TY - JOUR
T1 - Graphene/MxWO3 (M = Na, K) nanohybrids with excellent electrical properties
AU - Liu, Bin
AU - Yin, Shu
AU - Wu, Xiaoyong
AU - Wang, Yuhua
AU - Huang, Yunfang
AU - Wu, Jihuai
AU - Sekino, Tohru
AU - Matsushita, Junichi
AU - Lee, Soo Wohn
AU - Kobayashi, Makoto
AU - Kakihana, Masato
AU - Sato, Tsugio
N1 - Funding Information:
This research was partly supported by the Network Joint Research Center for Materials and Devices , the Grant-in-Aid for Science Research (No. 23241025 , No. 25289245 ), the H26 Project of the Center for Exploration of New Inorganic Materials in IMRAM , Tohoku University , the Nippon Sheet Glass Foundation for Materials Science and Engineering , the Hosokawa Powder Technology Foundation , the NEDO Project (Development of fundamental technology for novel energy-controlling materials realizing varying barrier functions), the National Research Foundation (NRF) of Korea under the Global Research Laboratory (GRL) program, and the International Sci. and Tech. Cooperation Foundation of Gansu Provincial, China (Grant No. 1304WCGA177 ).
Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2015/8/29
Y1 - 2015/8/29
N2 - 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 (5 vol.%)/N2 atmosphere at 600 °C. The coupled samples showed good shielding properties in NIR wavelength range together with certain visible lights transparency. The as-prepared tungsten bronze nanoparticles are homogeneously anchored on graphene sheets, and the graphene/tungsten bronze nanocomposite showed an enhanced electrical conductivity with good shielding properties in the NIR range together with certain visible lights transparency. With the increment of graphene amount in the composites, the contact between the graphene sheets was enhanced, and the MxWO3 might enhance the charge transport properties of graphene by generating the short conductive path for electrons over the remained oxygenated functional groups. The synergistic effects could be observed in the composites. 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.
AB - 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 (5 vol.%)/N2 atmosphere at 600 °C. The coupled samples showed good shielding properties in NIR wavelength range together with certain visible lights transparency. The as-prepared tungsten bronze nanoparticles are homogeneously anchored on graphene sheets, and the graphene/tungsten bronze nanocomposite showed an enhanced electrical conductivity with good shielding properties in the NIR range together with certain visible lights transparency. With the increment of graphene amount in the composites, the contact between the graphene sheets was enhanced, and the MxWO3 might enhance the charge transport properties of graphene by generating the short conductive path for electrons over the remained oxygenated functional groups. The synergistic effects could be observed in the composites. 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.
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U2 - 10.1016/j.carbon.2015.06.072
DO - 10.1016/j.carbon.2015.06.072
M3 - Article
AN - SCOPUS:84940367052
SN - 0008-6223
VL - 94
SP - 309
EP - 316
JO - Carbon
JF - Carbon
ER -