Graphene/Tungsten Bronze Type MxWO3 (M=Na, K) Nanohybrids with Excellent Electrical Properties

摘要

Graphene/MxWO3 (M=Na, K) nanocomposites with different weight ratios were successfully synthesized using MBH4 as a reducing agent in aqueous solution, followed by crystallization of amorphous precursors under calcination in H2(5vol.%)/N2 atmosphere at 600 oC. The coupled samples showed good shielding properties in NIR wavelength range together with certain visible lights transparency. The synergistic effects could be observed for the composites, i.e., when 5 wt. % or more graphene were composed into MxWO3, the hybrid composite showed the higher electrical conductivity than those of uncoupled graphene and tungsten bronze alone.