Electrochemical studies of carbon films from pyrolyzed photoresist

被引:108
作者
Kim, J [1 ]
Song, X
Kinoshita, K
Madou, M
White, B
机构
[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley Sensor & Actuator Ctr, Berkeley, CA 94720 USA
关键词
D O I
10.1149/1.1838636
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Carbon film electrodes were prepared by pyrolysis of photoresists on silicon-wafers at temperatures ranging from 600 to 1100 degrees C. The physical properties of the carbon films were characterized by scanning and transmission electron microscopies, thermal gravimetric analysis, and four-point probe electrical resistivity measurements. The electrochemical properties of the carbon films were investigated by cyclic voltammetry to observe the kinetics of the Fe(CN)(6)(4-)/Fe(CN)(6)(3-) redox couple. The carbon film electrodes prepared at temperatures greater than or equal to 700 degrees C showed electrochemical behavior Similar to that of glassy carbon. Better electrocatalytic behavior was obtained with carbon films prepared at the higher pyrolysis temperatures which is attributed to different film compositions at different pyrolysis temperatures. The electrochemical properties of the:carbon film electrodes are very stable, exhibiting reproducible behavior even after storing at room temperature in air for 3 months.
引用
收藏
页码:2314 / 2319
页数:6
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