Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 789, Issue -, Pages 777-784Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.03.012
Keywords
Hierarchical porosity; Activated carbon; Rice husks; Natural template; Supercapacitors
Categories
Funding
- Bureau of Science and Technology of Changchun City [15SS06]
- Jilin Engineering Research Center for Biomass Resource Utilization
- National Nature Science Foundation of China [51502108]
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Development of the synthesis methods of rice husk-based activated carbon (AC) as electrode materials by utilizing the natural silica template effect has been of special interests for high quality electrode material design. To enhance the silica template efficiency, a selective leaching out of the useless silica exposed on sample surface using NaOH solution at a moderate condition was adopted. The actual silica template located within the sample could be preserved and work with alkali activators to open the firm carbon texture, offer more active sites for pore generation, and therefore could improve the specific capacitance. The electrochemical performance of the prepared AC products was thoroughly characterized and a high specific capacitance together with extraordinary cycling stability was observed. This strategy offered an applicable way to facilitate industrial synthesis of high quality AC based electrodes for advanced supercapacitors. (C) 2019 Elsevier B.V. All rights reserved.
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