| 초록 |
Tungsten sulphide-carbon nanofiber composites as active anode materials were prepared by hydrothermalizing the composite solution of the sodium tungstate, ammonium fluoride as morphology-controlling agent, and urea as morphology-directing agent along with modified carbon fibers. The tungsten sulphide on modified carbon fibers provides abundant electrochemical sites due to mesoporous structure and electronic network enforcing the intimate contact between electrolyte and electrode, and buffering role preventing volume expansion during cycling. As a result, tungsten sulphide-carbon nanofiber composites attribute to better electrochemical performance by facilitating mass transfer and charge transfer and maintaining structural integrity without pulverization. |
