4.5 Article

Enhanced thermoelectric properties of Ag-doped MnO2 single crystal nanowires for room-temperature application

期刊

MATERIALS RESEARCH EXPRESS
卷 6, 期 7, 页码 -

出版社

IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/ab18bc

关键词

Ag-doped; single crystal; nanowires; figure of merit (ZT); thermoelectricity

资金

  1. National Natural Science Foundation of China [21371049, 51372070]
  2. Henan province natural science foundation [162300410040]
  3. Key Project of Education Department of Henan Province [14B430010]

向作者/读者索取更多资源

Based on colossal Seebeck coefficient [Nanotechnology, 2012, 23, 085401], here we focused on electrical transportation of single crystal nanowire structure and Ag dopant on improving the figure of merit (ZT) for MnO2. In this work, a series of Mn1-xAgxO2 (x = 0, 0.01 wt%, 0.02 wt%, 0.05 wt%, 0.1 wt%) single crystal nanowires have been firstly synthesized by a simple and green chemical vapor deposition (CVD) method where 0.01 wt% doped MnO2 is considered as a good candidate due to its promising electrical transport properties. Although there is at room-temperature, the maximum ZT is achievable 0.0075 for the 0.01 wt% Ag-doped sample at 300 K, which may be attributed to single crystal nanowire structure, together with effective number of charge carrier concentration caused by the Ag dopant. Ag-doped MnO2 single crystal nanowires provide a new possibility for green collecting energy at room-temperature.

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