Synthesis of α-Mo_2C by Carburization of α-MoO_3 Nanowires and Its Electrocatalytic Activity towards Tri-iodide Reduction for Dye-Sensitized Solar Cells  

作　　者：J.Theerthagiri R.A.Senthil M.H.Buraidah J.Madhavan A.K.Arof 

机构地区：[1]Solar Energy Lab,Department of Chemistry,Thiruvalluvar University [2]Centre for Ionics University of Malaya,Department of Physics,University of Malaya

出　　处：《Journal of Materials Science & Technology》2016年第12期1339-1344,共6页材料科学技术（英文版）

基　　金：the financial support from the Department of Atomic Energy–Board of Research in Nuclear Sciences(DAE-BRNS)(Grant No.2013/37P/1/BRNS),Mumbai,India

摘　　要：Nanowire-shaped α-Mo O3 was synthesized on a large scale by hydrothermal route.Nanocrystalline α-Mo2 C phase was obtained by the carburization of α-Mo O3 nanowires with urea as a carbon source precursor.The phase purity and crystalline size of the synthesized materials were ascertained by using powder X-ray diffraction.The shape and morphology of synthesized materials were characterized by field-emission scanning electron microscopy（FE-SEM） and high resolution transmission electron microscopy（HR-TEM）.The electrocatalytic activity of α-Mo2 C for I-/I3^-redox couple was investigated by the cyclic voltammetry.The synthesized α-Mo2 C was subsequently applied as counter electrode in dye-sensitized solar cells to replace the expensive platinum.Nanowire-shaped α-Mo O3 was synthesized on a large scale by hydrothermal route.Nanocrystalline α-Mo2 C phase was obtained by the carburization of α-Mo O3 nanowires with urea as a carbon source precursor.The phase purity and crystalline size of the synthesized materials were ascertained by using powder X-ray diffraction.The shape and morphology of synthesized materials were characterized by field-emission scanning electron microscopy（FE-SEM） and high resolution transmission electron microscopy（HR-TEM）.The electrocatalytic activity of α-Mo2 C for I-/I3^-redox couple was investigated by the cyclic voltammetry.The synthesized α-Mo2 C was subsequently applied as counter electrode in dye-sensitized solar cells to replace the expensive platinum.

关 键 词：Counter electrode Dye-sensitized solar cells Electrocatalytic activity Molybdenum carbide Molybdenum oxide 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TM914.4[电气工程—电力电子与电力传动]