| 单词 |
potentiostat |
| 释义 |
potentiostat|pəˈtɛnʃɪəʊstæt|
[f. potential a. and n. + -o + -stat.]
A device used to regulate automatically the potential difference between electrodes in electrolysis.
1942A. Hickling in Trans. Faraday Soc. XXXVIII. 27 The electrical circuit of the device, which will subsequently be referred to as a ‘potentiostat’, is shown in Fig. 1. 1949Analytical Chem. XXI. 497/1 The instrument{ddd}functions as a potentiostat in automatically maintaining the potential of a working electrode constant during an electrolysis. 1965New Scientist 8 Apr. 99/1 These potentiostats..have a very rapid response to voltage fluctuations and now make the continuous control of commercial processes look very attractive. 1979Nature 15 Mar. 239/1 The cinnabar electrode is connected to a platinum counter electrode and a potential of 0 V maintained between the two by means of a potentiostat.
Hence potentioˈstatic a., under the control of or employing a potentiostat; with the potential difference between electrodes held constant; potentioˈstatically adv.
1955Chem. Abstr. XLIX. 5166 The potentiostatic method was compared with other methods. 1961Trans. Symposium Electrode Processes (U.S. Electrochem. Soc.) 164 An attempt was made to develop apparatus in which potentiostatic conditions could be achieved in a time short enough to study the growth and decay of metal monolayers at constant potential. 1967tr. K. J. Vetter's Electrochem. Kinetics (Theoret. Aspects) ii. 364 The potentiostatically applied overvoltage must..be pure charge-transfer overvoltage at time t = 0. 1975Nature 27 Mar. 322/2 Specimens held under potentiostatic control in the electrolyte were subjected to square wave strains in the range {pm}0·02 to {pm}0·05 at strain rates of ∼0·30 s-1. 1976Ibid. 19 Aug. 681/1 Anodisation could be accomplished both galvanostatically and potentiostatically. |
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