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File:Number of patent families and of journal articles related to several electrochemical power sources by year.png

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Captions

The number (log Y scale on the left) of patent families (solid lines) and of journal articles (dotted lines) related to several electrochemical power sources vs the earliest priority (for patents) or publication (for journals) year.

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Description
English: The number (log Y scale on the left) of patent families (solid lines) and of journal articles (dotted lines) related to fuel cells (magenta), lithium (metal and ion) batteries (green), vanadium redox flow batteries (blue) and zinc-halogen batteries (red) vs the earliest priority (for patents) or publication (for journals) year. Also shown as the black line is the inflation-adjusted oil-price (right Y axis).
Date
Source Own work
Author Walter Tau

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current15:13, 10 September 2022Thumbnail for version as of 15:13, 10 September 20221,269 × 744 (70 KB)Walter Tau (talk | contribs)Uploaded own work with UploadWizard

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