In-situ lithium battery electrochemistry in liquid cell TEM

Vasiliki Tileli’s group at École Polytechnique Fédérale de Lausanne (EPFL)  has used Hummingbird Scientific liquid cell TEM holder to demonstrate battery electrochemistry in liquid cell TEM using reference electrode deposited on the electrochemical chip. The work has been published in the prestigious Journal of the Electrochemical Society (JES)

Cyclic voltammetry (CV) of lithium iron phosphate (LFP) battery particles with lithium-gold alloy as real reference electrode (RE) in glovebox (solid black curve), TEM beam off (dashed blue curve) and TEM beam on (dotted red curve). © Copyright 2020 IOP Publishing

The researchers deposited lithium metal on the Au electrode to make an alloy of  LixAu  as a battery relevant reference electrode.  The method demonstrated here emphasizes the need for a better reference electrode for accurate and reliable electrochemistry.

Recently, Hummingbird Scientific launched a  bulk reference-based liquid cell electrochemistry holder. With our newest bulk electrochemistry holder, it is easy to incorporate any reference electrodes of choice by the user and record electrochemical data similar to what is observed in bulk-scale electrochemistry.

Reference: Jing Hou, Robin Girod, Nikolaos Nianias, Tzu-Hsien Shen, Jialiang Fan and Vasiliki Tileli. Lithium-Gold Reference Electrode for Potential Stability During In Situ Electron Microscopy Studies of Lithium-Ion Batteries. The Journal of Electrochemical Society (JES), 167, 11 (2020).  Full paper

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