Effect of methanol on the electrochemical behaviour and surface conductivity of niobium carbide-modified stainless steel for DMFC bipolar plate
Effect of methanol on the electrochemical behaviour and surface conductivity of niobium carbide-modified stainless steel for DMFC bipolar plate
复制标题
甲醇对DMFC双极板用碳化铌改性不锈钢电化学行为和表面电导率的影响
DOI:
10.1016/j.ijhydene.2016.07.037
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发表时间:
2016-09
影响因子:
7.2
通讯作者:
Sun Juncai
中科院分区:
文献类型:
--
作者:
Wang Lixia;Gao Haili;Fang Hua;Wang Shiwen;Sun Juncai
The electrochemical behaviour and surface conductivity of niobium carbide modified-304 stainless steel (Nb-C 304 SS) bipolar plate in simulated cathode (0.5 M H2SO4+ 2 ppm HF + 0.1 M methanol solution at 50 °C, bubbled with air) and varied anode (0.5 M H2SO4+ 2 ppm HF + x M methanol (x = 1, 5, 10 and 20) solution at 50 °C) DMFC environments are systematically investigated. The results of potentiodynamic and potentiostatic polarisation tests show that corrosion resistance of 304 SS is greatly improved by the niobium carbide diffusion layer. Moreover, the Nb-C 304 SS shows an enhanced corrosion resistance in higher methanol content solution. According to the analyses of Mott–Schottky and X-ray photoelectron spectroscopy, although semi-conductive passive film forms on Nb-C 304 SS after potentiostatic polarisation in all the test solutions, the surface conductivity is still high. In addition, the thickness of passive film is thinner in the higher methanol content solution, which is beneficial for decreasing the interfacial contact resistance.
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影响因子:
9.2
作者:
Li, Song;Ji, Shijun;Wen, Zhongsheng;Wang, Xiaochun
通讯作者:
Wang, Xiaochun
影响因子:
8.3
作者:
C. Brossia;E. Gileadi;R. Kelly
通讯作者:
C. Brossia;E. Gileadi;R. Kelly
影响因子:
9.2
作者:
Gao, Na;Du, Xiao;Jia, Linan;Sun, Juncai
通讯作者:
Sun, Juncai
影响因子:
8.3
作者:
M. Sakakibara;N. Saito;H. Nishihara;K. Aramaki
通讯作者:
M. Sakakibara;N. Saito;H. Nishihara;K. Aramaki
DOI:
10.1016/j.ijhydene.2011.07.045
发表时间:
2011-10
期刊:
Fuel and Energy Abstracts
影响因子:
--
作者:
Heli Wang;J. Turner
通讯作者:
Heli Wang;J. Turner