期刊
CHINESE JOURNAL OF CHEMISTRY
卷 34, 期 1, 页码 89-97出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cjoc.201500546
关键词
graphene hydrogels; NaH2PO2; electrochemical capacitors; hydrothermal
资金
- National Natural Science Foundation of China [21574076, 21501113, 61504076, 21407100]
- National Natural Science Foundation of Shanxi Province [2014011016-1]
- Program for the Top Young and Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi [02035290 1014]
The hydrogels of reduced graphene oxide (rGOHGs) have been synthesized through treating GO with various concentrations of sodium hypophosphite (NaH2PO2) under hydrothermal condition. The results reveal that the structure of rGOHGs changes along with the increase of the concentration of NaH2PO2. The rGO sheets prepared with low concentration of NaH2PO2 exhibit more crimples and larger specific surface area than those prepared with high concentration of NaH2PO2. The measurements of the capacitive performances of rGOHGs reveal that the rGOHGs prepared with low concentration of NaH2PO2 possess larger specific capacitance (C-s) than that prepared with high concentration of NaH2PO2 at low cyclic voltammetry scan rates. However, the rGOHGs prepared with high concentration of NaH2PO2 possess larger C-s at high scan rates, more stability and better high-rate capability than those prepared at low concentration. It is believed that the structures and properties of rGOHGs can be adjusted by controlling the concentration of NaH2PO2 according to the requirement.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据