolyte solution (1 M sulfuric acid: H2SO4) in a three-electrode cell. The specific surface areas and pore volumes of Lotus-seed–derived carbon materials carbonized at a different temperatures, from 600 to 1000 °C, are found in the range of 1059.6 to 2489.6 m2 g−1 and 0.819 to 2.384 cm3 g−1, respectively. The carbons are amorphous materials with a partial graphitic structure with a maximum of 3.28 atom% nitrogen content and possess hierarchically micro- and mesoporous structures. The supercapacitor electrode prepared from the best sample showed excellent electrical double-layer capacitor performance, and the electrode achieved a high specific capacitance of ca. 379.2 F g−1 at 1 A g−1 current density. Additionally, the electrode shows a high rate performance, sustaining 65.9% capacitance retention at a high current density of 50 A g−1, followed by an extraordinary long cycle life without any capacitance loss after 10,000 subsequent charging/discharging cycles. The electrochemical results demonstrate that Nelumbo nucifera seed–derived hierarchically porous carbon with nitrogen functionality would have a significant probability as an electrical double-layer capacitor electrode material for the high-performance supercapacitor applications.


2015 ◽  
Vol 33 (11) ◽  
pp. 1293-1302 ◽  
Author(s):  
Junke Ou ◽  
Lin Yang ◽  
Yongzhi Zhang ◽  
Li Chen ◽  
Yong Guo ◽  
...  

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