Probing electrode/electrolyte interface during intercalation of Cu into Te

Electrochemically driven intercalation is among the most important processes for future energetic applications. However, real-time electrochemical characterization and control remain a challenge. Here we demonstrate how the intercalation can be characterized in-situ to provide a better understanding and control over the entire process and be used to synthesize some chalcogenide semiconductor thin films which are important for photovoltaic applications. Cu intercalation into Te is used as an example.

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► An approach for in-situ detailed characterization of intercalation processes.
► The use of different parameters: the electrode mass change, CDL, kinetic parameters.
► The developed approach provides a valuable insight into the Cu/Te system.