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Published June 2, 2009 | public
Journal Article

Do Concentration Cells Store Charge in Water? Comment on Can Water Store Charge?


In a recent article, Ovchinnikova and Pollack (O&P)(1) reported that the persistent pH gradients (>100 min after electrolysis) generated upon charging a simple electrolytic cell (Pt electrodes in dilute aqueous NaCl solutions) imply that "water can store charge", in apparent violation of the principle of electroneutrality in bulk macroscopic fluid phases.

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© 2009 American Chemical Society. Received February 28, 2009. Publication Date (Web): April 21, 2009.

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