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請教做循環(huán)伏安的時候,旋轉(zhuǎn)圓盤電極的轉(zhuǎn)速是多少?
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請教做循環(huán)伏安的時候,旋轉(zhuǎn)圓盤電極的轉(zhuǎn)速是多少? 背景:我用普通的三電極法,沒用旋轉(zhuǎn)圓盤電極,測試H2SO4溶液中的循環(huán)伏安(CV),線性掃描(LSV)和Tafel,審稿人說我這些測是靜態(tài)的,不夠合理。 于是老板建議我用旋轉(zhuǎn)圓盤電極(RDE)重新測試,請問:用RDE測CV、LSV和Tafel的時候,轉(zhuǎn)速一般分別是多少?? 以下是審稿人問題:It is extremely difficult to measure any kinetic overpotential for the H2 evolution reaction in acidic electrolyte on a Pt electrode. Certainly it cannot be done with a stationary porous electrode. The polarization that one observes is enitrely mass transfer and/or ohmic resistance. To be sure there are effects of the structure of the Pt electrode, but there are no true catalytic (kinetic) effects that be separated out from the observed polarization. This is a journal of catalysis. There is no catalytic result here. [ Last edited by 597509989 on 2012-4-2 at 10:04 ] |
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