期刊
MATERIALS LETTERS
卷 182, 期 -, 页码 1-5出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.06.046
关键词
Carbon materials; Energy storage and conversion; Porous materials; Sodium alginate
资金
- National Natural Science Foundation of China [11104126, 51261014]
Herein, we use a facile one-pot strategy to synthesis hierarchical porous carbon from sodium alginate (SA). After pre-conditioned at 200 degrees C, SA was activated by a small amount of NaOH at 800 degrees C. In the sintering process, the SA can achieve a self-activation effect which can effectively reduce the dosage of alkaline activator (in a weight ratio of 5:4) during activating process. Finally, the end product exhibits a capacity of 451 F/g in 2 M KOH aqueous solution and exhibit excellent rate ability. The cycle ability of OSADC-5 was tested at 10 A/g, and after 10,000 cycles the capacitance retention is 99% which shows superb electrochemistry stability. (C) 2016 Elsevier B.V. All rights reserved.
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