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Citation: Liu Xiao-Ping, Lu Jun-Tao, Cha Quan-Xing. Diffusion Limiting Currents at Band-Band and Band-Plane Electrodes[J]. Acta Physico-Chimica Sinica, ;1993, 9(04): 528-532. doi: 10.3866/PKU.WHXB19930419 shu

Diffusion Limiting Currents at Band-Band and Band-Plane Electrodes

1.
Department of Chemistry, Wuhan University, Wuhan 430072

Received Date: 27 January 1992
Available Online: 15 August 1993

Expressions for diffusion limiting currents at a microband electrode paired with a planar electrode of conventional size and with another microband electrode are derived analytically by conformal mapping. It is shown that the diffusion limiting currents depend on the microband electrode width L and the interelectrode gap width d, and they can be expressed as the ratio of the two complete elliptic functions K((square root(1-k~2)~(1/2))) and K(k), where k=(1+2L/d)~(-1) for band electrode pairs and k=(1+L/d)~(-1/2) for the band electrode near a planar electrode of conventional size.
- Band-band electrode; Band-plane electrode; Stendy-state diffusion limiting current
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